brand-new specs and prices on 1,200 speakers buying … · sentially, you have five ways you can...

BRAND-NEW SPECS AND PRICES ON 1,200 SPEAKERS

HIGH FIDELITY'S

Buying Guide tort,Speaker Systems.linN gSTEPS" AMAZING

SOUNDPLUSCAR STEREOSPECIAL

5 Ways to UpgradeYour Car Speakers

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$1.95IC D 08402

EXPERTS REVEALI. How to Select the Top Speaker

2. Which Design Performs Best

3. What Component Can Improvethe Sound of Any Speaker

See and Hear AAL at the following Authorized Dealers:AlabamaEufaulaHeritage Sound

MontgomerySouthern Sounds

SheffieldPowell Electronics

ArkansasCrossettMusic Mart Corp

El DoradoMusic Mart Corp

MagnoliaMusic Mart Corp.

RussellvilleRed Apple H E C

ArizonaPhoenixHasslers Home Enter. Ctr.

CalifprniaSanta BarbaraCreative Stereo

Santa ClaraLafayette Radio

San DiegoAudio Engineering Service

Studio CityJeanne Emmons Stereo

WhittierHi Fi Haven

ColoradoColorado SpringsCrystals

D.C.Washington

Burg MusicDouglas StereoRoyces TV

FloridaCoral Gables

Brand Electronics

Ft. LauderdaleBrand ElectronicsNelron Communications

GainesvilleAudio Innovators

JacksonvilleBranc Electronics

MiamiBrand Electronics

N. Miami BeachBranc Electronics

OrlandoBrand Electronics

GeorgiaAtlantaWest Side Audio

BrunswickThe Audio Specialist

ColumbusAudio Clinic

HawaiiHonoluluAmerican Electronic IndustThe Audio Center Ltd.

IllinoisAntiochSound Advice

BerwynAlan Radio (KBTV)

CarbondaleKemper Dodd

CarpentervilleCentury Electronics

ChampaignAppletree Stereo Inc

ChicagoAlan RadioGallery BaffayetteMidwest Stereo ImportsMusicraft, IncOlson ElectronicsShaw Bros

DarienKBTV

DecaturAppletree Stereo. Inc

DeKalbAppletree Stereo, Inc

ElginAppletree Stereo. Inc

ElmhurstPlass Appliance

Evergreen ParkMusicraft. Inc.

HomewoodMusicraft, Inc

JolietStereo Studio Ltd.

LombardMusicraft, Inc

Morton GroveMusicraft. IncOlson Electronics

NapervilleAppletree Stereo, Inc

NormalAppletree Stereo, Inc

NorthbrookAlan RadioSound Experience

Oak ParkMusicraft. Inc

Orland ParkHot Licks Music

PalatineAuto Sound

PeoriaAppletree Stereo, Inc

RidottLafayette Associates

RockfordAppletree Stereo. Inc

SchaumburgAlan Radio

SkokieAuto Sound

SpringfieldAppletree Stereo. Inc

Vernon HillsAlan Radio

WaukeganAlan Radio

WestmontSounds DeLuxe. Inc.

WheelingSound Experience

WoodstockSound Advice

IndianaAndersonAnderson Electronics. Inc

AngolaOnly Hi Fi

EvansvilleRisley ElectronicsTed Fink Audio -Visual

Ft. WayneAudio CityClassic Stereo -Pak, Inc

GaryKemps TV

IndianapolisHi Fi Buys

LafayettePro Audio

KokomoAudio House

MuncieHi Fi Buys

New HavenHJS Sound Equipment. Inc.

South BendWolfies (WOLCOI

Terra HauteHoosier ElectronicsRisley Electronics

WabashNickelodeon Records 8. Tapes

WinamacOne Stop Electronics

IowaAudubonBruce's Electronics

BelmondHome Electronics

CentervilleUniversal Sound

DavenportSound Depot

Des MoinesStogdills Inc

FairfieldUniversal Sound

Fort DodgeSound World

KansasHutchinsonMayfield Music

MissionAccent Sound

WichitaNichols Electronics

KentuckyLouisvilleHi Fi Buys

PaducahRisley Electronics

RadcliffAudio Connection

RichmondThe General Store

SomersetCircuits and Sound Elec

LouisianaBakerMusic Gallery

KennerSound Trek AudioScandia Sound Systems-Sound Trek

LafayetteLafayette Light & Sound Inc

RustonMusic Mart Corp.

MassachusettsBurlingtonEardrum

CambridgeEardrum

ClintonAppliance Center

WoburnLec.hmer?. Sales Co

MarylandBaltimoreMetro Broker Ltd

RockvilleSound Dynamic

MaineWestbrookThe Sound Cellar

AugustaFrank Pormerleau

MichiganBattle CreekMiller Jewelers

DetroitOlson Electronics

FlintTV Engineers

Grand HavenTr' City Sound

HastingsMusic Center

Mt. ClemensOlson Electronics

NewaygoPauls Party Store

PetoskeyPuffs Home Center

South HavenLewis Electronics

Spring LakeMill Point Appliance

St. JosephSound Advice

SturgisKent Sound Chamber

MinnesotaFergus Falls

Leyquist Sound Idea

From disco studiosto studio apartments,American Acoustics Labsdelivers incredible sound.Everybody talks about speaker soundquality. But the proof is in hearingwhat professionals, whose livingdepends on a sound delivery system,use all night long, all week long atfull power

This eight foothigh stack ofAAL ProfessionalDisco speakersis as powerfulas it looks.

AAL makes 5 complete lines ofspeakers for home and professionaluse. They're all made in our factoryby people who take great pride intheir craftsmanship. Every speaker

HopkinsSound Depot

MarshallSound Wave

MissouriCape GirardeauKemper Dodd

HazelwoodTipton

KansasBrands Mart Midwest

MexicoMexico TV 8 Stereo Center

MoberlyJohnson Electric/Radio Shack

SpringfieldStereo Buff

MississippiMeridianHooper Electronic Supply

MontanaBillingsSound Pro

NebraskaOmahaSol Lewis Co

North CarolinaChapel Hill

Woofer & TweeterHi Fi Systems

DurhamWoofer & Tweeter

Hi Fi SystemsFayetteville

AAA Rental & RepairStereo World

GreensboroEd Kelly's Sound Gallery

High PointEd Kelly's Sound Gallery

JacksonvilleStereo WorldFurniture Fair

MadisonMadison Electronics

Moorehead CityRainbow Records

Mt. AiryBrannock Electronics

Winston SalemEd Kelly's Sound Gallery

New HampshireExeterCharles J Haley Inc.

ManchesterTreisman's Sound GalleryManchester Music

NashuaTreisman's Sound Gallery

PortsmouthSound Smith

SalemTreisman's Sound Gallery

NevadaLas VegasThe Upper Ear

RenoThe Tin Ear Sound Company

New YorkBrooklynHeavy Custom Sound

IthacaStellar Stereo

Long IslandSound Spectrum Ltd.

MonticelloDiscount Sound

New YorkAudio SalonNSB Corp

UticaTomar Electronics

Williston ParkSound Spectrum Ltd.

OhioAshtabulaJ.B. Dahlkemper Co Inc

passes numerous quality controlchecks and receives a full five yearlimited warranty.

AAL's popular Classic Series.Shown with the grills removed.

Our cabinets are rugged anddurable, with a clean, stylish designto go with any decor.Our speakers perform to the state ofthe art to produce sound of extraor-dinary clarity, presence, and realism.You can read the specificationselsewhere in this book.

AkronOlson Electronics

AthensPaul & Tony's Stereo Whse.

CelinaBob's Radio & TV

ChillcotheMadden TV & Radio

CoshoctonJ W S Hi Fi

DaytonClarkston AudioJ 8 B Sales

EastlakeTokyo -Shapiro

LancasterRadio Shack/Merco

LimaHart Audio

MansfieldServes Elec. Drst , Inc.

MarionServes Elec. Dist Inc

MassillonAffiliated Audio Eng.Stereo Shoppe

MentorMentor TV & Audio

MinsterGudorf & Sons

NewarkThreshold Au= Emporium

NorwalkFisher Music

PortsmouthMadden TV 8 Radio. Inc

SanduskyServes Elec. Dist. Inc

WarrenCustom Sound

WheelerburgWilliams Wheelersburg TV

& ApplWoosterServes Elec. Dist Inc

VermilionErie Electronics

YoungstownCustom Sound

OklahomaOklahoma CityCentury Records

PennsylvaniaAllison ParkAppliance World

BrentwoodPittsburgh Stereo

ChambersburgSunrise Electronics

ClearfieldRossetti TV

ErieJ B Dahlkemper Co Inc

GilbertspilleTri County Audio

°remove! eWilson Appliances Inc

JohnstonBetter Sound

LatrobeSoundtown

MeadvilleFlicks TV Electronic SalesJ B Dahlkemper Co.. Inc

MonroevillePittsburgh Stereo

Natrona HeightsGood Housekeeping Appl

N. VersaillesPittsbuigh Stereo

PhiladelphiaRadio 437 Store. Inc

PittsburghOlson ElectronicsPittsburgh Stereo

ScrantonSound Advice

SharonWilson Appliances Inc

WexfordJ B Dahlkemper Co.. Inc

Wilkes BarreGeneral Radio

Willow GroveSoundex Electronics

WyomissingJetco

Now we suggest you give AALspeakers the ultimate test:HOW THEY SOUND TO YOU.Let an authorized AAL dealer giveyou a comparison test. Whether youhave a disco studio or a studio apart-ment or anything in between,AAL DELIVERS.

See your authorized AAL Dealeror write:American Acoustics Labs629 W. Cermak Rd.Chicago, IL60616

Rhode IslandNewportS Adelson Co. Inc

South CarolinaSpartanburgAt.tho Master

South DakotaBrcokingsStereotown of Brookings

MitchellStereotown of Mitchell

Sioux FallsStereotown of Sioux Falls

VermillionStereotown of Vermillion

TennesseeClarksvilleStereo World

Nashvillebays Electronics

TexasBrownsvilleEspinoza Electronic Supp

DallasTexas Hi Fi Inc.World Wide Stereo

GarlandWorld Wide Stereo

KillenStereo World

Son AntonioRoger Williams Custom

SoundVirginiaFairfax

Atlantic Export Int.RoanokeAudiotronics

SmithfieldHall Electronics-

Music Land Div%irginia BeachLafayette Radio

VermontSpringfieldBill's Sight 8 Sound

WisconsinAppletonSound World

BeloitBell Electronics

Green BaySound World

JanesvilleBell Electronics

MadisonAmerican TV of Madison

ManitowocTeam Electronics

MaustonRadio Shack

RacineSound Gallery

SheboyganSound World

West AllisOlson Electronics

West VirginiaHuntington

y Summertield SoundMorgantownStereo Center

WyomingRock SpringsAudio World

CanadaEdmonton Alberta

United Light and SoundGrand Prairie AlbertaAudio Video Research

SaskatoonHarmony Center

Toronto OntarioScotty's Stereo Ltd

InternationalNew YorkRoburn Agency IncTelex 235-754

w1A 79

CIRCLE 3 ON READER-SERVICE CARD

Bought expensive speakers?

Better not listen to ours!However, if you're looking for incredible sounding speakers

at an affordable price, by all means do! You will find that for less money than youplanned on spending you can get much better sounding speaiers than you dreamed you could ever afford.Polk Audio loudspeakers have received worldwide praise because people recognize that they offerremarkable value. Critical acclaim such as the following makes it clear why Polk speakershave become famous for offering the best possible sound for the money.

"Polk Audio is a small, Maryland -based company whose speakers enjoy anenviable reputation among audiophiles who would prefer to own such exoticaas the Beveridge System 2SW-1 ($7000 per pair) or Pyramid Metronome($5200 per pair) but don't have the golden wallets to match theirgolden ears!" The Complete Buyer's Guide to Stereo/Hi-Fi Equipment

"Audio experts know that the price of a speaker is not alwaysdirectly proportional to its quality. Nowhere at CES was that factmore dramatically demonstrated than in room 900 of the Pick Congresswhere the folks from Polk Audio of Baltimore were demonstratingtheir speaker line..."High Fidelity Trade News

"They (Polk 10's) are a high definition speaker system deservingthe very best associated electronics. And at their price, theyare simply a steal!"Audio Advisor-Audiogram

Monitor 5 Monitor 7 Monitor 10

Polk Audio loudspeakers. starting around $125 each, are available at the worlds finest hi-fi stores. Writeus for complete information on our products and the location of the Polk Audio dealer nearest you.

Monitor Series LoudspeakersPolk Audio Inc. 1205 S. Carey St., Baltimore, Md. 21230 Dept. B11Distributed in Canada by Edon Acoustics - Ottawa INCREDIBLE SOUND- AFFORDABLE PRICE

Real -Time Array 12Reference Monitor System

CIRCLE 28 ON READER -SERVICE CARD

HIGH FIDELITY'S

Buying Guide toSpeaker Systems

-1980 Edition

EditorialYou Can't Hear the Forest for the Trees 5

Glossary of Speaker Terminology 92

Pick the Speakerthat Suits You Bestby Bennett EvansDiscovering what to listen for and what to listen to are keyelements in buying speakers intelligently. But first there is aprocess of elimination, ruling out those models that obviouslyare unsuited for you, either because of size or cost. Learntime -tested tips that can give you the best speakers yourmoney can buy.

Is One Design Superior?by Edward J. FosterOnce you've begun looking for speakers, you'll discover thatthey come in a number of different designs; infinite baffle,acoustic suspension, bass reflex, vented, horn -loaded, andelectrostatic are the most common, as well as the new minisand subwoofers. Does one approach offer clear advantagesover all the rest? Our answer may surprise you.

6

93

The Most Critical Component 20by Alan FieldingMany people overlook an important link in the audio chain.They spend hundreds, perhaps thousands, of dollars to ob-tain the least distorted, flattest frequency response possiblefrom their stereo rigs, but forget that electronics no longerplay a part once the sound has entered the critical compo-nent-the listening room. How well you "tune" that room willdetermine the sound quality of your entire stereo system.

Good -bye Squawk -Box Speaker! 110by Robert AngusIf the music from your present car speaker leaves y,)u ascold as last night's leftovers, it may be time to replace thatspeaker with one of the hundreds of new car stereo units. Es-sentially, you have five ways you can upgrade your speakers.Read which approach is best for your specific car.

Buying Guide tomore than 1,200Home andCar SpeakersHere it is. The buying guideyou've been waiting for. Manu-facturers' specs on more than1,200 speakers, all in one placeand all in an easy -to -read formatthat allows you to easily comparesuch specs as design, frequencyresponse, minimum and max-imum power requirements, im-pedance, controls, size, and, ofc-ourse, price. Car speaker list-ings include recommendedmounting location(s).

HomeSpeaker Systems 36

CarStereo Speakers 81

Ohm'sLaw 9It is possible to make a loudspeakerthat gets loud and still sounds good.

Ohm introducesanother new loudspeakerthat defies the traditionallaws of loudspeaker design.The new Ohm I.

It used to be, if youliked listening to music asloud as life in your home, youhad a tough choice to make.You could buy high efficien-cy "monster" systems, andput up with the boom andshriek. If you wantedsomething smoother (withrealty deep bass), you couldbuy low efficiency systems,but then you'd need anamplifier big enough topower Toledo.

The Ohm I solvesthe problem. It can achieve

concert hall levels inyour home effortlessly,with no sacrifice in band-width, linearity, or imagingabilities. While the Ohm Igets amazingly loud withas little as 10 watts input,it can handle 1000 wattscomfortably.

It's the world's firstgood and loud loudspeaker.

Inside the Ohm I, you'llfind everything we'velearned about multi -driverdynamic loudspeaker de-sign. It uses a total of fivedrivers, including a 12 -inch,optimally -vented subwooferwith an incredible 72 ounce

magnet. Voice coils arecooled by magnetic fluid toincrease power handling.The Ohm I's beautifully -finished, floor -standingenclosure is compactenough to fit gracefully intoany home.

The new Ohm I's arealready earning rave re-views from stereo critics.After listening to them, The

OM,

Complete Buyer's Guideto Stereo/Hifi Equipmentsays, "The volume levelwas approaching thethreshold of pain, but thespeakers were showing nosign of strain. The response,regardless of level, wassmooth and free fromannoying colorations...Toooften a loud loudspeaker isdeficient in many otherareas. Fortunately, this isnot the case with theOhm I...."

According to HifiStereo Buyer's Guide(8/79), the new Ohm I has"...a combination of effi-ciency and power handlingthat, as far as we know,is unmatched." They con-tinue: "(The Ohm I) is one ofthe finest speakers we'veever heard. There is nothingit couldn't do and do itsuperbly...it thundered outthe lowest pipe -organpedal notes in a way thatmade us feel we were in agreat cathedral...Whenappropriate, the bass was

discreet. It was all there,without saying 'Here I am'....The treble filled the roomwith a spacious sweetnessthat seemed...downrightseductive...(The Ohm I) willbring out the best from anyprogram material and willalso do justice to the comingglories of digital recording...this is a speaker with afuture - for the future."

For a listening exper-ience you've never enjoyedbefore except at a live per-formance, visit your localOhm dealer. Ask to hearthe world's first good andloud loudspeaker: the newOhm I.

For 16 complete reviews,and full specifications,please write us at: OhmAcoustics Corp., 241 TaaffePlace, Brooklyn, N.Y. 11205.

We make loudspeakerscorrectly.


Editorial

You Can't Hear the Forest for the Trees

So many different models of speakers are available today that youcould literally compare them at the rate of 10 per day and not befinished for more than 4 months-when another several hundrednew models would probably be available. There must be a betterway to choose a speaker.

There is: It takes time and planning, but not necessarily thatmuch money. An important factor is knowing what to listen for andwhat to listen to. Essentially it's a learning process that requiresyou to audition a number of speaker systems under specific condi-tions. Bennett Evans, in "Pick the Speaker that Suits You Bes,-.,"draws on his extensive experience in audio to point out time -testedways to sort the wheat from the chaff.

Besides choosing from hundreds of models, you're also facedwith selecting among many designs. Each is said to have its partic-ular advantages. In "Is One Design Superior?," Edward J. Foster,head of Diversified Science Laboratories, details the pros and consof eight of the most popular speaker system designs. As you'll dis-cover, each design tries to accomplish something the others don't,but the ultimate speaker has yet to be designed.

Speakers that sound good at the audio salon sometimes are lessexciting once you've placed them in your listening room. Often it'sbecause a critical component in the audio chain-the listeningroom-has been overlooked. For example, the room may not havethe flat frequency response it should. How you can optimize theperformance of any speaker system by altering room acoustics iscovered by Alan Fielding in "The Most Critica! Component."

More and more speakers are being designed specifically for in-stallation in cars and vans, and the increasing choice is bewilder-ing. If you're planning to replace the factory -installed speaker inyour car or to upgrade your current car system, you'll find timelyadvice in Robert Angus' "Good-bye Squawk -Box Speaker!"

To give you a headstart on finding out what's available in bothhome and car stereo speakers, we've included an extensive buyingguide section that lists more than 1,200 speakers. Complete specsand prices are given on most of them, and all information ispresented in an easy -to -read format that makes comparing models(in terms of manufacturers' specs) a breeze.

Overall, our 5th annual edition of HIGH FIDELITY'S BUYINGGUIDE TO SPEAKER SYSTEMS offers a compact and comprehensivereference guide that can save you time and money when you'reshopping for speakers. -WT

BRAND -9 EW SPECS AND PRICES ON 1,200 SPEAKERS

HIGH FIDELITY'S

Buying Guide to=Speaker Systems.SIMPLE STEPSTO 7tti

s, -

Now to Select Me lop Speaker

Wpm Casten Performs Best

What Cormorant Can Improvethe Sound of Any Speaker

Cover ecuipment (clockwise from left) C C L ModularAcoustic.: 3200 speaker. Epicure 3.0 speaker. Wharfe-dale E-90 speaker. ESTranslator 310 speaker: T ho -lens HP -:.60 speaker. Belles Model 1 speaker, 3A Tripho-nic subwoofer: on subwoofer. clockwise from left AvidModel Ten car stereo speaker. Mitsubishi SX-30SA carstereo speaker. Visonik AS -1 car stereo subwoofer

Cover photo Robert CurtisCover design Bob Maddocks

William Tynan Editor

Robed S. Clark Editorial Director

Edlli Carter Senior Editor

Cyrthia Pease Associate Editor

Edward J. Foster Consulting Editor

Marion Thompson Assistant to the Editor

Bob Maddocks Director of Graphics

Kathleen Davis Production Editor

Lynne Wesolowski Editorial Assistant

David Lee Circulation Director

Lecnard Levine Associate Publisher

Wa-ren B. Syer Publisher

Published at Great Barrington. Mass 01230 Copyright 1979 byABC Leis.. re Magazines. Inc , a subsidiary of American BroadcastingCompanias Inc 1330 Avenue of the Americas. New York. N10019 Warren B Syer, President Herbert Keppler Senior VicePresident. Photographic Publishing Division. Leonard Levine. VicePresident. Advertising, Warren Tuohy. Vice President. Finance. Da-vid Lee. Circulation Director. Cathleen Alois. Personnel Director.Wayne Asmentrotd. Director of Manufacturing The design and con-tents of this publication are fully protected by Copyright and must notbe reproduced in any manner Information for the equipment direc-tory was .upplied by the manufacturers

AdvertisiagMain 011ie: The Publishing House. Great Barrington. Mass 01230Telephone 413-528-1300 Robert J Ur Sr , Sr . Director of Advertis-ing SalesNew York: ABC Leisure Magazines. Inc 825 7th Ave , 6th floor. NewYork. N trr 10019 Telephone 212-265-8360 Seymour Resnick. Na-tional Advertising Manager. George Dickey. Record AdvertisingManager Ruth Elliott. Eastern Advertising Manager. Janet L Cer-met,. Administrative Assistant. Vette Penman. Classified Advertis-ing DepartmentMidwest: ABC Leisure Magazines Inc 190 N State St Room 632.Chicago. III 60601 Telephone 312-782-1173 William P GordonMidwest Advertising Manager. Osbert Bruno. Advertising Represen-tativeLos ',males: ABC Leisure Magazines, Inc 2020 Avenue of theStars. Suite 245 Century city. Calif 90067 Telephone 213-553-2000 Andrew Spanberger. Western Advertising Manager, Janet E n-dnionas. Associate Western Advertising ManagerTokyo: Japan Advertising Communications, Inc . New Ginza Bldg7-3-13 Ginza. Cnuo-ku Tokyo 104. Japan Telephone (03) 571-8748 Sh geru Kobayashi. President

1980 Edition 5

Pick the Speakerthat Suits You Best

NI&by Bennett Evans

Discover what to listen for . . .

and what to listen to

You can do a pretty good job of comparing amplifiers, tape decks, tuners,and other components on the basis of their spec sheets. You can't do thatwith speakers. The only way to buy speakers intelligently is to listen tothem. And that doesn't mean just listening casually; it means learning tolisten analytically, learning what to listen for and what to listen to.

Before heading for the showrooms, you can do some homework thatwill save you time and listening fatigue. Begin by narrowing down yourlist of prospects. More than 1,200 different speaker models are available,almost a quarter of which have been introduced during the past sixmonths. Use this process of elimination to lop off unsuitable speakersfrom your list.

Speakers that won't fit your room are obviously unsuitable. Studyyour listening room. Are there any other locations where the speakersmight be placed other than the spot where your present speakers are?Spec sheets are useful for determining the dimensions of various speakers.A speaker that won't squeeze into that space between the doorway andthe built-in bookcase, or that won't fit on the only shelf that's suitable,should be dismissed, no matter how good it may sound.

Size isn't the only hurdle you'll confront. Placement can be equallytroublesome. I couldn't use a Klipschorn, for example, because it requiresa straight, 90 -degree corner, and the corners of my room all have arch-ways or pillars in them. I couldn't use AR -9s, because my left -channelspeaker has to sit between two record cabinets, which would block theAR -9's side -mounted woofers. I couldn't use Bose 901s, because theymust sit out from the wall, and in my house that placement would ob-struct the main flow of traffic to or from the living room.

Your household's habits may eliminate some speakers too; for ex-ample, I couldn't use Linn Isobariks, because they have topfiring tweet-ers-and I know that sooner or later (probably sooner), I'd lay a stack ofpapers on top of the speaker cabinet, muffling their sound. You, for ex-ample, might have to use bookshelf speakers because your cats scratch upthe grilles of floor -models, or be forced into floor -mounting speakers be-cause your library has already usurped all the bookshelves.

How much you plan to spend will also eliminate a lot of speakers from

6 High Fidelity's Buying Guide to Speaker Systems

Why do so many stars and stu-dios use JBLs? And more dis-cos* than any other speaker?Accuracy is theanswer. Themusic as per- =f.'formed. That'sthe sound thepros insist on.No wonder 7 ofthe 10 top al-bums in 1978

to match the music as payed.Clear and lifelike.

We can state this withsome pride since :vecreate our speakersfrom the ground up.Concept, des:gm indi-vidual component --all are created at cur

5 1100 200 5,0 IF 2F 5K I' K2OK plat!t and testedbrow no, .11z against stringent en -

On -axis frequet cy .r.stionse. gineering speciS-were recorded, L212 sy.

mixed or mastered on JBLs!*And that's the sound we

demand in every ,thissitithisisib,speaker in ourline. JBL speak-

-ers are desigred

ten. cations. Rigorousquality control is applied everystep of the way.

We could gc intomore technical detail

'Billboard Disco Survey, 19.8."Recording Institute of America Survey.


but we want to keep our mes-sage short and sweet. Thereason so many stars, studiosand professional installationsprefer our speakers isJBL ac-curacy. Their living depends onhow good they sound. So if youquestion your own ears, trusttheirs.

James 3. Lansing Sound,inc., 8500 Balboa Boulevard,Northri:_:ge, CA91329.

FEISTWITH THE

PROS.

The Bose 901 - past, present, future.Past The first Bose 901 Direct/Reflecting* speaker was introduced in 1968. It was the result of

research started twelve years before at M I T under the direction of Dr. Bose. This speaker introducedthe fundamental advances of a balance of ref E cted and direct sound, nine matched, full -range

speakers, active equalization and uniform powe- response - all very controversial concepts at thetime. But the performance produced by this new technology soon earned for the 901 speaker its

international reputation as the most highly reviewed loudspeaker regardless of size or price.

Present The founders of Bose, all from the fied of science, decided that Bose would reinvest100% of its profits back into the company to maintain the research that was responsible for the birth

of the 901 loudspeaker. The unprecedented success of the Bose* 901 in world markets, coupled withthis 100% reinvestment policy, has created w -at we believe is by far the best research team

in the industry. This team has made over 300 design improvements in the 901 speaker since itsintroduction - including such basic developments as the Acoustic MatrixTM Enclosure (illustrated), the

helical, low impedance voice coil and the advaiced full -range precision drivers. And the newconcept of controlling the spatial properties of tie 901 speaker has just been introduced via the

unique Bose Spatial Control"' Receiver.

Future At Bose we have decided that "901" will continue to be the designation of the productthat represents the state-of-the-art of our technolDgy - whatever size, shape or form that product

may take. In our research we continue to look at any and all technologies and product concepts thatmight hold possibilities for better sound reproduction. Consistent with the past, we will introduce new

technology into the 901 speaker as it is developed - often without announcement. This is ourdedication to the goal that whenever you invest in the Bose* 901 system you will receive the latest*

technology and the best in music reproduction.

Covered bs, patent r9hts issued and bend,nd

_1717-4-E'Better sound through research

the list: not just those you can't afford, but those that are so far belowyour price range that they're unlikely to be worthy of notice. Speaker val-ues can vary surprisingly, though, so don't be rigid about the cutoffpoints. Speakers listing for as little as 60% of your maximum price arelikely to satisfy you. If everyone is raving about some speaker selling foreven less, listen to it too. At worst, you'll waste a few minutes. At best,you'll save a few hundred dollars.

Speakers nominally priced a bit above your range may be affordable ifdiscounts are available in your area. (In any county big enough to sup-port two or three audio dealers, you're bound to find at least one shopthat will give you a discount.) So if your limit is $300, don't automaticallyscratch $350 speakers from your list.

Test reports can prove a useful guide, but only that. They can't substi-tute for what you hear yourself. They can make you a more astute lis-tener, however. Reviewers listen to endless speakers and have a vocabu-lary to describe what they hear. Find reviews of models that are carriedby your local dealer and compare what he has heard with what you hear.Do this a few times for any given review source (HIGH FIDELITY'S TESTREPORTS, for example) and learn to correlate the descriptions with theway the speaker will sound to you. (The reviews will also tell you usefuldetails not found on spec sheets: optimum placement, etc.)

Listening analytically will become second nature and eventua_ly youwill understand what a reviewer means when he says that a speaker has"a forwardness and exciting sense of immediacy," or has "some indicationof low -frequency resonance ... that added a roundness." Once you'veheard what's being described, the audio vocabulary loses its mystery.

A manufacturer's specs will often be useful in comparing performancebetween speakers in his line, but not so useful comparing performancewith speakers built by a competitor. Even within one manufacturer's linethere may be inconsistencies. A reputable maker won't exaggerate thespecs of his most expensive speaker, but he may shave the specs of hislower -priced models to exaggerate the difference between the top andbottom of his line. For example, the high -end response from a giventweeter may be shown as lower when it's in the least expensive systemthan when it's in the flagship model.

A given reviewer's measurements will yield meaningful comparisonsbetween different speaker makes-but comparisons with other speakers,tested by a different magazine, will not be meaningful.

Two other factors to consider prior to listening tests are sensitivity (orefficiency) and appearance.

How a speaker looks won't affect its sound. But since speakers are prob-ably the most visible component of a stereo system, you should avoid onethat sounds good but doesn't appeal to you visually.

Sensitivity is usually given as output in decibels of sound -pressure level(dB SPL) for 1 watt of input, measured at a distance of I meter. Theoret-ically, a speaker with a sensitivity of 97 dB will need only half the ampli-fier power of one with a 94 dB sensitivity to produce the same sound level.(To put it another way, an increase of 3 dB-raising 94 dB to 97 dB-would require double the power.) In practice, it's less clear-cut. Thesemeasurements are usually made with a 1 kHz sine -wave signal; thosetaken over a period of time with a musical signal might differ, as wouldany measurements made with broad -band pink noise. But it's safe to as-sume that a 97 dB speaker requires somewhat less power than a 94 dBone. And the bigger the difference, the more significant it becomes inpractice.

Sensitivity is an indirect guide to a speaker's power requirement. Moredirect are the speaker's amplifier power spec, and its rated maximum

Test reports

can prove

a useful guide,

but only that.

1880 Edition 9

41,r.

*-4g4t 4

First ChairThat's the Jensen Separates car stereo

speaker system.That's the thrill of being there.

First Chair. What better way to describethe Jensen Separates?

The finest, most accomplished carspeaker system to date. With a revolutionarydesign that makes your car seat the best seatin the house.

It's a total departure from conventionalcar speaker design. Because acoustically, theintenor of your car is nothing like yourliving room.

The Separates include two 6" x 9"woofers to be mounted in your car's rear deck.In this manner they utilize the large volumeof the trunk to provide solid, deep bassresponse.

Two 27 phenolic ring tweeters mounthigh in the front doors to give you precise,transparent high frequencies. Two 3'/2" mid-ranges beneath the tweeters let you enjoy allof the subtle -yet -important middle frequencies.

The Jensen Separates even come withan under -dash control/crossover unit with indi-vidual controls for each tweeter and each mid-range. This speaker system is also ideallysuited for the advanced function of bi-amplification.

The Jensen Separates. The undisputedmaster of car stereo sound reproduction.

Artful, ever -faithful music. That's thethrill of being there. That's the JensenSeparates.

JENSENThe thrill of being there.

For more information, write Jensen Sound Laboratories,Division of Pemcor, Inc., 4136 N. United Parkway,Schiller Park, Illinois 60176.


Bring along . . .

records that place

the highest demands

on a speaker.

power -handling capacity.What constitutes recommended minimum and maximum power levels

varies among speaker manufacturers. One might list the minimum ampli-fier power for undistorted background listening level, and the maximumthe speaker can take without disintegrating. Another might quote theminimum power that can produce reasonably high levels without ampli-fier clipping distortion, and as maximum power the most the speaker cantake before distortion increases by a specific (but unspecified) amount.Some speaker manufacturers use rms or continuous power for these spec-ifications; others might use peak or average power.

Still, these specifications do suggest how much power a certain speakerwill require. For best results, the speaker's maximum capacity and theamplifier's rated power should be about the same. Underpowered ampscan cause problems; they may be driven into clipping, causing audibledistortion and can burn out a tweeter.

Impedance may be a factor, too, especially if you plan to run more thanone pair of speakers at a time. In that case, 8 -ohm speakers are a betterchoice than 4 -ohm ones; the latter could damage some amplifiers if drivenin parallel.

The real challenge, the real work, and the real fun comes in listening.You must know what to listen for and how to insure that you can hear it.

That insurance begins with limiting your listening. Don't make awhirlwind tour of local hi-fi shops, trying to hear everything at once. In-stead, listen at length to the best speakers in the shops (definitely includ-ing those you can't afford), priming your ears to recognize quality. Bringalong some favorite records (if they're worn, buy new copies) with musicthat will place the highest demands on a speaker and use them as demomaterial. (Don't, however, ignore the records the dealer offers as testingmaterial; just be sure yours are included too. Also, never use synthesizedrecords where the stereo image has been synthesized from a mono signal:Any imaging shifts that occur may arise from the record and not thespeakers.

Now start investigating speakers you might actually buy. Weed outthose that are unsatisfactory with simple tests. Pass over any speakerthat sounds bad; it's not vital to figure out what's wrong. Roughly, checkfrequency response with interstation noise from an FM tuner. If you canhear an identifiable pitch, or if the noise seems concentrated in one area ofthe spectrum, be suspicious of the speaker's balance. (You can, however,alleviate bassiness in a floor -mounted speaker by raising it a foot or so, orincrease the bass of a bookshelf speaker by setting it on the floor.)

Check high -frequency dispersion by walking past the speaker while theinterstation noise is playing. A gradual fall -off of high frequencies at thefar edges of the speaker's sound field shows even dispersion. Peaks anddips in high -frequency response, or narrow beams, indicate a problem.

Select only those speakers that are suited to your listening room, e.g.,an extra -bright speaker is better for a dead, softly -furnished room, but abad choice for a bright, reflective one, and vice versa. Often tweeter levelcontrols can compensate for these effects, but have the control's effectdemonstrated. If possible, listen to the speakers under the same circum-stances. Try for a room of similar size and similar reflectance, use an am-plifier of the same power as your own, and ask to have your demo recordsplayed with the same cartridge that you normally use. (If your cartridgeis mounted in a "universal" headshell, bring it with you-carefully packedto prevent stylus damage-and use it on the dealer's turntables.) You'llnever get an exact match, but the closer you come, the better you'll knowhow your new speaker will sound at home.

Compare speaker systems two at a time, and don't bring in a third pairuntil there's a clear winner to the first face-off. Be absolutely sure that


Scott's unique gold warranty care. Individualizedwith your warran tySCOTT model and serial

Warranty Identification Card numbers, and expi-ration date. Scott'sfully transferable,tive-year Farts andlabor -limited warranty is your assuranceof lasting pleasure.

SA Artaus ,1.1111,IMudd

Strut P..mber-ixperat.on I)te

PR) -11.013 Spetiers705823/7765r24

,terrber I. 1984

A Scott exclusive. By mrefdly scaremn troll ing the varittior of

impedance over the entire Iteniagrange, Scott speakers give you

maxim -am amplifier power output mrmn3FDand in nimum speaker di, to-1bn. IIVIPEOUJCF

Because Scottputs more in.Deeper, richer lows. Crisper, clearer highs. And an accuracy acrossthe entire tonal spectrum that's second to none. That's what you getwith Scott Controlled Impedance speakers.

No matter what your listening preference, Scott speakers willmake your whole sound system sound better

At Scott, there's no such thing as an "off -the -shelf" component.Unlike many other makers, Scott custom designs and acousticallytailors every speaker componenf to give you accurate frequencyresponse, high efficiency, and extra power handling capacity. Afterall, the sound you get out depends on what we put in.

But listen for yourself. And you'll hear just how much Scottspeakers really put out.

For more information on Scott speakers, or onour entire audio line, see your nearest Scottdealer or write H.H. Scott, Inc., CorporateHeadquarters, 20 Commerce Way, Dept. I S,Woburn, Massachusetts 01801. In Canada:Paco Electronics, Ltd., Quebec, Canada.

SCOTTThe Name to listen to.,Makers of high quality high fidelity equipment since 1947.


StopListeningTo et

And start listening to musicas you've never heard it before.

Completely free of thespurious vibrations caused byconventional paper conespeakers.

Mitsubishi has eliminatedthose vibrations by eliminatingthe paper.

Instead, we build our woof-er cones with an aluminumhoneycomb core in a sandwichof glass fiber.

Unlike paper cones, thehoneycomb structure is rigidenough to maintain its shape,yet light enough to be

exceptionally responsive.So it can put out sound

without adding to it.

And since the glass fiber isnon -porous, it gives our air sus-pension speakers a perfect seal,and a lower resonance fre-quency for better bass response.

We've also added a fluxnormalizing ring that reducesdistortion by 20dB. And auto-matic overload protection.

The end result is a speakercapable of a level of perfor-mance literally unheard ofuntil now.

If our honeycomb speakerssound too good to be true,test listen to them and judgefor yourself.

It's what you won't hearthat will impress you.

MITSUBISHI'AUDIO SYSTEMS

Mitsubishi's Honeycomb Speakers. MS -1010" 2 -Way Bookshelf. MS -20 12" 2 -Way Bookshelf. MS -30 12" 3 -Way Bookshelf.For more information write Melco Sales, Inc., Dept.46, 3030 East Victoria Street, Compton, California 90221.


the sound levels are precisely matched. A speaker that's a fraction of a dBlouder will sound cleaner and more open. Readjust levels from time totime too. Since speaker frequency responses differ, one speaker maysound louder on some passages and softer on others than the speaker it'sbeing matched against.

Note overall balance and clarity. Can you hear all parts of the soundspectrum, all instruments and voices clearly? Are any of them over- orunderemphasized? Beware of any speaker that makes all music soundalike-you want to hear the music, not the speaker. Actually you'll be lessconscious of a better speaker-I always know I'm hearing a good speakerwhen I find myself asking for the order number of the record beingplayed. Any speaker that seems to have no highs or lows-or that seemsall highs or all lows-should be rejected.

No matter what a particular speaker sounds like, a musical passageprobably exists somewhere that will make it sound good. Murphy's Lawsuggests that this passage will be the first one you play. So listen to a widevariety of instrumental textures through each of the speakers you're test-ing.

Most people have a natural tendency to switch speakers between pas-sages out of respect for the music. Resist that urge. Switch in mid -passageso that the same sounds will be heard from both speakers in close se-quence. Intersperse short A -B comparisons with longer periods of listen-ing to each speaker individually and then compare how each sounds inrelation to the other.

Overall balance isn't everything. Pay attention to the way eachspeaker handles particular types of sound. Bass should be rich and full-hut only when the music's bass is. And that bass should change pitch asthe music does. If it drones away at one note of its own regardless of wherethe music's going, that's a sign of uncontrolled bass resonance.

The bass must also be clean, so that you hear the music's fundamentalfrequency, not a distorted note an octave or two higher. And listen to howlow that fundamental goes, while remembering that, on the average, thebetter the bass response, the more power the speaker will demand, andthe more it will cost.

Organ records are good to test sustained bass output. But you want to

1. In conducting an A / B comparison test ofspeakers, be sure that both sets are made to playat the same level. Otherwise the louder set usuallywill sound better regardless of quality.

2. If the speakers you audition are a part of a dis-play in which a great many are stacked against awall, be sure that the candidates are in reason-ably equivalent positions. A speaker at floor levelwill have a good deal more bass than one that istwo feet off the floor.

3. Speakers that are designed to reflect off thewalls probably will sound very different in theshowroom, as compared with your listeningroom, especially if the former contains many

10 Loudspeakermodels. Each speaker in the showroom that is notbeing driven sucks up acoustic power from thosethat are being demonstrated.

4. Bring your own records and/or tapes, prefera-bly ones with which you are intimately familiar, touse in auditioning. If your choices are discs andyou want to be really fussy, ask the dealer to playthem with the cartridge model you have in yourhome system. An alternative is to use the car-tridge model you intend to use with the newspeakers.

5. If the speaker manufacturer has made specificrecommendations about the positioning and in-stallation of his product, be sure they are ob-


test bass transients too. A good swift thump from either a bass drum ortympani will do the trick-particularly on the new digitally -mastered rec-ords, which excel at bass transient response.

Bass should have a sense of power: You should be able to feel it whilestill hearing the notes change. The more expensive the speaker, the moreyou should expect this.

For an upper -bass test, tune in a male FM announcer. If one speakermakes him sound as if he is in a barrel, there's probably a resonance in the100 -Hz region. If that happens on all the speakers, he may naturallysound that way, in which case, tune in a different station. Check the an-nouncer's voice for nasality as well (a sign of a midrange peak:, and foroversibilant "S", "Z" and "F" sounds, which are signs of either distortionor treble peaks.

Speakers that make the music seem to shoot out towards you usuallyhave a midrange peak; those that make it recede into the distance have amidrange dip.

Ignore demo records that are all brass, full of plucked string -bass notes,or other gimmicks foreign to your normal listening. Such records canmake almost any speaker sound good. The material is a lot easier to re-produce than you'd think.

Choir recordings are excellent tests of midrange clarity: The better youcan separate the voices from each other, the more clarity the speaker has.(But first test your choral record on the best speaker in the house; choirsare very hard to record properly.)

Piano-rock or classical, as long as it's acoustic-should have bell -liketransparency, neither muted nor jangly (signs, respectively, of deficienthighs or treble peakiness and distortion). Stringed instruments (espe-cially in well-miked chamber recordings) should have a definte "bite" asthe bow first bears down, yet not sound raspy. Cymbals should shimmer.

Sound -effects records sometimes make good tests. Use those soundswith which you're familiar (ice in a glass is O.K.; steam locomotives andthe A-bomb, however, won't tell you as much . .. and the A-bomb cut wasprobably faked, anyway), and a record you know well.

Try every speaker at a variety of sound levels. The sound balanceshould "track," with the music sounding much the same as you raise andlower the volume; but expect to lose a noticeable amount of bass and per-

Shopping Tipsserved-both in the showroom and at home.

6. Unless you are sure that an FM station in yourarea does not limit or otherwise process its signal,avoid using FM music for speaker evaluations.

7. When you find a speaker you think you like, lis-ten to it for a fairly long time (half an hour shoulddo) to check for long-term fatigue effects. Betteryet, try to arrange for a home trial. The more pres-tigious audio stores often offer this service.

8. Try to test a prospective speaker with an ampli-fier at least similar to the one you plan to use. Thespeaker's performance will avail you little if youcannot supply the power it needs. Damping factor

of the test amplifier also should be similar to thatwith which the speakers will be driven.

9. For this reason, demonstration systems thatadjust relative levels by way of attenuators be-tween the amplifier's output and the speakersmay compromise performance of the more ef-ficient models through loss in effective dampingfactor. Ask your dealer whether level adjustmentsare made at the input or output of the amplifier; ifthe latter-and particularly if you hear any boomi-ness in a relatively efficient speaker sysem-youmay need to hear the speaker driven directly fromthe amplifier before you can assess it adequately.

10. Listen with an open mind.

1980 Edition 17

At high volume

levels . . . (don't)

confuse loudness

with distortion.

haps a touch of treble at low volume levels due to the low-level insensitiv-ity to the frequency extremes of your ears. But the speaker's soundshould neither change drastically nor sputter in and out when you turnthe volume down.

At high volume levels, be sure not to confuse loudness with distortion.We're so accustomed to hearing loud sounds distorting that it's possibleto equate distortion with loudness. If the speaker doesn't seem "loud,"but you have to shout to be heard over it, it's loud, alright-but clean.

Listen for accuracy in stereo imaging too. The more clearly you can lo-cate instruments or performers, the better the imaging. The simpler themicrophone setup used in making the recording, the more likely it will bea good test for imaging. (My own favorite image -test disc is Die Fle-dermaus, DGG 270 7088, which I've also heard used as a test and demodisk by both Infinity and B & W; it's also a good performance.) These lis-tening checks will prove as exhausting as they are exhaustive, and you'llfind that after comparing three or four pairs of speakers in sequence, yourear and brain will tire. When that happens, take a break. Go back later inthe afternoon or the next day and resume your listening.

Try to label all the differences you hear, and characterize eachspeaker's sound verbally. It doesn't matter much whether you use yourfavorite reviewer's vocabulary, or one of your own, so long as you use itconsistently. Take notes, for when you're through with your listeningtests, you'll have heard so many speakers that you'll find it difficult toremember how each sounded.

Beware of speakers whose sound is too memorable. Usually it's thepoor but flashy speakers that reach out and grab you by the ear, due tooveremphasis of some part of the frequency range.

Some speakers, due mainly to skilled design, give far better value thanothers. This will show up in your listening comparisons. But there areother routes to getting more for your speaker buck. Kits, closeouts, sec-ondhand and "distressed" speakers are among those worth considering.

Kits are an obvious tradeoff: You do some of the work, and are recom-pensed in lower cost and in a feeling of accomplishment. On the otherhand, you may not get a chance to hear the finished product until you'vebought and finished it. If you know someone who's built the kit, or if thedealer has a finished unit on the floor, listen to it. You may like what youhear.

Some work may be involved in repairing the finish on speakers sold at adiscount because of cabinet scratches or other non -electronic damage.But you may be able to set up your system so that the damage won'tshow.

When a new model supersedes an old one, some dealers close out theirold stock at reduced prices. If the reduction is small, the new (and pre-sumably improved) version may be the better buy. But if the reduction issubstantial, it may give you access to a model that was above the pricerange you had contemplated. If the sound is as pleasing as the price, buythe speaker.

Used speakers may or may not be superseded models, but they havebeen secondhand. If the sound is good and the cabinet's dents or scratchesare tolerable at that price, don't let them deter you from buying. Speak-ers are more likely to die than to deteriorate. Speakers with foam sur-rounds are an exception, though; examine the foam portions of thesecarefully for flaking, powdering, or cracking before you buy.

These are the basic tips on speaker buying. The rest is mostly a matterof keeping your ears trained. And that process can last as long as yourears do: I'm on my fifth or sixth speaker system, and already shopping forthe next one. I still can't claim to know it all. But then, who likes a know-it-all? Mr

18CIRCLE 2 ON READER -SERVICE CARD -31.

How Audio Historyis made.

Has American ingenuitytaken a back seat to cheaperforeign labor? Not at AltecLansing, where we've beeninventing and building high -quality speakers for well over42 years. Like the Model 14.It's so unique, that before wecould create it, we first had toinvent a whole new family ofcomponents.

Conventional beaming Mantaray expandsnarrows listening area. listening sweet spot.

We began with a new typeof horn. The Mantaray T"* It'sthe first "constant directivity"horn ever created. Conven-tional horns, cones and domes(including so-called omnidirec-tional and reflective speakers)tend to "beam," that is, narrowtheir angle of sound radiationat higher frequencies. Thiseffect causes the stereo imageto lose strength off the centeraxis and to actually wander.

Mantaray, on the otherhand, delivers a clearly -definedsound wedge that keeps itsstrength regardless of themusic's changing frequencies.

U.S. and foreign patents pending* *U.S. Patent No. 4050541

You get the full spectrum ofsound and the most solid three-dimensional stereo imageyou've ever heard. And sincethe sound doesn't diminish offcenter axis, the Model 14enlarges your listening area,your "stereo sweet spot."

As an extra benefit, Man-taray's precise sound focusingmeans your music goes in yourears-not in your drapes,

walls, and ceil-ings. Conse-quently, it'smore likely thanother speakers tosound the samein your home asit does in yourdealer's showroom.

Then to giveyou even higherhighs, we devel-oped the firstradial phase plug,the Tangerine!**In contras: to

conventional phase plugs withtwo equidistant circular slotsthat block some frequencies,the Tangerine's tapered slotspermit a free flow of high fre-quencies to beyond 20 KHz.

Equally important to allthis is our new Auto-

matic Power Con-trol System.Unlike fuse -typedevices or cir-cuit breakers,

the system keepstrack of the power

Tangerine pumped into thespeaker, lets you know with ablinking light when powerexceeds safe limits, and thenreduces overloads automati-cally, but without shutting thespeaker off. It's quite a system.

MOPE

A L-TEC

Power Control

In addition, the Model 14offers you super -efficiency,highpower.handling capacityand exceptional dynamicrange, plus a new ventedenclosure with a 12 -inch bassdriver for a tighter, crisper lowend. So that's how audio his-tory is made. And it's all yoursat a price that means the bestsound value available for yourhome today.

So the next time someonetries to tell you that Americanworkmanship is taking a backseat, play your Altec Lansingspeakers for them and provehow wrong they are.

For a free brochure andthe name of your local dealer,write:ktec Lansing International,1515 South Manchester Avenue,Anaheim, CA92803. ALTEC

LANSING'The Choice of Professionals

Altec Corp.

Why yourlistening room

can be more

important thanthe speakers

you choose

by Alan Fielding

CriticalComponent

LeftSpeaker

RightSpeaker

Many stereo shoppers, after giving due care to their choices, take theequipment home, plunk the receiver turntable down on some convenientflat surface, put the speakers where they are not in anyone's way, hookthe whole thing up, and consider themselves "in business." They don't

20 CIRCLE 21 ON READER -SERVICE CARD-*

Inside, most speakers look pretty muchthe same. Drivers, baffle board and enclo-sure. Which is why some manufacturersmake so much noise when they come up withanything new.

But in the midst of all the uproar,Kenwood's engineers have quietly devel-oped five important design improvementsyou won't find anywhere else.

1. Separate front baffles. We mountedthe mid and high frequency drivers on a sep-arate baffle board. That keeps the woofer'svibrations from interfering with the mid andhigh frequencies. So you can get solid basswithout losing any of the vocals.

2. Cross -over coil positioning. Wefound that two coils next to each other on acrossover network can cause signal leakagefrom the midrange to the woofer. By isolating

the co. Is away from each other, we eliminatedcross -talk and muddy midrange.

3. Thermal/shock cone constrictionWe manufacture our own wood-pilla conesby applying our exclusive heat/shock treat-ment. This c-eates a cone that is more rigidthan the usual pressed type for low dis-tortion, yet 1,ght enough to deliver muchbetter efficiency.

4. Midrange stabilizer. To get the nasa!sounc out the midrange frequancieswhere most of the music is, we int-oduced acenter support system and a 3 -point conesuspension. To you that means Ilea- sounc'imaging and better transient response.

5. Power linearity. The frequency re-sponse of most speakers deteriorates at highpower levels. By using a computer, we de-signed the LS -1200 to deliver the same linear

frequency response throughout its powerhandl ng range. From solo flute to fullorchestra.

Listen to the LS -1200 at your Kenwooddealer and discover that, even at low listen-ing levels, you get exceptional depth, clarityand fidelity. At high volume, it delivers thekind of tonal quality you normally expectfrom a live performance with a clean, punchybasE and c;ear, open highs.

That's one more reason the LS -1200 issimply too good to keep quiet.

your speaker's reputation shouldbe as good as your receiver's.

KENWOOD.For the Kenwood dealer nearest you. see your Yellow Pages.or wrie Kenwood, PO Box 6213, Carson, CA 90749In Canada Magnasunic Canada. Ltd

Speaker design takes five steps forward.Quietly.

isk

Like any component,

a listening room must

have reasonably flat

frequency response ...

really think about the room or the position of the system in it-after all,what difference can it possibly make as long as nothing blocks the speak-ers? Besides, the way we listen has to fit the rest of our life-style, right?Well, friends, it certainly does make a difference-and a big one. If you'reserious about listening to music, you'll have to face the fact that puttingyour stereo system in an unsuitable room is as silly as setting up a Ping-Pong table that measures 9 by 5 feet in a 10 -by -8 room.

Your listening room is part of the audio chain, between the loud-speakers and your ears; every sound that reaches you must pass throughit-and be altered by it. It should be no surprise, then, that the room youchoose may influence the final sound more than your choice of loud-speakers. This is an inconvenient truth, since it's normally far easier tochange speakers than to change rooms, but there are steps that you cantake to improve less than desirable acoustics. And, of course, acoustic op-tions are open to anyone who is building a house from scratch or heavilyremodeling one.

Like any component, a listening room must have reasonably flat fre-quency response in order to avoid screechy highs or boomy lows. Then,too, it must be free of distortion in the form of loose panelboard or otherobjects free to buzz and rattle at various frequencies. And just as tran-sient response is important to a phono cartridge or speaker, it is impor-tant to a room. If the room sound takes too long to build up-and depend-ing on the way in which sound is delivered from the speakers to thelistener within the room-sudden attacks, like those of percussion orbrass, are dulled; if the sound takes too long to die away, the "hangover"garbles the sound. Finally, it is a good idea, especially in an urban setting,to soundproof your listening room as much as possible, otherwise youmay not be able to play the system as loud as you like for fear of wakingthe kids or eliciting complaints from neighbors.

When a loudspeaker (or any other sound source) starts to transfer itsoutput into a closed space, the sound waves are reflected from and be-tween the boundaries of the space. In some ways, conditions in the roomresemble those in an organ pipe; the frequencies whose wavelengths "fit"most neatly into the dimensions of the space are reinforced. These arecalled the "natural frequencies" of the room and constitute its natural"modes" of vibration. Conversely, other frequencies, which the room re-flects back to the source out of phase (zigging when the source is zagging,so to speak), at least partially cancel themselves.

To understand how to adjust the acoustics of a listening room, onemust first understand how a perfectly reflective room behaves. Assumethat a ray of sound leaves the source and bounces around the room, losingnone of its energy in the process, finally returning to the source just intime to cancel the radiation then emerging. The net transfer of energyinto the room at this frequency is now zero. But if the wave's energy ispartially absorbed in the room, the cancellation cannot be complete.Thus energy will flow into the room to equal the amount absorbed. If ab-sorption is total, the source delivers its full output. A room that is totallyabsorptive at all frequencies (an anechoic chamber) allows sound topropagate exactly as if no boundaries existed-as if it were outdoors.

The first natural mode of a room of normal residential dimensions isusually at a low bass frequency. For example, the first few modes of a rec-tangular space 23 by 131/2 by 81/2 feet fall at roughly 25, 43, 48, and 49 Hz.Higher modes are progressively closer in frequency, eventually over-lapping to become quasi -continuous. While the broad trend of all modesin any given region of the higher frequencies affect the coloration of a


The Sound of Kossis no longer something you

have to keep to yourself.You no longer have to

limit your listening tostereophones to enjoythe incredible Sound ofKoss. Because now youcan get the optimumloudspeaker system,and the Sound of Koss,in any Koss CM seriessystem you choose.

KOSS CM 1010

Here's the ultimate2-bandpass system. TheKoss CM 1010 has aunique passive radiatorto enhance the lowertwo octaves of bass. Aswell as a special 8 -inchwoofer to increase themidrange frequencyresponse up to 3500Hz.

And with the CM1010's 1 -inch dometweeter, you get thehighest energy output,and lowest distortion,of any tweeter on themarket.

KOSS CM 1020

No three bandpassloudspeaker system cur-rently available offersthe benefits of the KossCM 1020. Its dual portsimprove cabinet tuningand structural stability.And its 10 -inch wooferprovides a 3db gain inefficiency, as well as flatresponse over the lowerbandpass. In addition,the CM 1020 uses a 41/2 -inch midrange driver to

capture all the energy andpresence of this criticalbandpass. And the CM1020's unique 1 -inch dometweeter produces thehighest energy output andlowest distortion of anytweeter currently avail-able. Indeed, theKoss CM 1020 is the3-bandpass loudspeakersystem you really haveto hear to believe.

KOSS CM 1030

The Koss CM 1030represents the ultimate in4-bandpass loudspeakersystems. It includes a 10 -inch woofer, mass aligned

dual port system, aparallel midrange systemwith two 41/2 -inchdrivers.and both atweeter and a 1 -inch trebletweeter that featurea unique acoustictransformer. Eachhas been carefullyand specificallydesigned to producethe optimum spec-tral characteristicsof their respec-tive bandpass.

Uniting theCM 1030 into a totalsystem that representsthe ultimate in loud-speaker technology, is aunique, quasi second -ordercrossover network. In all,

the CM 1030 is so amazing,no other 4-bandpass sys-tem even comes close inbass, midrange or highbandpass performance.

KOSS CM 530

Setting entirely newstandards for bookshelfspeakers is the Koss CM530. Whether you placethem horizontally or verti-cally, they deliver perfectmirror imaging, an incredi-ble degree of dispersion,and the breathtakingSound of Koss.

KOSSPRO 4/TRIPLE A

Write us, c/o VirginiaLamm for a free copy ofour full -color loudspeakercatalog. And when youvisit your audio dealer tohear the incredible Soundof Koss loudspeakers, take

an extra momentfor a privatelisteningexperiencewith the

world famous Koss Pro/4Triple A. Once you'veheard the Sound of Kossfor yourself, you'll knowwhy hearing is believing.

(C" 1979 Koss Carp

K O S astereophones/loudspeakershearing is believing"

KOSS CORPORATION, 4129 N Port Washington Ave . Milwaukee. Wisconsin 53 212 International Headquarters Milwaukee facilities Canada France Germany IrelandCIRCLE 35 ON READER -SERVICE CARD

Now a speaker system so advanced you don't need a "listening position:' BIC introducesSoundSpan. The first loudspeaker design capable of those ideals that conventional approaches could neverachieve. A design that creates a single -point sound source that is absolutely phase coherent, with totally uniformpolar response at all frequencies, and perfect 360° dispersion. That's Total Power Radiation. And the result almostdefies description. Walls, floor and ceiling are replaced with musical presence. Sound doesn't come "from" thespeakers. It's just there, live and real-unaffected by speaker placement or listening position. For complete detailssimply write B.I.CIAVNET, Dept. S, Westbury, New York 11590. The new SoundSpan Speaker Systems.

SoundSpan works anywherein a room-against one wall,on adjacent walls, opposite walls-even as end pieces or room dividers.

Series Z Changer -Turntables Cassette Decks' SoundSpanNSpeaker Systems The Beam Bo;CIRCLE 6 ON READER -SERVICE CARD

room (its "brightness" or "warmth"), individual modes are of interestchiefly at low frequencies.

The number of modes to be found in a space of any given dimensionsdepends essentially on its volume. Thus, a nonrectangular space hasabout as many modes as a rectangular one of similar volume. But theyare distributed in a more complex way, and the fact that they are lesslikely to coincide exactly (and thus doubly or triply reinforce certain fre-quencies) in nonrectangular rooms make spaces of this type particularlyadvantageous-something you should keep in mind if you're contemplat-ing extensive remodeling or building. (For example, you could realize amajor acoustic improvement by removing the floor of an unused attic tocreate a cathedral ceiling for a listening room below. In general, an irregu-lar room shape creates less reinforcement at the natural frequencies; iteffectively broadens the "tuning" of the room modes and makes fre-quencies more likely to coalesce.

We've been considering the "steady-state" response of a room-its be-havior when a continuous signal is turned on for a long time and the pat-tern of sound waves is allowed to stabilize. Although its behavior duringthe initial buildup and terminal decay of the sound is considerably morecomplex and difficult to predict, if buildup and decay time (sometimescalled reverberation time) are kept short enough, the details of such be-havior are unimportant.

A good case can be made for listening rooms with fairly high sound ab-sorption. Absorption at high frequencies is easily supplied by such normalfurnishings as carpets, scatter rugs, upholstered chairs and sofas, andwall hangings. But these must be strategically placed, and part of thestrategy involves the needs of your speakers. Some manufacturers statespecifically what conditions are necessary for their speakers to performbest. In so-called omnidirectional designs, for example, reflection of thesound off walls and ceilings is a necessary part of the propagation "gameplan" and will be inhibited by excessively absorptive surfaces or incorrectspeaker placement. Conversely, the design of speakers such as the British"monitor" types are predicated on the theory that the direct speaker -to -ear wave is the important one and that the diffused and reflected ones arebasically undesirable in the quest for the best possible stereo imaging andminimum coloration; too reflective a room obviously works against theirdesign intentions. The vast majority of speakers, however, are consideredto be general-purpose designs and delivered without any particular in-structions for best use.

Absorptive material, it turns out, is far more effective when distributedrandomly throughout a space rather than concentrated in one area. Thusseveral small scatter rugs are likely to be as effective as a single wall-to-wall carpet-or even more so. Similarly, wall hangings are best if there arequite a few of them and if they are of moderate size. Overstuffed furni-ture, throw pillows, and draperies (particularly if ample enough to hangin folds) all contribute to absorption at mid and high frequencies, reduc-ing the effect of the room on musical transients. Ceiling treatment, too, ismost effective when applied in irregular patches. In a word, experiment.

Rooms with long parallel walls may be subject to flutter echo, a condi-tion in which an impulse (such as a handclap) reflects back and forth be-tween the walls and is stretched out into a series of rapid "slaps." Thiscansometimes be relieved by covering most of one of these walls with absorp-tive material. Flutter can also occur between floor and ceiling; carpetingnormally controls the effect.

Random arrangement and shape of the absorptive and reflective sur-

Absorptive material

is far more effectivewhen distributed

randomly throughouta space ...

1980 Edition 25

... Relatively heavyabsorptive treatment

has certainpractical advantages ...

faces-like irregular room shape-also contribute to the diffuseness of thereflected sound. That is, sound bouncing off the walls tends to reach thelistening area approximately equally from all directions. This virtuallyassures that the room sound will not be able to confuse the loudspeakers'stereo image, which will be formed, as it should, by the direct radiation.

Despite the apparent advantages of making a listening area highly ab-sorptive, the method has its price. The problem is that a stereo systemplaying in a highly absorptive or "dead" room will not sound nearly asloud as one playing in a reflective or "live" room, where the reverberationreinforces the direct sound from the speakers. This directly affects theamount of amplifier power you will need. For example, your best listeningposition for a low -powered system playing in a "dead" room probably iswithin 6 feet of the speakers in order to keep the sound level at the lis-tener's ear reasonably high. The best solution, however, is to use an am-plifier with enough power-and speakers with enough power -handling ca-pacity-to produce adequate listening levels without much reinforcementfrom the room. This should give you the cleanest sound your system canproduce. (It is, in fact, one rationale for the use of a superamp.)

Yet there are those who do not object to the acoustics of a dead room.To a certain extent, this is one of those unarguable matters of taste; butrelatively heavy absorptive treatment has certain practical advantagesthat accrue even when the room is not being used for music: 1) The levelof noise (whether generated internally or externally) is lower. 2) Lesssound "leaks" out of the room to cause problems elsewhere. 3) Two ormore conversations can take place with reduced aural competition. 4)The overall acoustics tend to be "intimate," favoring sounds that origi-nate nearby over those from far away.So far, we have said very little about taming the acoustic effects of theroom at low frequencies. Materials suitable for low -frequency absorptionare hard to come by and do not fit happily into a domestic environment.Yet the room modes at low frequencies are the farthest apart and causethe greatest unevenness in the sound. Moreover, such room modes are in-evitable concomitants of the room dimensions.

But the most common problem at low frequencies-and one that can besolved to a substantial degree-involves not the room modes, but the dis-tance between the sources of bass sound (woofer cones) and the roomboundaries. The sound radiates equally in all directions, reflects from thenearest boundaries, and returns to the woofer. When the wavelength ofthe speaker's output equals four times the distance from the woofer to aboundary, cancellation reduces the radiated power by half; when the dis-tance corresponds to half a wavelength, reinforcement doubles thepower. This sonic behavior is not unlike that of room modes, except thathere the frequencies of cancellation and reinforcement can be changed bymoving the loudspeaker with respect to the room boundaries.

Some manufacturers have taken advantage of this effect by designingspeaker systems so that woofers are located directly against one, two, orall three of the nearest boundaries, allowing the woofer and its reflected"images" to operate in unison at all frequencies and reinforce each other.This not only eliminates a serious source of room coloration, but alsoboosts the efficiency of the woofer. The only disadvantage of this tech-nique is that the room modes associated with the boundary or boundarieswith which the woofer is coupled will likely be exaggerated.

Most loudspeakers are designed in the form of a "box" with the driversarranged on one of the long faces, and it is difficult to place them so thatthe woofer is in suitable proximity to, say, the floor and the nearest wall

28 CIRCLE 20 ON READER -SERVICE CARD -31.

KEF Model 304 KEF Model 303on optional stand ULS II on optional stand ULS I Elegant, Efficient,

Effective.

The traditional KEF accuracy inmusic reproduction now combinedwith a higher level of efficiency

Whetter for use with amplifiers up to 100watts or music centers as small as 10 watts,the two new KEF speakers-Model 303and Model 304-can achieve surprisinglyloud volume levels without any sacrificeof the tonal quality for which KEF isworlc -famous.Visit tour authorized KEF dealer for athorc ugh demonstration.For I -is name and product informationwrite to: KEF Electronics, Ltd., c/o Intratec,P.O. Box 17414, Dulles International Airport,Was iington, DC 20041.In Canada: Smyth Sound Equipment, Ltd.,Quebec J4H 3V7.

.,..

TheSpeakerEngineers

Often an inch or two

one way or the other

in location separates

success from failure.

without angling the more directional output of the tweeter (and mid-range driver, if any) away from the listening location. Experience, backedup by a modicum of theory, has shown that such speakers perform best-that is, give the flattest frequency response-when located well awayfrom the nearest room boundaries to increase the length of the reflectivepaths from the speaker to the floor and walls and thus lower the fre-quencies at which cancellations and reinforcements occur. It is impor-tant to remember that the speaker must be moved away from the floor (orceiling) as well as the walls, which often necessitates placing it on a standor suspending it. Sometimes a small speaker whose woofer gives up grace-fully rather than attempting to reproduce bass tones beyond its musclecan be positioned so that the principal response anomalies created by theroom boundaries are below its cutoff point.

For larger speakers whose aspirations include bass drum sounds and or-gan pedal tones, the situation is more difficult and calls for more elabo-rate strategy. One trick that has worked successfully is to place thespeaker so that the distance from the woofer to the wall behind it is justabout twice that between the woofer and the floor. Now a cancellationand a reinforcement coincide in frequency and nullify each other. It is im-portant that the distance not be doubled exactly, for this raises the possi-bility that double or triple cancellations or reinforcements will occur athigher frequencies.

More than anything, this example serves to suggest some of the com-plexity of the situation and explain why the best positions for speakersusually are found by trial and error. Often an inch or two one way or theother makes the difference between success and failure. It is virtually im-possible to predict where a given pair of speakers will sound their best in aroom, but in all likelihood they will be on stands and several feet awayfrom the nearest walls. Again, however, it is important that you observeany placement instructions the manufacturer provides with the speakers.A corner horn will have weak bass if it is moved out of the corner, and thesound and stereo imaging of most dipole radiators (typically, but cer-tainly not exclusively, the full -range electrostatics) can be severely com-promised by placing them too close to the wall behind them.

Minimizing reflective effects at low frequencies means sacrificing con-structive reinforcement, just as it did at high frequencies. This type ofpositioning means the speaker will have less deep bass, but what there iswill be the cleanest you can get. Here, too, the day is saved by high powercapability in both the amplifiers and the speakers-which, for really highquality results, must tolerate enough bass boost to compensate for thelow -frequency rolloff if it occurs at an audible frequency. And since typi-cal absorptive materials in the home soak up more highs than lows, thebass may still predominate and require a cut. The use of low -frequencyequalization in an attempt to compensate for room modes is, inciden-tally, doomed to failure; such means are effective only in correcting broadtrends.

Obviously, the best listening room is one that has been designed forthe purpose from scratch, and for this there is little that can substitutefor competent professional services. The task of design and constructiondoes not necessarily lie beyond the abilities of a do-it-yourselfer, but it isdifficult and requires a great deal of knowledge and experience-and re-search. But even those of us who content ourselves with less radical tai-loring of the listening environment have effective methods at hand. Care-ful choice and arrangement of furnishings, as well as the stereo system,can result in astounding improvements. Many listeners have never reallyheard their music systems at all-their rooms are in the way. HF

28 CIRCLE 9 ON READER -SERVICE CARD -40

The Dahlquist D(240. Time...and Time again.

Critics and audiophiles agree- the listening quality of the DQ-10

is unexcelled. What accounts for its superb performance?

Time Much credit for its smooth coher-

ence must be given to the precisely matched transient characteristics

of the five drivers. And, a good deal has been written about the

DQ-10 and its extraordinary solution to the problems of time delay or phase distortion. It is not surprising that other high

qua.ity speaker designers have followed suit in offer-

ing their versions of time delay correction.

...and Time Again The real "secret" to the unprece-

den:ed performance of the DQ-E lies in Jon Dahlquist's patented

method for reducing &fir -action, a more audible and destruct ye fo7m

of Cr?' e distortion. The separate bathe plate on wh ch caci driver

is mounted is dimensioned to minimize diffraction in the fre-

quency bank in which i: operates. Thus, the effect of the sound we hear is that of a driver mounted in free space, without obstructions

or surfaces to distort the original sound sour:e.

It can be said that the DQ-10 e.iminates Inaccurate reproduction

caused by time elements - inertial time delay, and diffraction time

delay - distortions that limit the performance of conven-

tional speaker systems. That's why the more critical

listener will select the DQ-10. Time and time again.

EDAM Mill! MIST 601 Old Willets Path

Hauppauge, N.Y. 11787

We're Mesa Electronics.

Who?

Mesa Electronics, andyou're going to be hearing

a lot from us.

If you've ever heard ourspeakers, we'd need nointroduction. If you've neverheard them, you should. But

switch on our line of BassReciprocator speakers.Ordinary speakers (nomatter what they cost) aregoing to sound different indifferent rooms, simplybecause the environmentthey are in affects theirsound. But with the Mesa

left to right: the Mesa 85, Mesa 65, Mesa 45 and Mesa 125.

it's entirely possible youhaven't. Because we'rebarely two years old. Butwe're growing fast. So keeplistening.

Ordinary speakersgo from wall to wall, buta Mesa goes from room

to room.What makes Mesa special?

One good example is ourexclusive Vicom control

FULL

ammonole

MIDRANGE

_0_

BRIGHT

TWEETER

Vicom control, youget consistently goodsound anywhere,because it allows youto position yoursound eleven dif-ferent ways accord-ing to environmentalconditions, or fordifferent kinds ofmusic. (That's up toeleven different waysmore than thecompetition.)

No small achieve-ments: Our Mini -Mesa

Series.But Mesa doesn't just

make big speakers. Wealso make terrific littlespeakers. In fact, so

terrific, with your eyesclosed you wouldn't knowthey were small. There's afull line, from our supercompact Mini -Mesa 15 (lessthan 4 inches wide and 6inches high) perfect for yourcar, van, boat or plane, to theMini -Mesa 30, an unobtru-sive bookshelf speaker atless than 5" wide and 8"high, to our Mini -Mesa 50

3 -way system complete withhorn tweeter, yet only 61/2"wide. We've already made aname for ourselves in theminiature speaker field, andsmall wonder.

( (( ( ( , ( i ( ' ( ( ( ( . (

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Mobile speakers reachan all-time low: Mesa intro-duces subwoofers for cars.

For those unfortunateswho didn't buy a Mesa minispeaker for their car, or thoseperfectionists who did andwant even better sound,Mesa's new mobile BassBoosters are guaranteed tobring you new lows in

listening pleasure. Two sizes -51/4" round flush mount or 6" x 9"rear ledge mounts-work with anyfull range car speakers, addingthe low notes and instruments thefull range speakers aren't capableof :landling alone. Wait until you

hear what you'vebeen missing.

Look! In thehome! Under thelamp! It's an endtable! No, it's a

Subwoofer!Mesa not only

makes a subwooferfor your home stereosystem, and makesit look like a beauti-ful piece of furniture

to boot, it makes itunique. The MesaMS -80 Subwoofer isthe only subwooferyou can buy with adual level controlthat lets you balapcesatellite eakervolume. The MS -80adds a new dimen-sion to the sound of

any stereo speakersystem, and looksgood while it's doingit. And since basssignals are omni-directional, you canplace it anywhere inthe room-even as anend table.

If Mesa speakerssound so good, whydo we stand behind

them?A lot of speakers

have 90 -day war-ranties. Some haveone year warranties.A few have more. Butonly Mesa offers5 -year limitedwarranties on all ourproducts. We don't doit to make you thinksomething might gowrong with them.We do it because weknow nothing will.

Don't doanything until you

hear from us.We'd like to hear

from you. Write ustoday and we'll sendyou more informationon our products and alist of Mesa dealers inyour area. Once youget to one of them,you'll get the idea a lotfaster than we canexplain it.

megaTM

We're always thinkingof sound ideas.

Mesa Electronics Sales Ltd.2940 Malmo Drive,

Arlington Heights, Illinois60005. (312) 437-6500.


YOU HARDLY NOTICE A HERESYUNTILYOU TURN IT ON.

# '4 a16,

If you're cramped for space,Heresy is a loudspeaker thatwon't cramp your style. TheKlipsch4 Heresy will fit any-where in your apartment and itwill just sit there, gentle asa kitten until you turn it on.Then, watch out. Heresy roarslike a lion.

Here's a small loudspeakerthat has both tremendous

'.11.tr **4

efficiency and wide bandwidth.It uses the same tweeter andmid -range driver as theKlipschorn," the industrystandard for the past 30 years.The rugged 12" woofer ismatched to the box foroptimum bass performanceand bandwidth.

So, just because you can tucka Heresy in out-of-the-way

places, don't underestimate itspower. Your neighbors maywell be calling to see how youmanaged to get an orchestrainto your apartment.Heresy is proof positive thatbig sound can come insmall packages.

klipsch)

Klipsch loudspeaker systems are availablein a wide vanety of carefully -selected do-mestic and exotic hardwood veneers

Please send me your FREE co:or brochure on the full line of Klipsch loudspeaker systems,along with a list of Klipsch dealers.Name AddressCity State ZipClip and mail to Klipsch & Associates, Dept. H129, P.O. Box 688, Hope, AR 71801


Buying Guideto more than1,200

Speakerc

At last count more than 1,200 differentspeakers are presently available. As we'vepointed out elsewhere in this magazine, oneof the best ways to begin selecting the modelthat you'll finally purchase is to first perusethe manufacturers' specs. We think this spe-cial buying guide section is an excellent placeto start. Here's how to get the most out ofthese listings.

First, we make no claims that we havetested any of the equipment listed here, northat the specs represent lab results. In com-piling the information, we tried to compen-sate for the fact that not all manufacturersrate their equipment by the same methods.Since we couldn't possibly test all the speak-ers, the question was, how could we presentit most effectively?

We used a series of guidelines and askedthe companies to adhere to them when theyprovided performance specs on their models.

If they deviated from our reference points, weasked them to state how a particular meas-urement had peen obtained.

Guidelines for speakers-both home andcar stereo-were: designate the design of thespeaker system; the number and type of driv-ers; the system's response with reference toa certain number of dB SPL measured at 1

meter at 1 watt; the recommended minimumand maximum power in watts and dBW; thecrossover points; and any special controls.

Some of these specs, such as size, type,and crossover points, are straight -forward,and where manufacturers have referencedfrequency response, this too is directly com-parable. Jsing the explanations provided inour articles, you can narrow down your se-lections to those that will fit in your listeningarea, the particular design that you prefer,and the models that will best match the power(and impedance) requirements of your amp.

As you head toward the audio store, you'llhave done a good deal of the hard work-de-ciding which speakers are out of the questionfor basic reasons.

Where a particular spec does not appear, itmeans that the manufacturer did not supplyit. N /A, or "not available," is generally re-served for new products on which completeinformation was unavailable at press time.Prices were supplied by the manufacturerand may vary from area to area.

Because of space limitations, not everymodel of every manufacturer has been fullylisted. Those on which complete specifica-tions do not appear are summarized at theend of the manufacturer's product listing.

You may want more information about spe-cific products, in which case we suggest thatyou use our handy reader -service card orwrite to the manufacturers directly at the ad-dresses in the directory.

1980 Edition 35

Home Speaker Systems

ACCULABAcculab8116 Deering Ave.Canoga Park, Calif. 91304

440PriceDimensionsWeightTypeDrivers

Response

CrossoverImpedanceMin. powerMax. powerFeatures

$250251/2H x 141/4W x 11D43 lbs.Acoustic suspension12" woofer; 35/8" cone midrange;23/4" cone tweeter; 31/2" solid-statesupertweeter33 Hz to 30 kHz, +4 dB re 91 dBSPL at 1 meter at 1 watt3.3 kHz; 7.5 kHz; 10 kHz8 ohms5 watts (7 dBW)50 watts (17 dBW)Controlled dispersion; pushbutton

speaker terminals

220PriceDimensionsWeightTypeDriversResponse


$150221/2H32 lbs.Acoustic suspension10" cone woofer; 23/4"cone tweeter40 Hz to 18.5 kHz, +4.5 dB re 90dB SPL at 1 meter at 1 watt6.5 kHz8 ohms4 watts (6 dBW)20 watts (13 dBW)Controlled dispersion

x 13W x 101/2D

Models also available,C)

ACOUSTATAcoustat Corp.3101 S.W. 1st TerraceFt. Lauderdale, Fla. 33315

Acoustat MonitorPrice $3,000/prDimensions 62H x 37W x 19D (pedestal); 83/4D

(top)Weight 110 lbs.Type Full -range electrostaticDrivers 4 full -range electrostatic drivers

per unitResponse 30 Hz to 20 kHz, +3 dB re 110 dB

SPL at 1 meterMin. power Contains integral amplifierControls Overall gain and high -frequency

gain (on amplifier)Features Integral self-contained servo -charge amplifiers specially designed for high -capacitance load characteristics of electrostatictransducers

Monitor ThreePrice $2,335

Dimensions 62H x 30W x 19DWeight 85 lbs.Type Full -range electrostaticDrivers 3 full -range electrostatic drivers

per unitResponse 30 Hz to 20 kHz, +3 dB re 110 dB

SPL at 1 meterControls Overall gain; high frequency gain

(on amplifier)

Models also availableMonitor Four, $3,000

ACOUSTIC 626Acoustic Control Corp.7949 Woodley Ave.Van Nuys, Calif. 91406


ResponseCrossoverImpedanceMin. powerMax. power

$31924H x 16W x 11D40 lbs.Vented12" woofer; 5" midrange; 31/2

dome tweeter35 Hz to 22 kHz, +3 dB1.2 kHz; '6 kHz4 ohms10 watts (10 dBW)100 watts (20 dBW) at 8 ohms

Controls Midrange; tweeterFeatures Circuit breaker protection for mi-drange and tweeter

Models also available648, $749

ACOUSTICAL ENGINEERINGAcoustical EngineeringP.O. Box 60221Sunnyvale, Calif. 94088

Mach IVPriceDimensionsWeightTypeDrivers

ResponseCrossoverImpedanceMin. powerMax. powerControlsFeatures

$99541H x 42W x 30D (at sides)150 lbs.Corner horn15" woofer; 8" midrange; two horntweeters16 Hz to 20 kHz, +5 dB400 Hz; 2.5 kHz8 ohms10 watts (10 dBW)100 watts (20 dBW)L -padWalnut finish with black grille cloth

Mini Corner HornPrice $495Dimensions 24H x 18W x 12D (at sides)Weight 75 lbs.

PriceDimensionsWeightTypeDrivers


TypeDrivers


Corner horn8" woofer; 4" midrange; horntweeter32 Hz to 18 kHz800 Hz; 5 kHz8 ohms10 watts (10 dBW)60 watts (17.75 dBW)L -padSame as Mach IV

Models also available5, $795 On flat black finish, $695);The "Mule", $295

ACOUSTI-PHASEAcousti-PhaseP.O. Box 207Proctorsville, Vt. 05153

Disco IIPrice $449.95Dimensions 29H x 18W x 15 V2DWeight 75 lbs.Type Bass reflexDrivers 15" woofer; 2 midrange horns; 4

super horn tweetersResponse 28 Hz to 30 kHz, +3 dBCrossover 900 Hz; 3 kHzImpedance 4 ohmsMin. power 20 watts (13 dBW)Max. power 200 watts (23 dBW)Features High -gloss black finish; side -mountcarrying handles; slide casters; accepts 1/4" phoneplug connection

PHASE III+Price $309.95Dimensions 25H x 15W x 14DWeight 47 lbs.Type Bass reflexDrivers 12" woofer; 5" midrange; 1" Mylar

dome tweeterResponse 32 Hz to 20 kHz, ±3 dBCrossover 700 Hz; 4.5 kHzImpedance 4 to 8 ohmsMin. power 10 watts (10 dBW) continuousMax. power 100 watts (20 dBW)Controls TweeterFeatures Circuit breaker; also available insolid -wood butcher -block cabinet for $359.95

Microphase$99.95171/2H x 101/2W x 8D19 lbs.Bass reflex61/2" woofer; 1" Mylar dometweeter48 Hz to 20 kHz, +4.5 dB1.6 kHz4 to 8 ohms5 watts (7 dBW)30 watts (14.75 dBW)

Iii High Fidelity's Buying Guide to Speaker Systems

Models also availablePhase II. $229 95, Phase Monitor,$189.95; Phase I, $139.95

ACOUSTIQUE 3AAcoustique 3A International,Inc.871 Montee de Liesse, St.LaurentMontreal, P.Q., Canada

TRIPHONIC SYSTEMS

ReferencePrice $2,900Dimensions 47H x 13W x 13DWeight 110 lbs.Type Acoustic pressure feedback biam-

plifiedDrivers Two 11" special woofers; 8" cone

and 2" dome midrange; Equiphaseflat ribbon tweeter

Response 20 Hz to 40 kHz, ±3 dB re 94 dBSPL at 1 meter at 1 watt

Crossover 150 Hz; 1.8 kHz; 6 kHzImpedance 100 ohmsControls Room -control adjustmentFeatures Preamplifier required; anechoic re-sponse supplied with speaker

TR-1000PriceDimensionsWeightTypeDriversResponseCrossoverImpedanceControls

Bass Module$1,80047H a 27W x 12D220 lbs.Acoustic pressure feedback

feedback woofers30 Hz to 100 kHz, +1.5 dB100 Hz400 ohmsRock/linear switch: efficiency ad-justment

Features Unit is in coffee-table configuration;includes 150 -watt (21.75 dBW) built-in amplifier,microphone, and VU meter

TR-800 Bass ModulePrice $1,300Dimensions 30H x 27W x 12DWeight 180 lbs.Type Acoustic pressure feedbackDrivers Two 11" special woofersResponse 30 Hz to 100 kHz, +1.5 dBCrossover 100 HzImpedance 400 ohmsControls Rock/linear switch; efficiency ad-

justmentFeatures Unit is in coffee-table configuration;includes 150 -watt (21.75 dBW) built-in amplifier,microphone, and VU meter

Atom 2 Triphonic SatellitePrice $606Dimensions 19H x 9W x 3DWeight 10 lbs.Type Peripheral laminar decompressionDrivers 8" midrange, flat -ribbon tweeterResponse 100 Hz to 40 kHz, +2 dBCrossover 6 kHzImpedance 8 ohmsMin. power 20 watts (13 dBW)Max. power 150 watts (21.75 dBW)Features Time -aligned; laminated backwave through flat tunnel

Andante Master ControlPrice $1,000Dimensions 18H x 12W x 7DWeight 50 lbs.

Type Acoustic pressure feedbackDrivers Flat ribbon tweeter; dome mi-

drange; 11" special wooferResponse 25 Hz to 40 kHz, +3 dB re 93 dB

SPL at 1 meter at 1 wattCrossover 400 Hz; 6 kHzImpedance 8 ohmsMin. power 5 watts (7 dBW)Max. power 100 watts (20 dBW)Controls Room control; 4 -position equalizerFeatures 125 watt (21 dBW) built-in am-plifier, anechoic response supplied with speaker

AllegroPriceDimensionsWeightTypeDrivers

$53937H x 13W x 13D100 lbs.Acoustic doublet (3A patent)Two 11" woofers; 6 3/4" cone mi-drange; 2 horn tweeters


Crossover 800 Hz, 6 kHzImpedance 8 ohmsMm. power 5 watts (7 dBW)Max. power 150 watts (21.75 dBW)Features High efficiency; anechoic responsesupplied with speaker

PreludePriceDimensionsWeightTypeDrivers

Response

CrossoverImpedanceMin. powerMax. powerControlsFeatures

$49918H x 12W x 8D44 lbs.Acoustic pressure feedback11" special woofer; 4" cone mi-drange; 3/4" ferrofluid tweeter40 Hz to 30 kHz, f 3 dB re 92 dBSPL at 1 meter at 1 watt800 Hz; 6 kHz8 ohms5 watts (7 dBW)80 watts (19 dBW)Room -control adjustmentAnechoic response supplied with

Allegretto Mk IIPrice $375

311-I x 12W x 12D34 lbs.Bass reflexWoofer; 10" horn midrange, horntweeter55 Hz to 22 kHz, +3 dB re 94 dBSPL at 1 meter at 1 watt1 5 kHz; 6 kHz8 ohms5 watts (7 dBW)80 watts (19 dBW)MidrangeControlled damping

sponse supplied with speaker

DimensionsWeightTypeDrivers

Response


AltoPriceDimensionsWeightTypeDrivers

anechoic re -

$21930H x 11W x 11D35 lbs.Acoustic doublet (3A patent)8" woofer; 8" midrange; piezoelec-tric tweeter

Response 50 Hz to 30 kHz, +3 dB re 95 dBSPL at 1 meter at 1 watt

Crossover 6 kHzImpedance 8 ohmsMm. power 5 watts (7 dBW)Max. power 60 watts (17.75 dBW)Features High efficiency; anechoic responsesupplied with speaker

Models also availableTR-1200 Bass Module, $1,665;Atom 3 Triphonic Satellite, $660/pr.; Andante Linear, $679; Adagio,$559; Apogee Monitor, $449,Auditorat, $299; Apogee Mk II,

$249; Alphase, $179

ACUSTA CRAFTAcusta CraftP.O. Box 12030Shawnee Mission, Kans. 66212

CV -19Price $285 (kit); $345 (assembled)Dimensions 44H x 161/2W x 12314DWeigh: 95 lbs.Type VentedDrivers 12" woofer; two 6" midrange driv-

ers; horn tweeterResponse 42 Hz to 15 kHz, +3 dB re 96 dB

SPL at 1 meter at 1 wattCrossover 400 Hz; 4 kHzImpedance 4 ohmsMin. power 20 watts (13 dBW)Max. power 200 watts (23 dBW)Controls NoneFeatures Constant -voltage crossover net-works

CVW-10 Bass ModulePriceDimensionsWeightTypeDrivesResponse

CrossoverImpeJanceMin. DowerMax. powerControlsFeatures

$259 (kit), $325 (assembled)211/2H 21W X 21D70 lbs.VentedTwo 10" woofers50 Hz to 100 Hz, +3 dB re 91 dBSPL at 1 meter at 1 watt100 Hz8 ohms20 watts (13 dBW)250 watts (24 dBW)NoneConstant -voltage crossover

CVS-3 Satellite PanelPrice $245 (kit); $310 (assembled)Dimensions 42H x 17W x 5,hDWeic ht 55 lbs.Type Acoustic suspensionDrivers 10" woofer; 6" midrange; horn

tweeterResponse 65 Hz to 15 kHz, ±3 dB re 91 dB

SPL at 1 meter at 1 wattCrossover 400 Hz; 4 kHzImpedance 8 ohmsMin. power 20 watts (13 dBW)Max. power 175 watts (22 dBW)Controls NoneFeatures Constant -voltage crossover net-works; slimline panel styling

CV -15Price $175 (vinyl kit); $199 (walnut kit);

$239 (walnut assembled)Dimensions 30H x 16Y2W x 113/eDWeight 60 lbs.Type VentedDrivers 10" woofer; 6" midrange; horn


SPL at 1 meter at 1 wattCrc ssover 400 Hz; 4 kHzImpedance 8 ohmsMir. power 20 watts (13 dBW)Mae. power 175 watts (22.5 dBW)Controls NoneFeatures Constant -voltage crossover net-works

CV -12Price


$95 (vinyl kit); $115 (walnut kit);$140 (walnut assembled)23V 4H x 15Y4W x 113/aD49 lbs.Vented10" woofer/midrange; 1" dometweeter

1980 Edition 37


Crossover 1 5 kHzImpedance 8 ohmsMin. power 15 watts (11.75 dBW)Max. power 100 watts (20 dBW)Controls NoneFeatures Constant -voltage crossover net-work

CVS-1 Satellite PanelPrice $75 (kit), $99 (assembled)Dimensions 12H x 8W x 51/2DWeight 12 lbs.Type Acoustic suspensionDrivers 6' woofer/midrange; 1" dome


SPL at 1 meter at 1 wattCrossover 2.5 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 50 watts (17 dBW)Controls NoneFeatures Constant -voltage crossover net-work, shmline panel styling

Models also availableCV -18, $285 (kit); $345 (assem-bled); CVW-12 Bass Module, $198(kit), $265 (assembled), CV -14,$129 (vinyl kit); $149 (walnut kit);$179 (walnut assembled); CVS-2Satellite Panel, $139 (kit); $169(assembled); Model 10, $69 (vinylkit), $80 (walnut kit); $105 (walnutassembled); Model 6, $65 (kit); $95(assembled)

ADCOMAdcom Co.11A Jules LaneNew Brunswick, N.J. 08901

GFW-1 SubwooferPrice $229.95 (vinyl); $289.95 (walnut)Dimensions 15 V2H x 17 %4W x 17 1/2DWeight 36 lbs.Type Infinite baffleDrivers 10' long -throw wooferResponse 22 Hz to 150 Hz. ±3 dB re 86 dB

SPL at 1 meter at 1 wattCrossover 150 HzImpedance 4 ohmsMin. power 20 watts (13 dBW)Max. power 120 watts (20.75 dBW)Features Two-way passive crossover builtin; terminals for input from amp and output to satel-lites; a phasing switch provided to increase installa-tion flexibility, compact, end -table styled

ADSAnalog & Digital Systems, Inc.One Progress WayWilmington, Mass. 01887

L-630PriceDimensionsWeightTypeDrivers

Response

CrossoverImpedanceMin. power

325

$285255/4H x 14 13/16W x 11314D42 lbs.Acoustic suspension1" soft -dome tweeter; 11/2 soft -

dome midrange; 10' woofer22 Hz to 22 kHz, ± 5 dB re 91 dBSPL at 1 meter at 1 watt650 Hz; 4 kHz8 ohms nominal, 6 ohms minimum20 watts (13 dBW)

Max. power 200 watts (23 dBW)Features Optional black metal base

520Price $150Dimensions 213/4H x 121/4W x 101/4DWeight 30 lbs.Type Acoustic suspensionDrivers 8' woofer; 1" soft -dome tweeterResponse 26 Hz to 22 kHz, ±5 dB re 91 dB

SPL at 1 meter at 1 wattCrossover 1.5 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 100 watts (20 dBW)Features Fused tweeter; drivers flush -

mounted

SERIES II

ADS 810PriceDimensionsWeightTypeDrivers

Response


$370251/2H x 141/4W x 113/4D46 lbs. 8 oz.Acoustic suspensionTwo 8" woofers; 2" soft -dome mi-drange; 3/4" soft -dome tweeter35 Hz to 23 kHz, ±3 dB; 20 Hz to30 kHz, ±5 dB550 Hz; 4 kHz6 ohms20 watts (13 dBW)200 watts (23 dBW)Optional speaker stand; drivers

flush -mounted for minimum diffraction

ADS 2002Price $470/pr.Dimensions 63/4H x 41/4W x 51hDWeightTypeDriversResponse

4 lbs. 8 oz.Acoustic suspension4" woofer; 1" soft -dome tweeter85 Hz to 17 kHz, ±3 dB; 55 Hz tc20 kHz, ±5 dB

Crossover 2.5 kHz (electronic)Impedance 47K ohmsMin. power 25 watts (14 dBW) continuous for

woofer; 5 watts (7 dBW) continu-ous for tweeter

Controls Tweeter levelFeatures Biamplified miniature speaker for12V operation (car) or home use with optionalpower supply (2002PS)

300CPriceDimensionsWeightTypeDriversResponse


$15081/2H x 53/4W x 51/4D7 lbs.Acoustic suspension51/4" woofer; 1" soft -dome tweeter40 Hz to 23 kHz, ±5 dB re 90 dBSPL at 1 meter at 1 watt2.5 kHz4 ohms5 watts (7 dBW)75 watts (18.75 dBW)Solid -aluminum miniature speak-

ers with swivel brackets for car installation

200CPrice $118Dimensions 63/1418H x 4Y4W x 41/2DWeight 4 lbs. 8 oz.Type Acoustic suspensionDrivers 4" woofer; 1" soft -dome tweeterResponse 85 Hz to 20 kHz, j-3 dB; 55 Hz to

22 kHz, ±5 dBCrossover 2.5 kHzImpedance 4 ohmsMin. power 5 watts (7 dBW)Max. power 50 watts (17 dBW)Features Solid -aluminum miniature speak-ers with swivel brackets for car installation; op-tional flush -mount kit (FMK)


CrossoverImpedanceMin. powerMax. powerFeaturesmounted

$11520H x 111/4W x 81/2D24 lbs.Acoustic suspension7" woofer; 1' soft -dome tweeter30 Hz to 22 kHz, ±5 dB re 91 dBSPL at 1 meter at 1 watt1.5 kHz8 ohms15 watts (11.75 dBW)75 watts (18.75 dBW)Fused tweeter; drivers flush -

Models also available620, $200, ADS 910, $720; ADS2001, $599/pr , ADS 710, $285;300, $145; ADS 200, $113

ADVENTAdvent Corp.195 Albany St.Cambridge, Mass. 02139

PoweredPriceDimensionsWeightTypeDriversCrossoverControls

Featurester

Advent$499283/4-1 x 141/8W x 13D70 lbs.Biamplified acoustic suspension10" woofer; 13/e" dome tweeter1.5 kHzInput sensitivity; bass boost (below100 Hz); treble boost and cut(above 3 kHz)Integral amplifier with infrasonic fil-

New AdventPrice

DimensionsWeightTypeDriversResponse

CrossoverMin. powerMax. powerControls

$179 (wood cabinet); $155 (vinyl -clad utility cabinet)255/eH x 141AW x 111/2D44 lbs.Acoustic suspension10" woofer; 13/4" dome tweeter30 Hz to 15 kHz, ± 3 dB re 89 dBSPL at 1 meter at 1 watt1.5 kHz15 watts (11.75 dBW) continuousAvailable upon request3 -way high -frequency balanceswitch

Advent/4 SystemPrice $178 to $188/pr.Dimensions 181/2H x 11W x 8DWeight 17 lbs. 9 oz.Type Acoustic suspensionDrivers 8" woofer; 15/2" tweeterResponse 55 Hz to 25 kHz, ± 3.5 dB re 89 dB

SPL at 1 meter at 1 wattCrossover 2.8 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 80 watts (19 dBW)Features Symmetrical offset tweeters; pack-aged in pairs

Advent/2PriceDimensionsWeightTypeDriversResponse

CrossoverImpedanceMin. powerMax. power

$89191/2H x 111/4W x 71/2D18 lbs. 4 oz.Acoustic suspension9" woofer; two 1514" cone tweeters40 Hz to 15 kHz, ± 5 dB re 88 dBSPL at 1 meter at 1 watt1.5 kHz8 ohms10 watts (10 dBW)Available upon request

High Fidelity's Buying Guide to Speaker Systems

Acculsb Modal 440

Powered Advent Loudspeaker

Models also availableAdvent/1, $120; (wood cabinet,$135), Advent/3, $65; 400, $35

AKAIAkai America, Ltd.2139 E. Del Amo Blvd.P.O. Box 6010Compton, Calif. 90224

SW -177 IIPrice $395Dimensions 27'/4H x 171/4W x 12'/4DWeight 46 lbsType DynamicDrivers 15" woofer; 51/4" midrange; two

13/4" tweetersResponse 25 Hz to 20 kHz, +3 dBCrossover 700 Hz; 5 kHzImpedance 8 ohmsMin. power 40 watts (16 dBW)Max. power 100 watts (20 dBW)Controls Midrange; tweeter

SW -137 IIPrice $200Dimensions 23'/4H x 13'/2W x 113/4DWeight 26 lbsType DynamicDrivers 10" woofer; 5" midrange 13/4"

tweeterResponse 40 Hz to 20 kHz, +3 dBCrossover 1 2 kHz; 5 kHzImpedance 8 ohmsMin. power 20 watts (13 dBW)Max. power 40 watts (16 dBW)Controls Midrange

SW -7PriceDimensionsWeightDriversResponseCrossoverImpedanceMax. power

$160/pr.

83/4H x 51/2W x 51/2D11 lbs /pr.5" woofer, 2" horn tweeter55 Hz to 22 kHz10 kHz4 ohms40 watts (16 dBW)

Models also availableSW -15711, $295, SW -127, $125, S-82, $90/pr

RICHARD ALLANRCS Audio International, Inc.1314 34th St., N.W.Washington, D.C. 20007

Monitor 80PriceDimensionsWeightTypeDrivers

ResponseCrossoverImpedanceMin. powerMax. powerFeatures

Acoustic Model 828

Richard Allan Monitor 80

$37526H x 12W x 111/4D31 lbs.Acoustic suspension10" Richard Allan woofer; 5" Rich-ard Allan midrange; 1- Richard Al-lan dome tweeter40 Hz to 20 kHz, + 3 dB1 kHz; 6 kHz8 ohms25 watts (14 dBW)80 watts (19 dBW)Walnut -veneer cabinet

Models also availableRA -8, $150

ALLISONAllison Acoustics, Inc.7 Tech CircleNatick, Mass. 01760

Allison: OnePrice $420DimensionsWeightTypeDrivers

Response


Max. powe

40H x 19W x 103/4D67 lbsDynamic; acoustic suspensionTwo 10" woofers, two 31/2" mi-drange units; two 1" tweetersComplete specifications availableon request350 Hz; 3 75 kHz8 ohms30 watts (14 75 dBW) per channelfor 100 dB SPLDepends on program material; 400watts (26 dBW)/channel ampsmay be used with music input

Controls Combined mid/high frequency bal-ance switch

Features Stabilized Radiation Loading- en-closure design; convex diaphragm mid and tweeterunits, full warranty for five years (c-wered by U Sand foreign patents)

The Electronic SubwooferPrice $290Dimensions 2H x 14'/4W x 43/eDFeatures Three low -frequency boost curveswith turnover (+3 dB) points at 35.5 Hz, 41 Hz, and48 Hz; infrasonic and ultrasonic filtars slope at 18dB/octave below 20 Hz and above 20 kHz: A -weighted S/N is better than 100 dB

Allison: FourPrice $195Dimensions 11H x 193/eW x 10)Weight 23 lbs , 8 oz

Mimeo 011W-1

Type Dynamic, acoustic suspensionDrivers 8" woofer; two 1" tweetersResponse Complete specifications available

on requestCrossover 2 kHzImpedance 8 ohmsMin. power 30 watts (14 75 dBW) per channel

for 100 dB SPLMax. power Depends on program material; 200

watts (23 dBW)/channel ampsmay be used with music input

Controls Combined mid/high-frequency bal-ance switch

Features Stabilized Radiation Loading- en-closure design; convex diaphragm tweeters; fullwarranty for five years (*covered by U S and for-eign patents)

Allison: SixPrice $125Dimensions 111/4H x 111/4W x 111/4DWeight 17 lbsType Dynamic, acoustic suspensionDrivers 8" woofer, 1" tweeterResponse Complete specifications available

on requestCrossover 2 kHzImpedance 4 ohmsMin. power 15 watts (11 75 dBW) per channel

re 97 dB SPLMas. power 150 watts (21 75 dBW)Cortrols High -frequency balance switchFeatures Stabilized Radiation Loading- en-closure design; convex diaphragm tweeter, fullwaranty for five years (*covered by U S and for-eigr patents)

Models also availableAllison Two, $350, Allison Three,$290, Allison: Five, $160

ALTEC LANSINGAltec Corp.1515 S. Manchester Ave.Anaheim, Calif. 92803

NineteenPriceDimensionsWeightTypeDr vers

ResponseCrossoverImpedanceMn. powerMax. power

$899 9539H x 30W x 21D143 lbsBass reflex; vented15" bass, compression drivermounted to sectoral horn with thenew Tangerine- Radial phase plug30 Hz to 20 kHz1 2 kHz8 ohms10 watts (10 dBW)65 watts (18 dBW)

1980 F:dition 39

Controls High/mid-frequency attenuatorFeatures Hand -rubbed oiled walnut or oak

LF-2 Universal SubwooferPrice $800 (approx )Drivers 12" bass driverCrossover 40 Hz; 60 Hz; 80 HzFeatures Electronic crossover; high -poweramplifier; new power control system: red lightwarns when power input is too high; power is au-tomatically reduced

FourteenPriceDimensionsWeightTypeDrivers

ResponseCrossoverImpedanceMin. powerMax. powerControls

$499.9530H x 21W x 16'/2D77 lbs.Bass reflex; vented12" bass driver with radial phaseplug; compression driver mountedto Mantaray constant -directivityhorn35 Hz to 20 kHz1.5 kHz8 ohms10 watts (10 dBW)75 watts (18.75 dBW)High/mid-frequency attenuator

Features Hand -rubbed oiled walnut, acousti-cally transparent black knit grille; automatic powercontrol to 200 watts (23 dBW)

Nine Series IIPrice $379.95Dimensions 261/2H x 171/2W x 15DWeight 56 lbs.Type Bass reflex; ventedDrivers 12" bass; 5" cone tweeter; 61/2"

mid -frequencyResponse 40 Hz to 20 kHz re 93 dB SPL at 1

meter at 1 wattCrossover 800 Hz; 7 kHzImpedance 8 ohmsMin. power 12 watts (10.75 dBW)Max. power 60 watts (17.75 dBW) continuousControls High/mid-frequency attenuatorFeatures Hand -rubbed oiled oak

Santana IIPrice $329.95Dimensions 19W x 253/4H x 16DWeight 57 lbs.Type Bass reflex; ventedDrivers 12" bass; 5" frame cone tweeterResponse 40 Hz to 20 kHzCrossover 2.5 kHzImpedance 8 ohmsMin. power 12 watts (10.75 dBW)Max. power 45 watts (16.5 dBW)Controls High -frequency attenuatorFeatures Hand -rubbed oiled walnut withcomposition slate top

One Series IIPrice $129.95Dimensions 211/2H 12W x 11DWeight 26 lbs.Type Acoustic suspension; sealedDrivers 8" bass; 4" cone tweeterResponse 50 Hz to 20 kHz, re 89 dB SPL at

1 meter at 1 wattCrossover 3.5 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 30 watts (14.75 dBW)Controls High -frequency attenuatorFeatures Hand -rubbed oiled walnut

Models also availableEighteen, $899 95, LF-1 UniversalSubwoofer, $500 (approx.); SevenSeries II, $279.95; Five Series II,$239.95; Three Series II, $189.95

AMERICAN ACOUSTICS LABAAL Speaker Systems629 W. Cermak RoadChicago, III. 60616

APOLLO SERIES

Apollo 8853Price $169Dimensions 37H x 13W x 11DWeight 39 lbs.Type PortedDrivers Two 8" foam surround woofers; 2"

cone phenolic ringResponse 25 Hz to 22 kHzCrossover 1 kHz; 5 kHzImpedance 16 ohmsMin. power 5 watts (7 dBW)Max. power 55 watts (17.5 dBW)

Apollo 2712Price $139Dimensions 27H x 16W x 11DWeight 36 lbs.TypeDrivers


Vented12" foam surround woofer; 5t/4"cone midrange; 2" cone phenolicring tweeter25 Hz to 22 kHz1 kHz; 5 kHz8 ohms5 watts (7 dBW)40 watts (16 dBW)Acoustiload Porting System

CLASSIC SERIES

Classic 120PriceDimensionsWeightTypeDrivers

ResponseCrossoverImpedanceMin. powerMax. powerControls and

tonal

Featuresthrough grilles

$36935H x 14W x 11058 lbs.Acoustic suspensionTwo 10" foam surround woofers; S-cone midrange; 3" cone tweeter25 Hz to 20 kHz1 kHz; 7 kHz16 ohms10 watts (10 dBW)120 watts (20.75 dBW)Front -mounted midrangetweeter controls for infinitebalanceWalnut veneer cabinet;white cones with molded frames

Classic 110PriceDimensionsWeightTypeDrivers

ResponseCrossoverImpedanceMm. powerMax. powerControls

see -

$23923H x 14W x 11D34 lbs.Acoustic suspension10" foam surround woofer; 5" conemidrange; 3" cone tweeter30 Hz to 20 kHz1 kHz; 7 kHz8 ohms10 watts (10 dBW)55 watts (17.5 dBW)Front -mounted midrange andtweeter controls for infinite tonalbalance

Features Walnut veneer cabinet; see-through grilles; white cones with molded frames

DISCO SERIES

Super JockPrice


ResponseCrossoverImpedanceMin. powerMax. powerFeatureslatched cover

57H x 24W x 28D205 lbs.Horn labyrinth15" accordion surround woofer; 8 x18 radial horn w/60 wt. compres-sion driver; four 3 -inch solid-statepiezoelectric tweeters30 Hz to 25 kHz1.2 kHz; 7 kHz8 ohms20 watts (13 dBW)300 watts (24.75 dBW)Vinyl -covered cabinet with front

PRO SERIES

PRO RH-9040Price $900Dimensions 41H x 19W x 32DWeightTypeResponseImpedanceMax. power

83 lbs.Direct radiating400 Hz to 10 kHz8 ohms100 watts (20 dBW)

PRO W-212Price $640Dimensions 28H x 48W x 20DWeight 140 lbs.Type Horn loadedDrivers Two 12" accordion surround woof-

ersResponse 40 Hz to 5 kHzImpedance 4 ohmsMax. power 200 watts (23 dBW)

PRO MT -70Price $450Dimensions 111/4H x 30W x 113/4DWeight 45 lbs.Type Direct radiatingResponse 1.2 kHz to 25 kHzImpedance 8 ohmsMax. power 60 watts (17.75 dBW)

Pro MA -14PriceDimensionsWeightTypeDriversResponseMax. power

$325111/4H x 30W x 113/4D38 lbs.Direct radiatingFourteen solid-state tweeters7 kHz to 25 kHz250 watts (24 dBW)

Pro MS -12Price $210Dimensions 23H x 16W x 16DWeight 35 lbs.Type Direct radiatingDrivers 12" accordion surround woofer; 3"

solid-state piezoelectric tweeterResponse 100 Hz to 20 kHzCrossover 5 kHzImpedance 8 ohmsMin. power 25 watts (14 dBW)Max. power 100 watts (20 dBW)

STUDIO SERIES

Studio 400Price $269Dimensions 35H x 141/2W x 11V 2DWeight 48 lbs.Type Acoustic suspensionDrivers Two 10" foam surround woofers;

51/4" cone midrange; 3" solid-statepiezoelectric supertweeter

Response 25 Hz to 25 kHzCrossover 1 kHz; 5 kHzImpedance 4 ohms


Min. powerMax. powerControls

10 watts (10 dBW)75 watts (18.75 dBW)Front -mounted midrange andtweeter controls for infinite tonalbalance

Studio 200Price $169

Studio 100Price $139Dimensions 221/2H x 121/2W x 9DWeight 23 lbs.Type Acoustic suspensionDrivers 8" foam surround woofer; 3" solid-

state piezoelectric supertweeterResponse 35 Hz to 25 kHzCrossover 4 kHzImpedance 8 ohmsMin. power 5 watts (7 dBW)Max. power 35 watts (15.5 dBW)Controls Front -mounted tweeter control for

infinite tonal balance

Models also availableApollo 2915, $179; Apollo 830,$69, Classic 112, $329; CLASSIC108, $169; Disco Tower, Series II,$450; PRO W-215, $875; PRO BH-15, $510; Pro MS -212, $370, ProSC -410, $320; Studio 500, $289;Studio 300. $219; Studio 50, $109

ARAcoustic Research10 American DriveNorwood, Mass. 02062

AR -14PriceDimensionsWeightTypeDriversResponse


Max. power

ControlsFeatures

$18025H x 14W x 103/4D35 lbs.Acoustic suspension10" woofer; 1" soft -dome tweeter44 Hz to 22 kHz, + 2 dB re 86 dBSPL at 1 meter at 1 watt1.3 kHz8 ohms15 watts (11.75 dBW) for 100 dBSPL in average 1,500 -cu. -ft roomSafe on normal speech and musicwith amplifiers of up to 100 watts(20 dBW) continuous power perchannel3 -position tweeterFull 5 -year warranty on perform -

VERTICAL SERIES

AR -90PriceDimensionsWeightTypeDrivers

Response


1980 Edition

$550433/sH x 141/2W x 15 13/16D82 lbs.Acoustic suspensionTwo 10" woofers facing sideways,8" lower midrange; 1W upper mi-drange; 3/4" tweeter32 Hz to 25 kHz, +2 dB re 87 dBSPL at 1 meter at 1 watt200 Hz; 1.2 kHz; 7.0 kHz4 ohmsSafe on normal speech and musicon amplifiers of up to 400 watts (26dBW) continuous power per chan-nel

Max. power Safe on normal speech and musicon amplifiers of up to 300 watts (25dBW) continuous power per chan-nel

Controls Lower midrange; upper midrange;high range (3 -position controls)

Features Full 5 -year warranty on perform-ance; designed with AR Acoustic Blanket '" to pre-vent sound interference caused by cabinetreflections

AR -91PriceDimensionsWeightTypeDrivers

Response


$400311/2H x 14W x 11 7/16053 lbs.Acoustic suspension12" woofer; 11/2" midrange; 3/4-

tweeter35 Hz to 25 kHz, I-2 dB re 87 dBSPL at 1 meter at 1 watt700 Hz; 7.5 kHz4 ohmsSafe on normal speech and musicon amplifiers of up to 400 watts (26dBW) continuous power per chan-nel

Max. power Safe on normal speech and musicon amplifiers of up to 200 watts (23dBW) continuous power per chan-nel

Controls Two 3 -position switches for mi-drange and high -range control

Features Full 5 -year warranty on perform-ance; designed with AR Acoustic Blanket' to pre-vent sound interference caused by cabinetreflections

Models also availableAR -25, $220/pr , AR -18, $78 ea(sold only in pairs), AR -9, $750.AR -92, $300

ARMSTRONGArmstrong Audio (U.S.A.) Inc.Sindell Organization11046 Santa Monica Blvd.Los Angeles, Calif. 90025

602Price


ResponseCrossoverImpedanceMin. powerMax. powerFeatureswork

$300 (walnut); $325 (teak); $350(rosewood)24H x 10W x 12D25 lbs.Resistive -loadedCone woofer; dome midrange;dome tweeter55 Hz to 20 kHz, +2 dB2.3 kHz; 7.5 kHz8 ohms25 watts (14 dBW)100 watts (20 dBW)Phase -corrected crossover net -

Models also available

AUDICOAudico, Inc.8900 Research Blvd.Austin, Tex. 78758

SW -B Monolith TL SubwooferPrice $1:00Dimensions 58H x 25W x 20DWeight 250 lbsType Transmission line

DriversResponse

CrosscverImpedanceMin. powerMax. power

Two 10" woofers14 Hz to 200 Hz, +2 dB re 93 dBSPL at 1 meter at 1 watt120 Hz6 ohms15 watts (11 75 dBW)400 watts (26 dBW)

Features Hand -tuned for optimum response,hand -rubbed wood veneer

A -10WPriceDimensionsWeigh:TypeDrivers

$26528H x 14W x 15D60 lbs.Vented10" woofer; 11/2" midrange dome;1" soft -dome tweeter

Response 39 Hz to 20 kHz, ±3.0 dB re 90 dBSPL at 1 meter at 1 watt

Cross Dyer 1.2 kHz; 6 kHzImpedance 8 ohmsMin. power 15 watts (11 75 dBW)Max. power 125 watts (21 dBW)Controls Midrange, tweeterFeatures Mirror -image pairs, Mylar capaci-tors, nand -rubbed wood veneer

A -10UPriceDimensionsWeightTypeDrive -s

Response

$22528H x 14W x 15D60 lbs.Vented10" woofer; 1Y2" midrange dome;1" soft -dome tweeter39 Hz to 20 kHz, +3 0 dB re 90 dBSPL at 1 meter at 1 watt

Crossover 1.2 kHz; 6 kHzImpedance B ohmsMin. power 15 watts (11.75 dBW)Max. power 125 watts (21 dBW)Controls Midrange; tweeterFeatures Mirror -image pairs; Mylar capaci-tors; utility finish

LF-BPriceDimensionsWeightTypeDrivers

$16122H x 131/2W x 93/4D40 lbs.Vented8" bass/midrange driver; 1" soft -dome tweeter


Crossover 2.8 kHzImpedance 8 ohmsMin. power 15 watts (11.75 dBW)Max. power 80 watts (19 dBW)Con.rols TweeterFeatures Mirror -image pairs, Mylar capaci-tors, stand included; hand -rubbed wood veneer;optimal integrated stand

Models also availableTDC 210 $449, TDC-110 $259A-10SA, $219, LF-A, $99

AudioPlateBarcus Berry, Inc.15461 Springdale St.Huntington Beach, Calif. 92649

Model 36 Add-on TweeterPrice $200/prDimensions 7H x 7W x 31/2DWeight 4 lbs. 8 oz.Type Non -inertial plateDrivers Dual Barcus-Berry Audio Plate'

driversResponse 2 kHz to 20 kHzImpedance 8 ohms

41

Min. power 0 5 watt (-3 dBW)Max. power 100 watts (20 dBW)Controls AttenuationFeatures Wide -area dispersion of high fre-quencies; designed to supplement or replacetweeter in existing speaker systems; can be addedto speaker system in minutes; no soldering or spe-cial tools needed; furnished in solid -walnut cabinet

AUDIO LAB CONSORTUnitronex Corp.1171 Landmeier RoadElk Grove Village, Ill. 60007

AL -60PriceDimensionsWeightTypeDrivers


Features

AL -20PriceDimensionsWeightTypeDrivers

ResponseImpedanceMin. powerMax. powerControls

$35926 4/5H x 17 3/10W x 12 3/5D61 lbs. 11 oz.Acoustic suspension12" cone woofer; 7" cone mi-drange; 1" wide dispersion phenolicdome tweeter32 Hz to 20 kHz300 Hz; 7 kHz8 ohms10 watts (10 dBW)140 watts (21.5) dBWTreble; midrange (3 -position switchfor normal or ±3 dB)Same as Model AL -40

$12921 3/10H x 11 3/5W x 9 1/10D21 lbs.Acoustic suspension8" woofer; 1" wide -dispersion phe-nolic dome tweeter60 Hz to 20 kHz8 ohms (nominal)10 watts (10 dBW)50 watts (17 dBW)Treble (3 -position switch for nor-mal +3 dB)

Models also availableAL -40, $259, AL -30, $159

AUDIO PROIntersearch, Inc.4720-0 Boston WayLanham, Md. 20801

A4-14PriceDimensionsWeightTypeDrivers

Response

CrossoverImpedanceMm. powerControlsFeatures

B2-50PriceDimensionsWeightType

Drivers

12

$1,600/pr.201/4H x 121/4W x 10V 2D35 lbs.&amplified, with built-in subwooferTwo 5" bass drivers; 41/2" mi-drange; 1" dome tweeter30 Hz to 20 kHz, ±3 dB re 96 dBSPL at 1 meter at 1 watt300 Hz; 2.5 kHz10K ohms1 )1 (-60 dBW)Volume; bass; bass blend; trebleAutomatic on/off

$795211/4H x 18 3/16W x 17 7/16D64 lbs.Subwoofer with built-in amplifierand variable crossover filtersTwo 61/2"

Response 20 Hz to 0.2 kHz, +0, -3 dB re 96dB SPL at 1 meter at 1 watt

Impedance 10K ohmsMin. power 0.25 microwatts (-6 dBW)Controls VolumeFeatures Separate crossover frequency forsubwoofer and satellites

AUDIO PULSEAudio Pulse Electronics, Inc.4323 North Arden DriveEl Monte, Calif. 91731

AP -52PriceDimensionsWeightTypeDrivers

ResponseImpedanceMin. powerMax. powerFeatures

$129/pr.191/2H x 11W x 7D15 lbs.Two-way ducted port6" high -excursion woofer/mi-drange; cone tweeter80 Hz to 20 kHz8 ohms10 watts (10 dBW)25 watts (14 dBW)Tilted components

Models also availableAP 10? $150/pr

AUDIOANALYSTAudioanalyst, Inc.South Main StreetP.O. Box 33Terryville, Conn. 06786

Phase Matrix M-12Price $800Dimensions 40H x 131/2W x 161/20Weight 115 lbs.Type Acoustic suspensionDrivers Two 10" woofers; three 41/2" mi-

drange drivers; three 1" soft -dometweeters; two 1/2" phase -match ul-tra -high frequency drivers


Crossover 200 Hz; 2 kHz; 15 kHzImpedance 4 ohmsMin. power 15 watts (11.75 dBW)Max. power 200 watts (23 dBW)Controls Midrange; tweeterFeatures Fused; incorporates AmbientPhase Recovery System, a totally passive imageenhancer, adjustable for near and far field listeningconditions; defeatable

Anthem ArrayPriceDimensions 4$45H992 15W x 15DWeight 92156.Type Staggered acoustic suspensionDrivers 10" subwoofer; 10" woofer; 41/2'

midrange; 1" dome tweeter; 3"piezoelectric tweeter

Response 30 Hz to 20 kHz, ±3 dB re 87 dBat 1 meter at 1 watt

Crossover 120 Hz; 450 Hz; 3 kHz: 12 kHzImpedance 8 ohmsMin. power 20 watts (13 dBW)Max. power 250 watts (24 dBW)Controls Midrange; tweeterFeatures Midrange fuse; tweeter fuse;piezoelectric output variable; uniform polar re-sponse at significant frequencies

M-8Price $399



271/2H x 151/2W x 113/4D56 lbs.Acoustic suspension12" woofer; 41/2" midrange driver;1" soft -dome tweeter; 1/2. phase -match high frequency27 Hz re 88 dB at 1 meter at 1 watt600 Hz; 2 kHz; 15 kHz8 ohms15 watts (11.75 dBW)200 watts (23 dBW)Midrange; tweeterFused

Phase Matrix B-1 subwooferPrice $279Dimensions 271/2H x 151/2W x 113/4DWeight 50 lbs.Type VentedDrivers 12" wooferResponse 22 Hz to 120 Hz, +3 dB re 89 dB

SPL at 1 meter at 1 wattCrossover 120 HzImpedance 4 ohmsMin. power 10 watts (10 dBW)Max. power 200 watts (23 dBW)Features Built-in crossover with direct -cou-pled bass matrix and level -compensating high-pass filter for upper speaker system

A-100XLPriceDimensionsWeightTypeDrivers

Response

CrossoverImpedanceMin. powerMax. powerControls

M-2PriceDimensionsWeightTypeDriversResponse


Models

$207243/4H x 133/4W x 12D41 lbs.Vented10" woofer; 2" midrange; 11/2"

tweeter40 Hz to 20 kHz, ± 3 dB re 90.5 dBat 1 meter at 1 watt1.5 kHz; 7.5 kHz8 ohms10 watts (10 dBW)150 watts (21.75 dBW)Midrange; tweeter

$14993/2H x 6W x 7D8 lbs.Acoustic suspension5" woofer; 1" soft -dome tweeter46 Hz to 20 kHz, ±4 dB re 89 dBat 1 meter at 1 watt2 kHz4 ohms10 watts (10 dBW)50 watts (17 dBW)Fused; adaptable for mobile use

also availableA-400XL, $359.95; A -200X,$339.95; M-6, $299; Phase MatrixM-5, $189; M -4V -II, $139; A-76XL,$117.95

AUDIOMARKETINGAudiomarketing, Ltd.652 Glenbrook RoadStamford, Conn. 06906

Super Red Studio MonitorPrice 51 115Dimensions 47H x 30W x 173/4DWeight 170 lbs.Type Infinite baffleDrivers 15" woofer with coaxial horn

tweeter; 15" subwooferResponse 40 Hz to 17 kHz, ±2 dB re 101 dB

SPL at 1 meter at 1 wattCrossover 100 Hz; 3 kHzImpedance 16 ohms


Min. powerMax. powerControlsFeaturesnetwork

Allison: Four Acoustic Ross/Arch AR -91

5 watts (7 dBW)160 watts (22 dBW)2 kHz shelving; 8 kHz shelvingMastering -lab frequency -dividing

Little Red Studio MonitorPrice $220Dimensions 24H x 16W x 12DWeight 45 lbs.Type Acoustic suspensionDrivers 12" woofer; W dome/cone

tweeterResponse 40 Hz to 18 kHz, +2 dB re 92 dB

SPL at 1 meter at 1 wattCrossover 2 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 50 watts (17 dBW)Controls 2 kHz peak/dip; 8 kHz shelvingFeatures Frequency -dividing network

Models also availableBig Red Studio Monitor, $816

AUDIONICSAudionics, Inc.10950 S.W. 5th Ave.Beaverton, Ore. 97005

LO -2 Foundation BassPrice $600Dimensions 25H x 18W x 31DWeight 110 lbs.Type VentedDrivers Two 10" push-pullResponse 32 Hz to 400 Hz, ±3 dB re 89 dB

SPL at 1 meter at 1 wattCrossover 125 HzImpedance 7 ohmsMin. power 70 watts (18.5 dBW)Max. power 400 watts (26 dBW)Controls Crossover bypassFeatures Push-pull woofers cancel dynamicIM and harmonic distortion; interchangeable ventsfor Bessel, 08 3, and 86 alignments (86: f3=18Hz)

LO -2 Vanishing PointPrice $350Dimensions 14H x 9W x 9DWeight 25 lbs.Type Acoustic suspensionDrivers 61/2" polymer -saturated cone; 1"

damped domeResponse 75 Hz to 20 kHz, +1.5 dB re 88 dB

SPL at 1 meter at 1 wattCrossover 3 kHzImpedance 7 ohms

Audio Lab Coaled AL -60

MM. power 35 watts (15.5 dBW)Max. power 200 watts (23 dBW)Controls Tweeter L -pad; midwoofer L -pad

controls level and CI of bass (.7 to1.4)

Features Minimum time and space spread;Mylar/air-core crossover; resistive load at ultra-sonic frequencies for low amp TIM

AUDIOTEXGC Electronics400 South Wyman St.Rockford, III. 61101

94-1400PriceDimensionsWeightTypeDrivers

$10024H x 15W x 95/eD29 lbs.Acoustic suspension12' woofer; 13/4' tweeter; 4I/2" mi-drange

Response 35 Hz to 20 kHzCrossover 2.5 kHz; 5 kHzImpedance 8 ohmsMin. power 8 watts (9 dBW)Max. power 45 watts (16.5 dBW)Features Aluminum voice coil; multi -rollfoam surround

94-1200PriceDimensionsWeightTypeDriversResponseCrossoverImpedanceMM. power

$60183/4H x 111/4W x 7D14 lbs.Acoustic suspension8" woofer; 13/4" tweeter45 Hz to 20 kHz5 kHz8 ohms2 watts (3 dBW)

Max. power 25 watts (14 dBW)Features Aluminum voice coil;foam surround

Audis Pulse AP -82

sas SM-260

Type Acoustic suspensionDrivers 12" woofer; 2" dome midrange; 2"

dome tweeterResponse 35 Hz to 20 kHz, ±3 dB re 88 dB

SPL at 1 meter at 1 wattCrossover 575 Hz; 5 kHzImpedance 8 ohmsMM. power 15 watts (11.75 dBW)Max. power 250 watts (24 dBW)Controls Midrange; tweeterFeatures Auto -reset overload protective cir-cuit; full 5 -year warranty; Minimum DiffractionLoudspeaker' design; magnetic fluids for mi-drarge and tweeter

102aPriceDimensionsWeightTypeDriversResponseCrossover

$18525H x 15W x 93/eD38 lbs.Acoustic suspension10" woofer; 1" dome tweeter44 Hz to 18 kHz, f 3 dB2.2 kHz

Impedance 8 ohmsMir.. power 15 watts (11.75 dBW)Max. power 100 watts (20 dBW)Controls Tweeter controlFeatures Fused tweeter; full 5 -year war-ranty; Minimum Diffraction Loudspeaker' design

$95191/2H x 12W x 81/2D18 lbs.Acoustic suspension8" woofer; 13/4" cone tweeter55 Hz to 17 kHz, ±3.5 dB re 89 dBSPL at 1 meter at 1 watt

Crossover 3 kHzImpedance 8 ohms nominal; 7 ohms minimumMM. power 8 watts (9 dBW)Max. power 60 watts (17.75 dBW)Features Full 5 -year warranty; Minimum Dif-

multi-roll fraction Loudspeaker' design

Models also available94-1350, $90 94-1300, $70

AVIDAvid Corp.10 Tripps LaneEast Providence, R.I. 02914

330Price $400Dimensions 301/4H x 17W x 101/4DWeight 66 lbs

80aPriceDimensionsWeightTypeDryersResponse

Models also available230, $225, 110, $135

BANG & OLUFSENBang & Olufsen515 Busse RoadElk Grove Village, III. 60007

Beovox Phase -Link M100-2Price $1,400/pr. (including stands)Dimensions 293/4H x 153/eW x 12DWeight 60 lbs. 8 oz.Type Vented

1980 Edition 43

Drivers 12" bass; 4" phase -link filler driver:21/2" dome midrange; 11/2" dometweeter; 3/4" dome supertweeter

Response 35 Hz to 22 kHz, ±4 dBCrossover 500 Hz; 2.5 kHz; 8 kHzImpedance 4 ohmsMin. power 20 watts (13 dBW)Max. power 100 watts (20 dBW) continuousControls Tilt angle and heightFeatures Electronic protection circuit; linearphase response; rosewood veneer finish

Beovox Phase -Link S-75PriceDimensionsWeightTypeDrivers


$570/pr231/8H x 211/2W x 93/4D24 lbs. 3 oz.Pressure chamber10" woofer; 5" phase -link filler; 2dome midrange; 1" dome tweeter42 Hz to 20 kHz, ±4 dB700 Hz; 4 kHz4 ohms20 watts (13 dBW)75 watts (18.75 dBW) continuousOptional floor stands and wall

mount brackets; linear phase response/ rosewoodfinish standard, oak, teak, or white optional

Beovox C-75Price $395/pr.

DimensionsWeightTypeDriversResponseCrossoverImpedanceMin. powerMax. powerFeatures

12 3/16H x 4 3/16W x 7 13/16011 lbs.Log line loadingTwo 4" woofers; 1" dome tweeter75 Hz to 20 kHz, +4 dB2.5 kHz6 ohms10 watts (10 dBW)70 watts (18.5 dBW)Log line loading to minimize envi

ronmentally caused acoustic problems from smallrooms; linear phase response; black or brushedaluminum finish

Phase -Link P-30PriceDimensionsWeightTypeDriversResponseCrossoverImpedance

$330/pr211/4H x 111/2W x11 lbs.Pressure chamber61/2" bass; 1" dome tweeter58 Hz to 20 kHz, ±4 dB3 kHz4 ohms

Mm. power 10 watts (10 dBW) continuousMax. power 30 watts (14.75 dBW) continuousFeatures Wall -mounting panel speaker; lin-ear phase response; rosewood finish standard,white or oak optional

45, $450/pr , Phase -Link S-45/2,$338/pr.; Beovox C-40, $295/pr

BELLES RESEARCHBelles Research Corp.A-1 Country Club Rd.P.O. Box 65East Rochester, N.Y. 14445

Belles 1PriceDimensionsWeightTypeDrivers


Features

$445333/4H x 15W x 171/4D69 lbs.Free Field System8" cone woofer; 10" cone passiveradiator; dome tweeter30 Hz to 20 kHz2.7 kHz (18 dB/octave)8 ohms40 watts (16 dBW)200 watts (23 dBW)L -pad for high -frequency attenua-tionChamfered -edge baffle board for

low diffraction; free -field suspended tweeter; rear -mounted passive radiator; binding post input termi-nals; system protection fuse walnut stand included

B.E.S. GEOSTATICBertagni ElectroacousticSystems, Inc.345 Fischer St.Costa Mesa, Calif. 92626

D -190WPriceDimensionsWeightType

$649401/2H x 26W x 33/4D60 lbs.Two low -mass, polymer dia-phragms activated by drivers con-taining acoustic hammers

Drivers Five (two with ferrous oil)Response 35 Hz to 20 kHzCrossover 1 kHz; 4 kHz; 10 kHzImpedance 4 ohmsMin. power 30 watts (14.75 dBW)Max. power 250 watts (24 dBW)Controls Mid- and high -frequencyFeatures Total radiating surface of 1,700 sq.in.; dual modules framed in aluminum and woodhousing

Beovox Phase -Link S-40Price $200/ pr

SM-270PriceDimensions

$33927 11/64H 21 11/64 x 6D

Dimensions 183/4H x 101/4W x 73/4D Weight 41 lbs.Weight 13 lbs. 3 oz. Type Single pulsating plane diaphragmType Pressure chamber Drivers Two permanent magnet/voice coilDrivers 8" woofer; 1" dome tweeter drivers; piezoelectric tweeterResponse 49 Hz to 20 kHz, ±4 dB Response 32 Hz to 22 kHz re 91 dB SPL at 1Crossover 3 kHz meter at 1 wattImpedance 4 ohms Crossover 800 Hz; 10 kHzMin. power 10 watts (10 dBW) Impedance 8 ohmsMax. power 40 watts (16 dBW) continuous Min. power 10 watts (10 dBW)Features Bookshelf or wall mount; linear Max. power 200 watts (23 dBW)phase response; rosewood veneer finish Controls Midrange; tweeter

Features 360 degree omnipolar dispersion;

Models also availableBeovox Phase -Link M-75, $980/pr.(including stands); Phase -Link P-

A Note on PricesPrices shown in these pages aremanufacturers' or importers' nation-ally advertised values, updated as isfeasible by press time.

850-sq. in. radiating surface; resettable circuit pro-tector

SM-260PriceDimensionsWeightTypeDrivers

Response

Crossover

$24926 7/32H x 20 7/32W x 5D35 lbs.Single pulsating plane diaphragmTwo permanent magnet/voice coildrivers; piezoelectric tweeter38 Hz to 22 kHz re 88 dB SPL at 1meter at 1 watt800 Hz; 10 kHz

Impedance 8 ohmsMin. power 5 watts (7 dBW)Max. power 150 watts (21.75 dBW)Controls Midrange; tweeterFeatures 360 -degree omnipolar dispersion;850-sq. in. radiating surface; resettable circuit pro-tector

Models also availableD -280W, $997, D -120W, $599;SM-250, $169

BEVERIDGE ELECTROSTATICSPEAKER SYSTEMSHarold Beveridge, Inc.505 E. Montecito St.Santa Barbara, Calif. 93103

System 2SW-2Price $7,000/pr. (including direct -drive

tube amplifiers for electrostatics,electronic crossovers, and solid-state amplifiers for subwoofers)

Dimensions 78H x 24W x 16D (electrostaticloudspeakers); 26H x 161/2W x 22D(subwoofers)

Weight 360 lbs.Type Electrostatic and dynamic sub -

wooferDrivers Electrostatic above 100 Hz; dy-

namic below 100 HzResponse 20 Hz to 20 kHz, ±3 dBCrossover 100 HzControls Beveridge control module; spec-

trum slope; bass environmentaland lateral controls

Features Cylindrical sound emission from asingle line source, 100 Hz to 18 kHz; subwoofers,one with each electrostatic loudspeaker, operatingbelow 100 Hz

Models also availableSystem 3. $3.500

B.I.C.B.I.C./AvnetSouth Service RoadWestbury, N.Y. 11590

TPR-600PriceDimensionsWeightTypeDrivers

$369.95411/2H x 15,AIW x 151/4D67 lbs.Venturi loaded12" subwoofer; 11/2" compressionmidrange; piezoelectric tweeter

Response 93 dB SPL at 1 meter at 1 wattImpedance 6 to 8 ohmsMin. power 3 watts (4.75 dBW)Max. power 130 watts (21 dBW)Features Total Power Radiation; non -criticalspeaker placement; finished on all four sides; see-through black grille supplied

B66PriceDimensionsWeightTypeDrivers


$269261/4H x 153/4W x 131/2D53 lbs. 8 oz.Venturi loaded12" woofer; 5" cone midrange; two1I/2" dome tweeters93 dB SPL at 1 meter at 1 watt400 Hz; 10 kHz6 ohms3 watts (4.75 dBW)100 watts (20 dBW)Tonal balance


Features Each driver individually fused; non -reflective, totally sound -transparent grille; furni-ture -grade walnut finish

TPR-200PriceDimensionsWeightTypeDrivers

$219 95323/4H x 111W x 11'/4D37 lbsVenturi loaded8" subwoofer; 11/2" compressionmidrange; piezoelectric tweeter

Response 90 dB SPL at 1 meter at 1 wattImpedance 8 ohmsMm. power 5 watts (7 dBW)Max. power 75 watts (18 75 dBW)Features Total Power Radiation; non -criticalspeaker placement; finished on all four sides; see-through black grille supplied

B11PriceDimensionsWeightTypeDriversResponseCrossoverImpedanceMin. power 10 watts (10 dBW)Max. power 45 watts (16.5 dBW)Features Each driver individually fused; non -reflective, totally sound transparent grille; scuff re-sistant walnut -grain finish

$8518'/2H x 11W x 9D19 lbsVenturi loaded8" woofer, 2' dome tweeter87 dB SPL at 1 meter at 1 watt2 kHz8 ohms

Models also availableTPR-400, $299 95, B44, $179.95,B22, $135

BLACK BOXMatrecs Industries805 Woodman Ave.Winslow, III. 61089

MA -BBPriceDimensionsWeightTypeDrivers


$1259H x 6W x 5D5 lbs 8 oz.Acoustic suspension41/2" woofer. 21/2' piezoelectrictweeter50 Hz to 22 kHz2.5 kHz4 ohms2 watts (3 dBW)50 watts (17 dBW)Real wood enclosure

BMLBML Electronics, Inc.5305 N. Ravenswood Ave.Chicago, III. 60640

Sound Odyssey/Tracer 2001Price $879Dimensions 64H x 26W x 8DWeight 140 lbsType Combination dual -phase coupling/

7th order ButterworthDrivers 8t/2" woofer with two 51/2" bass

radiators; two solid-state tweetersResponse 35 Hz to 20 kHz, + 3 dB re 93 dB

SPL at 1 meter at 1 wattCrossover 450 Hz; 1 5 kHz; 4 5 kHzImpedance 5/4 ohmsMin. power 40 watts (16 dBW)Max. power 350 watts (25 5 dBW)Features Planar column design; fuse -pro-tected, 9 terminated transmission line; 7 tunedchambers

Model TenPrice $120Dimensions 22H x 11W x 8DWeightTypeDriversResponse


24 lbsTuned port8" woofer; 21/2'VHF tweeter53 Hz to 20 kHz, + 5 dB re 94 dBSPL at 1 meter at 1 watt35 kHz5 or 6 ohms5 watts (7 dBW)100 watts (20 dBW)

Models also availableSound Window/Tracer$349. Model Eleven, $199

BOSEBose Corp.100 The Mountain RoadFramingham, Mass. 01701

1001,

901 Series IVPrice $859/pr. (includes equalizer)Dimensions 123/8H x 21W x 13DWeight 45 lbs 8 ozType Acoustic MatrixDrivers 9 full -range drivers with helical

voice coilsImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. powe- No limitation for non-commercial

applicationsControls Active equalizer for low- and high -

frequency compensation controlsFeatures Direct/Reflecting'" design; activeequalization



$424/pr.

24H x 14'/2W x 141/2042 lbs.Acoustic suspensionTwo 3'/2" cone tweeters; 10"woofer1 5 kHz; 3 kHz4 ohms15 watts (11 75 dBW) continuous100 watts (20 dBW) continuousDirect energy control adjusts ratioof reflected to direct sound forgreater spatial balance

Features Floor -standing Direct/Reflecting"speaker, uses a direct -radiating woofer and twotweeters for rear and side sound radiation; utilizesasymmetrical design

lnteraudio Model 1Price St 68/prDimensions 14H x 9W x 7DWeight 14 lbs 8 ozType PortedDrNers 6" woofer 2" tweeterCrossover 2.2 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 60 watts (17 75 dBW)Features Compact bookshelf designed forflat total power radiation, clarity, and detail

Models also available601, $599/pr, , 301 BookshelfSpeaker, $242/pr

BOSTON ACOUSTICSBoston Acoustics, Inc.130 Condor St.E. Boston, Mass. 02128

A-200PriceDIME nsionsWeic htTypeDriversCrossoverImpedance

$350411/2H x 21W x 63/4D58 lbsAcoustic suspensionWoofer; midrange; tweeter450 Hz; 3 kHz8 ohms

Min. power 16 watts (12 dBW)Max power 150 watts (21.75 dBW)Features Designed to operate as part of aroom by integrating with the wall and floor withsimple and convenient placement; relatively flatimpedence curve makes it an easy load to drive

BOZAKBozak, Inc.587 Connecticut Ave.Norwalk, Conn. 06854

CS -310B Concert GrandPrice Contemporary cabinet; $1,260;

classic cabinet (CS-410CL);$1,350; Moorish cabinet (CS -410M), $1,375

Dimensions 52H x 36W x 19DWe ght 225 lbs.Type Infinite baffleDrirers Four 12" woofers; two 61/2" mi-

drange; eight 2" tweetersResponse 28 Hz to 20 kHzCrossover 400 Hz; 2.5 kHzImpedance 8 ohms (nominal)Mir. power 60 watts (17.75 dBW)Max. power 150 watts (21.25 dBW)Fee tures Factory -equipped for conventionalor biamp operation

CS -4000A Symphony No. 1Prize Modern cabinet, $750; classic

cabinet, $860; moorish cabinet,$890

Dimensions 44'/2H x 26'/4W x 151/4DWE ight 165 lbsTy Je Infinite baffleDrivers Two 12" variable density woofers;

61/2" aluminum -cone midrange;eight 2" aluminum -cone tweeters

Response 35 Hz to 20 kHzCrossover 400 Hz; 2.5 kHzImpedance 8 ohmsMil. power 50 watts (17 dBW)Me x. power 100 watts (20 dBW)Features Factory equipped for conventionalor biamp operation

CS -501A Concerto 7Pnce $450Dimensions 32H x 193/4W x 16DWeight 95 lbs.Twe Infinite baffleDrivers 12" variable density woofer; 61/2"

aluminum -cone midrange; three 2"aluminum -cone tweeters

Response 35 Hz to 20 kHzCrossover 800 Hz; 2.5 kHzM n. power 20 watts (13 dBW)Max. power 75 watts (18.75 dBW)Controls Tweeter

B-1002 BardP -iceD mensionsV eightT ,rpeDrivers

ResponseCrossoverImpedance

$15921H x 12W x 18 diameter25 lbsInfinite baffle8" aluminum -cone bass/midrange;2" aluminum -cone tweeter50 Hz to 20 kHz1.8 kHz8 ohms (nominal)

1980 Edition 45

Min. power 12 watts (10.75 dBW)Max. power 60 watts (17.75 dBW)Features Completely weatherproofed; alsosuitable for indoor use

Models also availableCS -4005A Symphony No. 2, Cen-tury cabinet, $750; LS -400A, $300:LS -250A, $195; LS -70A, $195

BRAUNAdcom Co.11A Jules LaneNew Brunswick, N.J. 08901

LW -1 SubwooferPrice $700


$958/pr.121/4H x 271/2W x 101/4D42 lbs. ea.Acoustic suspension10" high -compliance, long -throwwoofer; 2" mid -hemisphericaldome; 3/4" hemispherical wide -dis-persion dome tweeter

Response 20 Hz to 25 kHzCrossover 500 Hz; 3 kHzImpedance 8 ohmsMin. power 25 watts (14 dBW)Max. power 100/140 watts (20/21.5 dBW)Features Genuine walnut veneer with blackaluminum grille curved corners on cabinet; highlysophisticated, computer -designed crossover; win-ner of 1978 CES Design and Engineering Award

SM-1004Price $379

SM-1003Price

SM-1002Price

Output CPriceDimensionsWeightTypeDrivers

Response


$339

$578/pr.

$249/pr.63/4H x 41/4W x 43/4D14 lbs.Acoustic suspension minispeaker4" long -throw high -compliancewoofer; 1" hemispherical wide-dispersion dome tweeter50 Hz to 25 kHz, 90 dB SPL at 1

meter at 1 watt1.5 kHz8 ohms10 watts (10 dBW)35/50 watts (15.5/17 dBW)

Features Aluminum cabinet; computer -de-signed filter network

Models also availableL-300, $429/pr . L-200. $289

B & WAnglo-American AudioBox 653Buffalo, N.Y. 14240

801PriceDimensionsWeight

46

$1,27537 9/10H x 17 3/10W x 22 2/5D97 lbs.

TypeDriversResponse

Min. powerControls

Features

DM -7PriceDimensionsWeightTypeDriversResponse


Acoustic suspensionBass; midrange; tweeter45 Hz to 20 kHz, +2 dB re 85 dBSPL at 1 meter at 1 watt50 watts (17 dBW)Mid for 1 to 3 kHz; high for over 3kHzElectron overload protect circuit

$63535 7/16H x 10 11/16W x 15D64 lbs.Passive radiatorWoofer; tweeter30 Hz to 25 kHz, +2 dB re 40 dBat 2 meters3 kHz8 ohms50 watts (17 dBW)200 watts (23 dBW) continuous

Controls Bass; midrange; tweeterFeatures Linear -phase stepped positioningof drivers; third -order Butterworth high- and low-pass characteristics in crossover

DM -4PriceDimensionsWeightTypeDrivers


$27521H x 10W x 10D24 lbs. 8 oz.VentedWoofer/midrange; tweeter; supert-weeter80 Hz to 20 kHz, +5 dB2.5 kHz; 14 kHz8 ohms10 watts (10 dBW)50 watts (17 dBW)Fused

Models also availableDM -6, $735 DM2/II, $485; DM -5,$186

CANTONAdcom Co.11A Jules LaneNew Brunswick, N.J. 08901

GLE-100Price

GLE-70Price

Gamma 800LPrice

GLE-60Price $259

GLE-45Price $165

GLE-40PriceDimensionsWeightTypeDrivers


$250/pr.7 1/5H x 10 3/5W x 6D9 lbs.Acoustic suspension6 3/10" long -throw woofer in lightmetal die-cast basket; 3/4" dometweeter42 Hz to 30 kHz1.4 kHz4 to 8 ohms10 watts (10 dBW)45/60 watts (16.5/17.75 dBW)

Models also availables..,

C.C.L.C.C.L. Enterprises, Inc.30682 San Antonio St.Haywood, Calif. 94544


Response


$499.50421/2H x 231/4W x 121/4D60 lbs.Infinite baffleTwo 10" woofers; 8" mid bass; 2"soft -dome midrange; 1" textiledome tweeter22 Hz to 20 kHz, 91 dB SPL at 1meter at 1 watt125 Hz; 700 Hz; 5 kHz4 ohms30 watts (14.75 dBW)300 watts (24.75 dBW)Midrange; tweeterRoll -away casters

2000 SubwooferPriceDimensionsWeightTypeDriversResponse


$289 50221/4H x 251/2W x 151/4D45 lbs.Infinite baffleTwo 10" woofers22 Hz to 150 kHz, 90 dB SPL at 1meter at 1 watt150 Hz8 ohms25 watts (14 dBW)300 watts (24.75 dBW)

2200 SatellitePrice $104.50Dimensions 13H x 8W x 6DWeight 10 lbs.Type Air suspensionDrivers 5" woofer; 1" textile domeResponse 65 Hz to 20 kHz, 90 dB SPL at 1

meter at 1 wattCrossoverImpedanceMin. powerMax. power

2.2 kHz8 ohms10 watts (10 dBW)50 watts (17 dBW)

Models also available"1400 S:149

.41,Y) $124 -,(1

CELESTIONCelestion Industries, Inc.Kuniholm Drive, Box 521Holliston, Mass. 01746

S2`.,4 50.

Ditton 662Price $749.50Dimensions 415/4H x 153/4W x 11 13/16DWeight 74 lbs. 13 oz.Type Passive radiatorDrivers 12" woofer; 2" dome midrange; 1"

dome tweeterResponse 38 Hz to 20 kHz, +3 dB re 90 dB

SPL at 1 meter at 2.9 wattsCrossover 700 Hz; 4.5 kHzImpedance 8 ohmsMin. power 20 watts (13 dBW)Max. power 160 watts (22 dBW)Features Fused tweeter; mirror imaged

Ditton 442PriceDimensionsWeightType

$449.5030H x 153/4W x 11 7/16D52 lbs. 13 oz.Acoustic suspension


&overkill* 2SW

Drivers

Response


Ditton 44PriceDimensionsWeightTypeDrivers


Max. power

Boston Acoustics A-200

12" woofer; 6" cone midrange; 1'dome tweeter45 Hz to 20 kHz, ±3 dB re 90 dBSPL at 1 meter at 2.95 watts600 Hz; 4.5 kHz8 ohms20 watts (13 dBW)120 watts (20.75 dBW)Fused; mirror -imaged pairs

$359.5030H x 141/2W x 10D44 lbs. 14 oz.Acoustic suspension12" woofer; 6" cone midrange; 1"dome tweeter25 Hz to 40 kHz500 Hz; 5 kHz4 to 8 ohms10 watts (10 dBW)100 watts (20 dBW)

Ditton 15XRPriceDimensionsWeightTypeDriversResponseCrossoverImpedanceMm powerMax. power

$189.5021H x 91/2W x 91AD16 lbs. 11 oz.Passive radiator8" woofer; 1.25" pressure tweeter30 Hz to 15 kHz2.5 kHz4 to 8 ohms10 watts (10 dBW)60 watts (17.75 dBW)

Models also availableDitton 551, $499.50; Ditton 332,$369.50; Ditton 33, $299.50; UL -6,$234.50

CENTREXPioneer Electronics of America1925 East Dominguez St.Long Beach, Calif. 90810

CL -100PriceDimensionsWeightTypeDrivers

$259.95/pr.

25H x 151/2W x 12 4/5D80 lbs. 8 oz./pr.Bass reflex12" woofer; 4" midrange; 21/2"

tweeterResponse 40 Hz to 20 kHz re 92 dB SPL at 1

meter at 1 wattImpedance 8 ohmsMax. power 70 watts (18.5 dBW)Features Removable, acoustically trans-parent knit grille; walnut cabinet

Corwin -Yoga 12711

MCL-3PriceDimensionsWeightTypeDriversResponse

ImpedanceMax. powerFeatures

Custom Cron

$219.95/pr15H x 83/4W x 81/4D28 lb. 10 oz./pr.Bass reflex61/2" woofer; 1" dome tweeter60 Hz to 20 kHz re 90 dB SPL at 1meter at 1 watt6.3 ohms50 watts (17 dBW)Mini -sized; rosewood grained cabi-

Models also availableCL -70, $179.95/pr.; CL -40,$129 95/pr.

CENTURYGeneral Audio Corp.3504 HillcroftHouston, Texas 77008

Century 670Price $299.95Dimensions 251/2H x 20W x 171/2DWeightTypeDrivers

ResponseCrossoverImpedanceMm. powerMax. power

55 lbs.Ducted tuned port, bass reflex15" bass driver; Oh' frame conedriver; two 31/2" phenolic ringtweeter20 Hz to 20 kHz900 Hz; 4 kHz; 6 kHz8 ohms10 watts (10 dBW)80 watts (19 dBW)

Century 370Price $199.95Dimensions 23H x 14W x 10DWeight 29 lbs.Type Ducted tuned port, bass reflexDrivers 10" bass driver; 41/2" frame cone

driver; 31/2" phenolic ring tweeterResponse 25 Hz to 20 kHzCrossover 1 kHz; 3.5 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 40 watts (16 dBW)

Models also availableCentury 470, $229.95

CERWIN-VEGACerwin-Vega12250 Montague St.Arleta, Calif. 91331

18SWPriceTypeDriversResponse

ImpedanceMm. powerMax. powerFeatures

12TRPriceDimensionsWeightTypeDrivers

Dahlqulet 1:00-10

$600Ported reflex18" stroker bass driver25 Hz to 250 Hz, ±4 dB re 100 dBSPL at 1 meter at 1 watt4 ohms5 watts (7 dBW)300 watts (24.75 dBW)Subwoofer with high output

$47040H x 13 1/2W x 131/2D75 lbs.Ported reflex12" woofer; 61/2" cone midrange;rear reflecting horn -tweeter; super-Dhorm tweeter

Response 28 Hz to 20 kHz, ±4 dB re 102 dBat 1 meter at 1 watt

Crossover 250 Hz; 4 kHzImpedance 8 ohmsMin. power 5 watts (7 dBW)Max. power 100 watts (20 dBW) continuousControls Midrange; tweeter; rear hornFeatures Tower -style speaker with rear re-flectrtg horn

15SWPriceTypeDriversResponse

ImpedanceMm powerMax. powerFeatures

A-123PriceDimensionsWeightTypeDrivers

$380Ported reflex15" cone bass30 Hz to 250 Hz, ±4 dB re 100 dBSPL at 1 meter at 1 watt8 ohms5 watts (7 dBW)150 watts (21.75 dBW)Subwoofer system

$31025H x 141/2W x 111/2D50 lbs.Ported reflex12" cone bass; 6" cone midrange; 11/10" voice -coil Dhorm tweeter


Crossover 500 Hz; 5 kHzImpedance 8 ohmsMin. power 5 watts (7 dBW)Max. power 100 watts (20 dBW)Controls Midrange level; high -frequency

levelFeatures Circuit breaker protection for highfrequency driver; black walnut veneer finish

Models also available316R, $499; S-1, $435; 313, $330;A-10, $189

1980 Edition 47

ChartwellReference MonitorInternational, Inc.2380 C Camino Vida RobleCarlsbad, Calif. 92008

PM -450 (Passive)Price $2,600/prDimensions 30H x 18W x 161/2DWeight 70 lbs.Type Bass reflexDrivers 12" polypropylene woofer; 1" soft -

dome tweeterResponse 40 Hz to 20 kHz, ±3 dBCrossover 2 kHzImpedance 8 ohmsMin. power 30 watts (14.75 dBW)Max. power 350 watts (25.5 dBW)Features Utilizes new low -coloration poly-propylene cones

LS3/5APriceDimensionsWeightTypeDrivers

ResponseCrossoverImpedanceMin. powerMax. powerFeaturesCorp

PM -110PriceDimensions

TypeDrivers


$560/pr.12H x 71hW x 61/4011 lbs. 8 oz.Acoustic suspension41/2" bass/midrange; dometweeter60 Hz to 20 kHz, ±4 dB3 kHz15 ohms25 watts (14 dBW)25 watts (14 dBW)Designed by British Broadcasting

$530/pr.

18H x 91/2W x 8D

Bass reflex61/2" bass/midrange; polypropy-lene bass/midrange; 1" tweeter65 Hz to 20 kHz, ±3 dB2.5 kHz8 ohms10 watts (10 dBW)80 watts (16 dBW)Utilizes new low -coloration poly-

propylene cones

Models also availablePM -410, $1,600/pr. PM -210,$900/pr

CIZEKCizek Audio Systems, Inc.15 Stevens St.Andover, Mass. 01810

MG -27PriceDimensionsWeightTypeDrivers

$29529H x 173/4W x 121/2D80 lbs.Acoustic suspensionTwo 10" acoustic suspension, bassdrivers

Response 27 HY to 200 Hz, ±3 dB re 86 dBSPL at 1 meter at 1 watt

Crossover 200 HzImpedance 4 ohmsMin. power 25 watts (14 dBW)Max. power 600 watts (27.75 dBW)Features Direct connection to Cizek Models1, 2, or 3, or provision for biamping

1Price $219

Dimensions 25H x 151/2W x 91/2DWeight 45 lbs. 14 oz.Type DynamicDrivers 10" acoustic suspension woofer; 1"

hemispherical dome tweeterRespcnse 35 Hz to 17 kHz, +1.5, 2 dB re 88

dB SPL at 1 meterCross Dyer 1.5 kHzImpedance 4.25 ohms, ±0.20 ohms from 100

Hz to 15 kHz with controls in "flat"position; with 0 adjustment in 0.6position; with 0 in the 1 position.impedance is 7.25 ohms

Min. power 15 watts (11.75 dBW) continuousMax. power 150 watts (21.75 dBW)Controls Level; contour; 0 adjustment

SW -1 Sound WindowPrice $159/pr.Dimensions 12H x 12W x 31/2DWeigh, 20 lbs /pr.Type Acoustic suspensionDrivers 61/2" woofer; 13/4' cone tweeterResponse 100 Hz to 17 kHz, +3 dB re 88 dB

SPL at 1 meter at 1 wattCrosscver 3 kHzImpedance 4 ohmsMin. power 15 watts (11.75 dBW)Max. power 100 watts (20 dBW)Features Solid Acuthane'" with oak finish;acoustically transparent foam grille

Models also availableKA 1 Classic. $295 2, $149; 3, $99

CONCEPTConcept1601 W. Glenlake Ave.Chicago, III. 60143

CEMPriceDimens onsWeightTypeDrivers

ResponseCrossoverImpedanceMin. powerControlsFeaturescontrol

CE -2PriceDimensionsWeightTypeDrivers

ResponseCrossoverImpedanceMin. powerControlsFeatures

$59545H x 18W x 151/2D102 lbs.Passive radiatorHeil air -motion transformer, mi-drange/tweeter25 Hz to 23 kHz, ±3 dB1.3 kHz at 18 dB6 ohms25 watts (14 dBW)Midrange; tweeterRoom -resonance compensation

$345251/2H x 14W x 141/4D54 lbs.Passive radiator10" cast woofer; Heil air -motiontransformer35 Hz to 23 kHz, +3 dB1.5 kHz at 18 dB6 ohms20 watts (13 dBW)Midrange; tweeterLED power indicator

Models also availablerE $445

CRITERIONLafayette Radio Electronics111 Jericho TurnpikeSyosset, N.Y. 11791

CriterionPriceDimensionsWeightTypeDrivers


DS -1PriceDimensionsWeightType

DriversResponseCrossoverImpedanceMin. powerMax. powerFeatures

2003A$220291/2H x 173/4W x 111/2048 lbs.Vented bass reflex15" woofer; horn midrange; twophenolic -ring tweeters20 Hz to 20 kHz, ±10 dB2 kHz; 4 kHz8 ohms15 watts (11.75 dBW)120 watts (20.75 dBW) peakMidrange; trebleCircuit breaker

$159.98/pr.11714H x 71/2W x 63/4D12 lbs.Acoustic suspension mini speakersystem6V2" woofer; 1" soft -dome tweeter55 Hz to 20 kHz, ±10 dB3 kHz8 ohms5 watts (7 dBW)70 watts (18.5 dBW) peakGenuine walnut veneer

Models also availableCriterion 2002A, $149.99; Criterion2001A, $119 99

CUSTOM CRAFTCustom Craft, Inc.819 S. Kraemer Blvd.Placentia, Calif. 92670

Dimension Lab Series

Mk-XII SubwooferPrice $445Dimensions 24H x 16W x 12DWeight 50 lbs.Type Acoustic suspensionDrivers 12" bassResponse 30 Hz to 100 Hz, ±3 dB re 92 dB

SPL at 1 meter at 1 wattImpedance 8 ohmsMin. power 25 watts (14 dBW)Max. power 150 watts (21.75 dBW)

Mk -VIIIPriceDimensionsWeightTypeDrivers

$199141/2H x 10W x 61/2D17 lbs.Acoustic suspension8" woofer; 41/2" midrange;tweeter


Crossover 1.5 kHz; 4 kHzImpedance 4 ohmsMin. power 10 watts (10 dBW)Max. power 60 watts (17.75 dBW)Features American walnut cabinet

Professional Series

PR -8PriceDimensionsWeightTypeDrivers

$79.9522H x 131/2W x 87/eD20 lbs.Acoustic suspension8" woofer; 13/4" phenolic -ringtweeter

48 Hign Fidelity's Buying Guide to Speaker Systems

Response 65 Hz to 20 kHz re 94 dB SPL at 1meter at 1 watt

Crossover 2.5 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 40 watts (16 dBW)

Models also availableMk V, $149; Mk -II, $110; Mk -I, $87

DAHLQUISTDahlquist, Inc.601 Old Willets PathHauppauge, N.Y. 11787

DO -10PriceDimensionsWeightTypeDrivers

$435311/2H x 301/2W x 9D50 lbs.Phased array10" woofer; 5" midwoofer; 2" domemidrange; Vs" dome tweeter;piezoelectric supertweeter

Response 37 Hz to 27 kHzCrossover 400 Hz; 1 kHz; 6 kHz; 12.5 kHzImpedance 8 ohmsMin. power 60 watts (17.75 dBW)Max. power 200 watts (23 dBW) with protective

fusesControls Continuously variable tweeter con-

trol for boost or cutFeatures Patented solutions to problems ofinertial time delay and baffle edge diffraction

DO -1W Low Bass ModulePriceDimensions 26H x 181/2W x 14 4/5DWeight 60 lbsType Acoustic suspensionDrivers 13" woofer in heavy cast frameResponse 20 to 100 HzCrossover Depends upon main system to

which it is crossed over (externalcrossover required)

Impedance 8 ohmsMin. power 60 watts (17.75 dBW)Max. power 200 watts (23 dBW) with protective

fuseControls NoneFeatures Unit typically adds on octave of ac-curate low bass response to speaker systems;available with black or white grille cloth

DAYTON WRIGHTOdin Studios Ltd.(Distributor)7321 Victoria Park Ave., Unit 2Markham, Ontario, Canada L3R2Z8

XG-10PriceDimensionsWeightTypeDrivers

Response

CrossoverImpedanceMm. powerMax. power

1980 Edition

$3,399425xisH x 39W x 91/2D100 lbsElectrostaticTen electrostatic full -range cells,one modified piezoelectric tweeter40 Hz to 35 kHz, +4 dB re 82 dBSPL at 1 meter at 1 watt10 kHz2.5 ohms to 200 ohms75 watts (18.75 dBW)100 to 600 watts (20 to 27.75dBW)continuous; varies with fre-quency

Controls Tweeter level; bias; coal upper cut-off

Features Three modes of use: -iormal plustwo external tweeter crossover points (3 kHz or 10kHz)

DECCARocelco, Inc.1669 Flint RoadDownsview, Ont. M3J 2J7

Supertwee$t1e99r50PriceDimensions 4H x 4W x 51/8DWeight 5 lbsType Ribbon tweeter in enclosure with-

out hornDrivers Ribbon tweeter only (add-on to ex-

isting systems)Response 7 kHz to 30 kHzCrossover 7 kHzImpedance 8 ohmsMax. power 30 watts (14.75 dBW)Controls NoneFeatures Driven element is ultra -light ribbonfor fast transient response

Models also availableLondon Ribbon Tweeter. $199.50

DENNESENDennesen Electrostatic, Inc.Box 51Beverly, Mass. 01915

ESL -203PriceDimensionsWeightTypeDrivers

Response

CrossoverImpedanceMm. powerMax. power

180 "ThePriceDimensionsWeightTypeDriversResponse

CrossoverImpedanceMm. powerMax. powerFeatures

STPriceDimensionsWeightTypeDriversResponseCrossoverImpedanceMin. powerMax. power

$87539H x 10W x 8D50 lbs.Electrostatic/dynamic hybridFive electrostatic elements in verti-cal line source, 11/2" dome mi-drange; 8" acoustic suspensionbextrene woofer30 Hz to 35 kHz, +2 dB re 88 dBSPL at 1 meter at 1 watt800 Hz; 3 kHz8 ohms15 watts (11.75 dBW)150 watts (21 75 dBW)

Voice"$220211/2H x 131/2W x 9D32 lbsDynamic/electrostatic8" woofer; 5 electrostatic elements32 Hz to 32 kHz, +2 re 88 dB SPLat 1 meter at 1 watt1.25 kHz6 ohms15 watts (11.75 dBW)UnlimitedElectrostatic hybrid

$14010H x 15W x 4D20 lbs.Tweeter array8 electrostatic tweeters3.5 kHz to 35 kHz, +1/2 dB3.5 kHz; 4.5 kHz8 ohms15 watts (11.75 CBW)Unlimited

Controls Selection roll -in of 3.5 or 4.5 kHzFeatures Open-air baffle; dipole

Models also availableESL -202, $350; ESL -110, $275

DESIGN ACOUSTICSDesign Acoustics, Inc.2426 Amsler St.Torrance, Calif. 90505

$750 (walnut)26H x 22W x 221X(spherical)70 lbs.Vented; acoustic suspensionTwo 8" woofers; 11/2" dome mi-drange; two 5' cone midrange; two1' dome tweeters; three 11/2" conetweeters

Response 30 Hz to 18 kHz, +2 dBCrossover 650 Hz; 2 kHzImpedance 4 ohmsMin. power 25 watts (14 dBW)Max. power 200 watts (23 dBW)Controls Woofer; midrange; tweeter; disper-

sion control for 180 degrees or 360degrees

Features Omnidirectional speaker withchore of 180- or 360 -degree radiation

D -12APriceDimensionsWeightTypeDrivers

D-4 APriceDimensionsWe ghtTypeDrivers

$34538H x 161/2W x 11D55 titAcOutidc suspension; ventedTwo r long -throw woofers; 5" mi-drange driver; two 11/2" cone tweet-

Response 40 Hz to 18 kHz. +3 dBCrossover 700 Hz; 2 kHzImpedance 4 ohmsMin. power 20 watts (13 dBW)Max. power 125 watts (21 dBW)Controls Woofer; tweeterFeatures Drivers arranged on trapezoid for

fispersion; conventional appearance

D-3PriceDimensionsWeightTypeDnvers

$24025H x 12W x 111/2D40 lbs.Vented; acoustic suspension10' woofer; 5' cone midrange; 1'dome tweeter

Response 40 Hz to 20 kHz. +3.5 dBCrossover 500 Hz; 2.5 kHzImpedance 8 ohmsM n. power 30 watts (14.75 dBW)Mix. power 100 watts (20 dBW)Features Comes equipped with bracket on,ta, panel and accessory hardware to permithanging on a wall

C -1AP -iceDimensionsWeightTypeDriversResponseCrossoverImpedanceMin. powerMax. powerFeatures

$1252014H x 11W x 8D12 lbs.Vented; acoustic suspension8" long -throw woofer; 11/2"cone50 Hz to 15 kHz. +3.5 dB1.5 kHz6 ohms15 watts (11.75 dBW)30 watts (14.75 dBW)Same as D -1W

Models also availableD-8, $590; D-6, $390 (base in-cluded); D-2, $220; D -1W, $135

49

DFSDFS, Inc.10255 S.W. ParkwayPortland, Ore. 97204

T-5PriceDimensionsWeightDrivers

Response

$350371/4H x 143/eW x 121/4060 lbs.10" woofer; 8" woofer; 5" midrange,two 21/2" tweeters40 Hz to 18 kHz, +5 dB re 98 dBSPL at 1 meter at 1 watt

J-2Price $160Dimensions 241/2H x 131/2W x 12DWeight 40 lbs.Type Acoustic suspensionDrivers 10" woofer; 21/2" tweeterResponse 50 Hz to 18 kHz, +5 dB re 95 dB

SPL at 1 meter at 1 wattFeatures Walnut cabinet

J-1Price $136Dimensions 203/4H x 123/4W x 105/eDWeight 35 lbs.Drivers 8" woofer; 21/2" tweeterResponse 55 Hz to 18 kHz, +5 dB re 96 dB

SPL at 1 meter at 1 wattMin. power 15 watts (11.75 dBW)Max. power 40 watts (16 dBW)Features Constructed of high -density parti-cle board and walnut veneer

Models also availableT-4, $290; J-3, $235

DWDDWD Audio Systems3206 N. Marks St.Fresno, Calif. 93705

ETR 12"PriceDimensionsWeightTypeDriversResponse


Tower$42942H x 14W x 117/6D61 lbs.Passive radiator12" woofer, 5" midrange, 3" tweeter36 Hz to 20 kHz, ±4 dB re 96 dBSPL at 1 meter at 1 watt1.5 kHz; 7 kHz8 ohms20 watts (13 dBW)225 watts (23.5 dBW)

Controls TweeterFeatures Front -mounted passive radiator;ferrofluid-damped; self -resetting circuit breaker

ETR-412PriceDimensionsWeightTypeDriversResponse

$27926H x 141/2W x 113/5D40 lbs.Passive radiator12" woofer; 5" midrange; 3" tweeter45 Hz to 20 kHz, ±4 dB re 94 dBSPL at 1 meter at 1 watt

Crossover 1.5 kHz; 7 kHzImpedance 8 ohmsMin. power 15 watts (11.75 dBW)Max. power 190 watts (22.75 dBW)Controls TweeterFeatures Rear -mounted passive radiator;ferrofluid-damped; self -resetting circuit breaker

ETR-280Price $129


Response

CrossoverImpedanceMin. powerMax. powerFeatur

20H x 111/2W x 91/8D21 lbs.Vented8" long -excursion woofer; 3" high -dispersion tweeter55 Hz to 20 kHz, +4 dB re 92 dBSPL at 1 meter at 1 watt4.5 kHz8 ohms10 watts (10 dBW)90 watts (19.5 dBW)Self -resetting circuit breaker

Power Panel Series

Power Panel TenPrice $650Dimensions 38H x 22W x 9DWeight 85 lbs.Type Passive radiatorDrivers Two 10" woofers; 5" lower mi-

drange; 2" dome midrange; 1"

dome tweeter; 1" supertweeterResporse 32 Hz to 20 kHz, +3 dB re 96 dB

SPL at 1 meter at 1 wattCrossover 750 Hz; 5 kHzImpedance 8 ohms (nominal)Min. power 25 watts (14 dBW)Max. pcwer No limitControls Separate controls fdr three upper

frequency drivesFeatures All ferrofluid components; 15" pas-sive radiator (rear mounted); LED power input in-dicators

Models also availableETR-410, $249, ETR-310, $169;Power Panel Eight, $550

DYNACODynaco, Inc.P.O. Box 612Needham, Mass. 02195

A-350PriceDimensionsWeightTypeDrivers

$39043H x 14W x 141/2D68 lbs.Passive radiatorOmni directional supertweeter; 4/5" soft plastic dome tweeter; 3"cone midrange; 10" rubber -edgecone woofer

Response 35 Hz to 25 kHz, 3 dB re 89 dBSPL at 1 meter at 1 watt

Crossover 3.5 kHz; 11.3 kHzImpedance 8 ohmsMin. power 15 watts (11.75 dBW)Max. power 110 watts (20.5 dBW)Controls Tweeter (zero boost to +3 dB); mi-

drange (zero boost to +3 dB)Features Omni-Dyn' omnidirectionaltweeter, o led walnut veneer

A-150Price $150Dimensions 22H x 121/4W x 123/4DWeight 36 lbs.Type Acoustic suspensionDrivers 1" soft -cloth dome tweeter; 10"

rubber -edge cone wooferResponse 50 Hz to 20 kHz, +3 dB re 89 dB

SPL at 1 meter at 1 wattCrossove.. 2 kHzImpedance 8 ohmsMin. power 15 watts (11.75 dBW)Max. power 65 watts (18.25 dBW)Controls Tweeter (+2 dB to -50 dB)Features Walnut -grain vinyl

Models also availableA 2511 5250

ELECTRO-VOICEElectro-Voice, Inc.656 Cecil St.Buchanan, Mich. 49107

Sentry III, Series IIPrice $900 (optional SEQ equalizer,

$95.50)Dimensions 281/2H x 341/2W x 20Y2DWeight 156 lbs.Type VentedDrivers 15" cone low -frequency driver; 32"

sectoral horn midrange; 8" sectoralhorn tweeter

Response 40 Hz to 18 kHz, +3 dB re 99 dBSPL at 1 watt at 1 meter

Crossover 600 Hz; 3.5 kHzMin. power 1.4 watts (0 dBW)Max. power 50 watts (17 dBW)Controls TweeterFeatures Tweeter protection

Interface: C, Series II Series IIPrice $995/pr. (includes equalizer)Dimensions 311/2H x 20W x 121/2DWeight 60 lbs.Type Vented; equalizedDrivers 10" woofer; Super -Dome' tweeter

with acoustic lens; 61/2" vented mi-drange

Response 25 Hz tO 20 kHz; 30 Hz to 18 kHz,

Crossover 4± 25dB

2Hz(acoustic); 400 Hz, 2.5 kHz(electrical)

Impedance 6 ohmsMin. power 2.8 watts (4.5 dBW) re 90 dB SPLMax. power 350 watts (25.5 dBW) re 11 dB SPLControls High -frequency slope on equalizerFeatures Walnut veneer cabinet

Sentry VPrice $325 (optional SEQ equalizer,

Dimensions$95.50)

Dimensions 20W x 113/4DWeight 52 lbs.Type VentedDrivers 10" low -frequency cone driver; 8"

sectoral horn tweeterResponse 45 Hz to 18 kHz, +3 dB re 96 DB

SPL at 1 watt at 1 meterCrossover 2 kHzImpedance 6 ohmsMin. power 2 8 watt (4.5 dBW)Max. power 30 watts (14.75 dBW)Controls TweeterFeatures Tweeter overload protection

Interface: 3, Series IIPriceDimensionsWeightTypeDrivers

Response

Crossover

ImpedanceMin. powerMax. powerControlsFeatures

$199251/4H x 143/4W x 131/eD33 lbs.Vent substitute12" low -frequency radiator; 8" mi-drange/woofer; 11/2" Super -Dome'" tweeter with acoustic lens34 Hz to 20 kHz; 40 Hz to 18 kHz,+3 dB57 Hz (acoustic); 1.5 kHz (electri-cal)8 ohms3.6 watts (5.5 dBW) re 90 dB SPL250 watts (24 dBW) re 108 dB SPLHigh -frequency slope controlWalnut -grained cabinet

Interface: 2, Series IIPrice $160Dimensions 241/4H x 133/4W x 10 11/160


Ivrankosonn Co IIWu",

WeightTypeDrivers

Response

Crossover


Doom Supertwoaler

25 lbs.Vent substitute10" low -frequency radiator; 8" mi-drange/woofer; 11/2" Super -Dome

tweeter with acoustic lens39 Hz to 20 kHz; 47 Hz to 18 kHz,+3 dB66 Hz (acoustic); 1 5 kHz (electri-cal)8 ohms3.6 watts (5.5 dBW) re 90 dB SPL250 watts (24 dBW) re 108 dB SPLHigh -frequency slope controlWalnut -grained cabinet

Models also availableInterface: D, Series II, $1,750/pr.(includes equalizer); Interface: BSeries III, $735/pr. (includes equal-izer); Interface: A Series III, $550/pr.; Musicaster IIA, $185.50; Inter-face: 1, Series II, $120

EPICUREEpicure Products, Inc.1 Charles St.Newburyport, Mass. 01950

3.0 (Trilogy)Price $575Dimensions 413/401 x 81/2" square (at top) x

161/2" square (at bottom)Weight 61 lbs.Type Acoustic suspensionDrivers 10" woofer; 6" midrange; 1" air -

spring tweeterResponse 32 Hz to 20 kHz, ±3 dBCrossover 475 Hz; 2.6 kHzImpedance 4 ohmsMin. power 30 watts (14.75 dBW)Max. power 100 watts (20 dBW)Controls Three -position L -pad tweeter at-

tenuatorFeatures Truncated pyramid cabinet forminimal diffraction; low inductance amplifier load;total system resonance control

500PriceDimensions

WeightTypeDrivers

ResponseCrossover

1980 Edition

$40014H x 12W x 36D with 31/4" integralbase50 lbs.Passive piston bass radiator1" air -spring tweeter; 4" dynamicmidrange; 10" woofer with focusedfield magnetic circuit; two 12" pas-sive radiators45 Hz to 20 kHz, +3 dB750 Hz; 3 kHz

Pried NNW C

Impedance 4 ohmsMM. power 20 watts (13 dBW)Max. power 100 watts (20 dBW)Features Twin "Passive Piston' bass radia-tors; "Focused Field" magnetic circuit in bassdriver

FourteenPriceDimensionsWeightTypeDrivers

$19924H x 131/2W x 9D40 lbs.Passive piston bass radiator6" long -throw woofer; 8" passiveradiator; 1' air spring tweeter

Response 28 Hz to 20 kHz, +3 dBCrossover 1.8 kHzImpedance 8 ohmsMin. power 15 watts (11.75 dBW)Max. power 80 watts (19 dBW)Controls Three -position tweeter control on

front panelFeatures 8" "Passive Piston" Pass radiatorwith fourth order alignment; walnut veneer cabinet

Ten: VPrice $125Dimensions 22H x 12W x 95/BDWeight 33 lbs.Type Acoustic suspensionDrivers 1" tweeter; 8" wooferResponse 42 Hz to 20 kHz, ±3 dBCrossover 1.8 kHzImpedance 8 ohmsMin. power 12 watts (10.75 dBW)Max. power 75 watts (18.75 dBW)Controls TweeterFeatures Individual frequency -responsegraph provided with each speaker

EPI Series

M-200 CPriceDimensionsWeightTypeDrivers

ResponseCrossoverImpedanceMin powerMax powerControls

Features

$275321/4H x 17W x 11D60 lbs."Passive Piston" bass radiator8" high -efficiency woofer; 1" airspring tweeter; 12" passive radia-tor36 Hz to 20 kHz, ± 3 dB1.8 kHz8 ohms15 watts (11.75 dBW) continuous125 watts (21 dBW)Three -position tweeter attenuatorswitch on front panelWalnut veneer cabinet

FuHon Nuance

100-VPriceDimensionsWeightTypeDriversResponseCrossoverImpedanceMin. powerMax. powerFeaturesModel 00 W

Goodman. HE -2

$12521H x 11W x 91325 lbs.Acoustic suspension1" tweeter; 8' woofer45 Hz to 20 kHz, +3 dB1.8 kHz8 ohms10 watts (20 dBW)75 watts (18.75 dBW)Available in walnut veneer as

Models also available400 Plus, $450; Twenty +, $275;Eleven, $159; Five, $90; 120 C,$159; 70 C, $79

ESSESS, Inc.9613 Oates DriveSacramento, Calif. 95827

HEIL SERIES

AMT 1B MonitorPriceDimensions 39'/4H$650 x 155/eW x 151/4DWeight 103 lbs. 8 oz.Type Passive radiatorDrivers 12" woofer; Heil air -motion trans-

former midrange/tweeterRex ponse 30 Hz to 23 kHz, ±3 dB re 90 dB

SPL at 1 meter at 1 wattCrossover 1 kHzImpedance 5 ohmsMin. power 20 watts (13 dBW)Max. power 375 watts (25.75 dBW)Controls Tweeter (continuously variable)Features Equipped with direct inputs forbiamp connection; Heil square -wave rise time: 15microseconds at 5 kHz; oiled -walnut cabinet

AMT -1B BookshelfPrice $456Dimensions 24H x 14W x 14DWeight 65 lbs.Type Passive radiatorDrivers 12" woofer; Heil air -motion trans-

former midrange/tweeter40 Hz to 23 kHz, +3 dB re 90 dBSPL at 1 meter at 1 watt

Crossover 1 kHzImpedance 6 ohmsMin. power 20 watts (13 dBW)Max. power 375 watts (25.75 dBW)

Response

51

Controls Tweeter (variable)Features Genuine walnut veneer; Heilsquare -wave rise time: 15 microseconds at 5 kHz

TEMPEST SERIES

Bookshelf -1PriceDimensionsWeightTypeDrivers

Response


Features

$31024H x 14W x 14D50 lbs.Passive radiator10" resin -impregnated conewoofer; Heil air -motion transformermidrange/tweeter38 Hz to 24 kHz, 1-3 dB re 93 dBSPL at 1 meter at 1 watt2.4 kHz6 ohms15 watts (11.75 dBW)140 watts (21.5 dBW)Brilliance (variable from +1 to -60dB over range of 3 to 23 kHz)Genuine walnut veneer

PERFORMANCE SERIES

PS -4APriceDimensionsWeightTypeDrivers

$37035H x 121/2W x 12 1/10D48 lbs.Passive radiator10" cone woofer; Heil air -motiontransformer midrange/tweeter


Crossover 2 kHzImpedance 6 ohmsMin. power 15 watts (11.75 dBW)Max. power 160 watts (22 dBW)Controls Brilliance (variable from 1.5 to ?,:

kHz)Features Walnut -grain vinyl; pedestal model;AMT square -wave rise time: 12 microseconds at 5kHz

PS -8APrice $205Dimensions 22H x 121/4W x 10 3/5DWeight 30 lbs.Type Passive radiatorDrivers 8" cone woofer; Heil air -motion

transformer midrange/tweeterResponse 50 Hz to 20 kHz, +3 dB re 93 dB

SPL at 1 meter at 1 wattCrossover 2.4 kHzImpedance 6 ohmsMin. power 10 watts (10 dBW)Max. power 100 watts (20 dBW)Controls Brilliance (variable from 2 to 22

kHz)Features Walnut -grain vinyl; bookshelfmodel, AMT square -wave rise time: 15 mi-croseconds at 5 kHz

Models also availableAMT -1B, $507, Classic, $410;Bookshelf -2, $246; PS -5A, $270;PS -9A, $175

ESTranslatorBTM Manufacturing Co.2005 N. Lincoln Ave.Pasadena, Calif. 91103

Bass Console 1Price

320PriceDimensions

WeightTypeDriversResponseCrossoverImpedanceMin. powerControls

$499431/2H x 215/8W x 41/2D (top); 91/2D(bottom)47 lbs.Electrostatic bipolarTwo 10" cone woofers30 Hz to 22 kHz200 Hz; 1.2 kHz8 ohms35 watts (15.5 dBW)Double diaphragms; self -energiz-ing bias

Bass Console 2Price $229

290PriceDimensions

WeightTypeDriversResponseCrossoverImpedanceMin. power

$139211/4H x 125/8W x 41/2D (top); 71/2D(bottom)14 lbs.Electrostatic bipolar8" cone woofer70 Hz to 22 kHz200 Hz; 1.2 kHz8 ohms25 watts (14 dBW)

Bass Console 3Price

Models also available310, $349, 300, $199

FISHERFisher Corp.21314 Lassen St.Chatsworth, Calif. 91311

ST -461PriceDimensionsWeightTypeDrivers

Response



Response

CrossoverImpedanceMm. powerMax. powerControlsFeatures

XP -95BPriceDimensionsWeightTypeDrivers

Response

$409,95291/4H x 181/4W x 141/2D53 lbs.Ported bass reflex15" woofer; two 5" midrange driv-ers; 3" tweeter40 Hz to 20 kHz, + 10 dB re 92 dBSPL at 1 meter at 1 watt1 Hz; 5 kHz8 ohms25 watts (14 dBW)130 watts (21.25 dBW)Treble; midrangeCircuit breaker

$349.95271/41-I x 17W x 131/2D44 lbs.Ported bass reflex12" woofer; two 5" midrange driv-ers; 3" tweeter45 Hz to 20 kHz, +10 dB re 91 dBSPL at 1 meter at 1 watt

1 kHz; 5 kHz8 ohms20 watts (13 dBW)100 watts (20 dBW)Treble; midrangeCircuit breaker

$279 9528H x 171/2W x 12 7/8D44 lbs.Air suspension15" woofer; two 5" midranges; 3"flare -dome tweeter28 Hz to 20 kHz


ST -440PriceDimensionsWeightTypeDriversResponse


XP -335PriceDimensionsTypeDriversResponseImpedanceMax. power

ST -420PriceDimensionsWeightTypeDriversResponse


XP -325PriceDimensionsWeightTypeDriversResponseCrossoverImpedanceMax. power

MS -125APriceDimensionsWeightTypeDriversResponseCrossoverImpedanceMin. powerMax. power

1 kHz; 5 kHz8 ohms8 watts (9 dBW) continuous75 watts (18.75 dBW) continuousTweeter; midrangeCircuit breaker

$259.95251/2H x 16W x 123/4D36 lbs.Ported bass reflex12" woofer; 5" midrange; 3" tweeter45 Hz to 18 kHz, ± 10 dB re 90 dBSPL at 1 meter at 1 watt1 kHz; 5 kHz8 ohms12 watts (10.75 dBW)75 watts (18.75 dBW)TrebleCircuit breaker

$180251/4H x 16W x 115/4DVented12" woofer; 5" midrange; 3' tweeter58 Hz to 20 kHz8 ohms70 watts (18.5 dBW)

$149.95217/4H x 135/4W x 91/4D19 lbs.Passive radiator8" woofer; 3" tweeter50 Hz to 16 kHz, ±10 dB re 90 dBSPL at 1 meter at 1 watt5 kHz8 ohms3.5 watts (5.5 dBW)35 watts (15.5 dBW)

$140217/aH x 135/aW x 81/2D18 lbs. 8 oz.Air suspension10" woofer; 5" midrange; 3" tweeter65 Hz to 18 kHz1.5 kHz; 5 kHz8 ohms35 watts (15.5 dBW)

$90217/aH x 135/4W x 9D15 lbs.Passive radiatorr woofer; 2" tweeter70 Hz to 14 kHz, ± 10 dB6 kHz8 ohms4 watts (6 dBW)30 watts (14.75 dBW)

Models also availableST -460, $389.95; ST -450,$329.95; ST -441, $279.95; ST -430, $219.95; XP -330, $160; MS -145, $140; MS -135A, $100; MS -115A, $80

FRANKMANN RESEARCHFrankmann ResearchP.O. Box 125758 Washington Ave.Greenville, Ohio 45331

52High Fidelity's Buying Guide to Speaker Systems

Frankmann ReferenceStandard MonitorPrice $895Dimensions 42H x 10W x 9DWeight 105 lbs.Type Infinite baffleDrivers Four 12" woofers (bass module

C,); two 6" midrange drivers perpanel; one diffraction horn tweeterand cone tweeter per panel

Response 24 Hz to 22 kHz, f 4 dB re 96 dBSPL at 1 meter at 1 watt

Crossover 200 Hz, 5 kHz, 10 kHzImpedance 6 ohmsMin. power 10 watts (10 dBW)Max. power 125 watts (21 dBW)Controls Tweeter attenuatorFeatures Three -unit system of one bassmodule and two mid -tweeter panels

Frankmann Co ModulePriceDimensionsWeightTypeDriversResponse


$80030H x 50W x 24D130 lbs.Infinite baffleEight 12" woofers16 Hz to 200 kHz, }4 dB re 96 dBSPL at 1 meter at 1 watt200 Hz8 ohms10 watts (10 dBW)200 watts (23 dBW)

Features Common bass module; available incustom cabinetry

Models also availableFrankmann 8/4, $650/pr Frank-mann C, Module, $500

FRAZIERFrazier, Inc.1930 Valley View LaneDallas, Texas 75234

ElevenPriceDimensionsWeightTypeDrivers

$1,44055H x 30W x 18D250 lbs.Modified Helmholtz tuned slot15" woofer; 12" woofer; four 4" mi-dranges; 2 piezoelectric tweeters


Crossover 400 Hz; 4 kHzImpedance 4 ohmsMin. power 1 watt (0 dBW) continuousMax. power 100 watts (20 dBW) continuousControls Tweeter; midrangeFeatures Reproduces the lowest organnotes

Frazier's "Thing"Price $1,074Dimensions 50H x 24W x 18DWeight 175 lbs.Type Modified Helmholtz tuned slotDrivers 12" woofer; 10" woofer; 133/4" x

41/2" exponential midrange horn; 2piezoelectric tweeters


Crossover 800 Hz; 4 kHzImpedance 4 ohmsMin. power 1 watt (0 dBW)Max. power 80 watts (19 dBW)Controls Midrange; tweeterFeatures High -frequency piezoelectricsstacked for column effect; large tower

ConcertoPrice $315Dimensions 21'/2H x 16W x 16DWeight 56 lbs.Type Modified Helmholtz tuned slotDrivers 10' woofer; 3" x T compression

horn; piezoelectric tweeterResponse 35 Hz to 25 kHz, -t 5 dB re 96 dB

SPL at 1 meter at 1 wattCrossover 2 kHz; 4 kHzImpedance 8 ohmsMin. power 1 watt (0 dBW) contiruousMax. power 30 watts (14.75 dBW) continuousControls TweeterFeatures Also available in black utility finishas "Capsule Monitor"; end -table height

Super Monte CarloPrice $132Dimensions 19H x 101/2W x 12DWeight 31 lbsType Modified Helmholtz tuned slotDrivers 8" woofer; direct -coupled piezoe-

lectric tweeterResponse 50 Hz to 25 kHz, +5 dB re 93 dB

SPL at 1 meter at 1 wattCrossover 4 kHzImpedance 8 ohmsMin. power 1 watt (0 dBW) continuousMax. power 30 watts (15 dBW) continuousControls NoneFeatures Two-way system with no crossover

Super MidgetPriceDimensionsWeightTypeDriversResponse


$60153/4H x 63/4W x 91/2D13 lbsModified Helmholtz tuned slot4" driver50 Hz to 12 kHz, +5 dB re 89 dBSPL at 1 meter at 1 wattNone8 ohms1 watt (0 dBW) continuous10 watts (10 dBW) continuousNoneMay be used with car tape players

Models also availableSeven -A. $515, Mark V -A, $385,Mark IV -A, $233, CAD -1, $101

FRIEDFried Products Co.7616 City Line Ave.Philadelphia, Pa. 19151

Super MonitorPrice $5,000 (assembled); $1,200 (kit)Dimensions 56H x 35W x 12DWeight 164 lbsTypeDrivers.


Dynamic, transmission line12" high -flux plastic; 6" high -flux mi-drange; 1' high -flux Melinextweeter20 Hz to 20 kHz, +2 dB85 Hz; 3 kHz8 ohms25 watts (14 dBW)400 watts (26 dBW)

Features C satellite or woofer (specifySMW) available separately

Model T subwooferPrice $1,500 (assembled), $500 (kit)Dimensions 21H x 44W x 24CWeight 175 lbsType Dual transmission lines

Drive'sResponseCrossoverImpedanceMin. powerMax. power

Two 10" high -flux plastic woofers20 Hz to 300 kHz, +2 dBVariable8 ohms15 watts (11 75 dBW)100 watts (20 dBW)

Features Two separate inputs: one for usewith B/2 (first -order crossover); one for biamplifi-catior

O SubwooferPrice $600 (assembled); $500 (kit)Dimensions 30H x 241/2W x 14DWeight 66 lbs.Type DynamicDrivers 10" high -flux plasticResponse 20 Hz to 600 Hz, + 2.5 dB re 90 dB

SPL at 1 meter at 1 wattImpedance 8 ohmsMin. power 25 watts (14 dBW)Max. power 400 watts (26 dBW)Features Two inputs, 1 for use with eithermodels B/2 or C, 1 for use with biamplification

CPrice $475 (assembled); $200 (kit)Dimensions 131/4H x 6W (top); 101/2W (bottom)

x 6'/2D (top); 9D (bottom)Weight 18 lbs.Type Vented; pyramidal shapeDrivers 6t/2" high -flux plastic bass driver;

7/a" Melinex treble dome unitResponse 60 Hz to 22 kHz, +21/z dB re 90 dB

SPL at 1 meter at 1 wattCrossover 3.5 kHzImpedance 8 ohmsMin power 25 watts (14 dBW)Max. power 300 watts (24 75 dBW)Features Optional tilt -back stand available;available either by itself, or as top of Super Monitor

B 12Price $300Dimensions 12H x 8W x 7DWeight 15 lbs.Type DynamicDrivers 5" woofer; 1" tweeterResponse 60 Hz to 30 kHz, +2 dBCrossover 3.5 kHzImpedance 8 ohmsMin. power 25 watts (14 dBW)Max. power 100 watts (20 dBW)Features Tilt -back stand recommended;available as an option

O SpeakerPrice $140Dimensions 193/4H x 111/4W x 91/4DWeight 23 lbs.Type DynamicDrivers 8" woofer; 3/4" tweeterResponse 40 Hz to 20 kHz, +2.5 dBCrossover 2.5 kHzImpedance 8 ohmsMin. power 25 watts (14 dBW)Max. power 200 watts (23 dBW)Controls Impulse -perspective controlFeatures Tilt -back stand recommended;available as an option

Models also availableH/2 $2,100 (assembled); $800(kit), M/2, $950, R/III, $550, ModelW, $350, Model A, $190

FULTONFulton Electronics4204 Brunswick Ave. N.Minneapolis, Minn. 55422

1980 Edition53

PremierePriceDimensionsWeightTypeDrivers

Response

Crossover

ImpedanceMin. powerMax. powerControls

NuancePriceDimensionsWeightTypeDrivers

54,495/pr.60H x 25W x 22D300 lbs.Dynamic12" woofer; 12" midwoofer; 10" up-per woofer; 8" midrange; threespecial tweeters13 Hz to 81 kHz, ±1 dB re 82 dBSPL at 1 meter at 1 watt39 Hz; 122 Hz; 425 Hz; 2.4 kHz; 8kHz; 26 kHz8 ohms50 watts (17 dBW)400 watts (26 dBW)Woofer; midrange; tweeter

$49534H x 14W x 13D80 lbs.Infinite baffle10" woofer; 5" midrange; 2 specialtweeters

Response 34 Hz to 42 kHz, ±1.5 dBCrossover 760 Hz; 65 kHz; 15 kHzImpedance 8 ohmsMin. power 28 watts (14.5 dBW)Max. power 200 watts (23 dBW)Controls Tweeter; midrange; wooferFeatures Phase -aligned; genuine Americansolid and veneer cabinet; glass top; black or browngrille cloth

80PriceDimensionsDriversResponseImpedanceMm. powerMax. powerFeatures

$199173/4H x 97/4W x 81/2D8" woofer; two 21/2" tweeters50 Hz to 22 kHz, +2 dB8 ohms10 watts (10 dBW)60 watts (17.75 dBW)Genuine American walnut veneer

Models also available100, $279

FUNDAMENTAL RESEARCHFundamental ResearchSuccess St.Pittsburgh, Pa. 15212

"The Punch" WooferPriceDimensionsWeightTypeDriversResponseImpedanceMin. powerMax. powerFeatures

a r

$75024H x 60W x 18D225 lbs.Bass reflexFour 12" woofers25 Hz to 150 Hz4 or 8 ohms60 watts (17.75 dBW)400 watts (26 dBW)Fuse; system designed purely by

The Smaller Infrasonix WooferPriceDimensionsWeightTypeDriversResponseImpedanceMin. powerMax. powerFeaturese a

$29928H x 13W x 13D55 lbs.Acoustic suspension10" woofer20 Hz to 200 Hz8 ohms60 watts (17.75 dBW)200 watts (23 dBW)Fuse; system designed purely by

Models also availableThe Infrasonix Woofer, $450

GENESISGenesis Physics Corp.Newington ParkNewington, N.H. 03801

Model 3+Price $389Dimensions 371/2H x 14'/2W x 11'/2DWeight 53 lbs.Type Passive radiatorDrivers 8" woofer; 4" midrange; 1" tweeterResponse 28 Hz to 20 kHz, +4 dBCrossover 800 Hz; 3 kHzImpedance 6 ohmsMin. power 25 watts (14 dBW)Max. power 500 watts (27 dBW)Controls Midrange; tweeterFeatures Mounting bases included; magneticferrofluid tweeter and midrange; walnut or oak fin-ish

GenesisPriceDimensionsWeightTypeDriversResponseCrosscverImpedanceMin. powerMax. powerControlsFeatures

Model 1+$133 (walnut), $147 (oak)22H x 12Y2W x 91/2D28 lbs.Acoustic suspension8" woofer; 1" tweeter38 Hz to 20 kHz, f4 dB1.8 kHz8 ohms15 watts (11.75 dBW)100 watts (20 dBW)TweeterMagnetic fluid in tweeter

Genesis V-6Price $105Dimensions 18H x 101/4W x 7DWeight 19 lbs.

DriversResponseCrossoverImpedanceMin. powerMax. powerFeatures

61/2" woofer; 1" tweeter52 Hz to 20 kHz, +4 dB1.8 kHz8 ohms10 watts (10 dBW)75 watts (18.75 dBW)Magnetic fluid in tweeter

Models also availableGenesis 2+, $253, Genesis Model2, $185 (walnut), $207 (oak)

GLIGLI Integrated Sound Systems29-50 Northern Blvd.Long Island City, N.Y. 11101

4+PriceDimensionsWeightType

Drivers

ResponseCrossoverImpedanceMm. powerMax. power

$1,90050H x 36W x 29D385 lbs.Horn bass cabinetmid/high arrayTwo 15" woofers with two 15" pas-sive radiators; two 12" x 22" mi-drange horns; 6" x 18" horn tweeter35 Hz to 20 kHz750 Hz; 5 kHz8 ohms10 watts (10 dBW)500 watts (27 dBW)

with separate

Features Coil Guard speaker -protection cir-cuit, heavy-duty professional construction

2+PriceDimensionsWeight

$725371hH x 211hW x 221hD135 lbs.

Type

Drivers

ResponseCrossoverImpedanceMin. powerMax. powerFeatures Coil Guard protection circuit;heavy-duty professional construction

Bass reflex plus separate mid/higharrayTwo 15" woofers; eight 41/2" mi-drange drivers; four 31h" solid-state tweeters30 Hz to 25 kHz350 Hz; 7 kHz8 ohms10 watts (10 dBW)250 watts (24 dBW)

The Dwarf FRA-1PriceDimensionsWeightTypeDrivers

ResponseCrossoverImpedance 4/16 ohmsMin. power 10 watts (10 dBW)Max. power 250 watts (24 dBW)Features Coil Guard protection circuit;heavy-duty professional construction

$800/pr.203/4H x 19W x 91hD45 lbs.Bass reflex/passive radiatorEight 51/2" mid/low drivers with 15"passive radiator; four 31/2" solid-state tweeters48 Hz to 20 kHz, +3.5 dB7 kHz

Models also available3+, $995; 1+, $625; The DwarfFRA-2, $250

GOODMANSGoodmans Loudspeakers, Ltd.Plessey Consumer Products(Distributor)100 Commercial St.New York, N.Y. 11802

Achromat SigmaPrice $480Dimensions 27H x 13W x 110Weight 44 lbs.Type Acoustic suspension with auxiliary

bass radiatorDrivers 8" bass unit; 101/2" auxiliary bass

radiator; 1" high -frequency unitResponse 35 Hz to 23 kHz, +5 dB re 86 dB

SPL at 1 meter at 1 wattCrossover 2.4 kHzImpedance 8 ohmsMin. power 20 watts (13 dBW)Max. power 95 watts (19.75 dBW)Features "Long throw" bass unit; pleatedsurround woofer; soft -dome tweeter; 12 -elementcrossover using ferrite -cored chokes; fused forprotection

HE -2PriceDimensionsWeightTypeDrivers

$420281/2H x 131/2W x 14D53 lbs.Vented10" bass unit; 5" midrange driver; 1"ferrofluid, soft -dome tweeter

Response 60 Hz to 20 kHz, ±5 dB re 93.5 dBSPL at 1 meter at 1 watt

Crossover 1.5 kHz; 5 kHzImpedance 8 ohmsMin. power 3.5 watts (5.5 dBW)Max. power 65 watts (18 dBW)Features High -power voice coils; 9 -elementferrite -cored crossovers; high -flux magnet sys-tems; fused for protection

Achromat BetaPrice $250Dimensions 133/4H x 81/4W x 9DWeight 18 lbs.


Janis W-1

Heath AS -13113

Type Acoustic suspensionDrivers WA" woofer; 1" tweeterResponse 65 Hz to 23 kHz, t 5 dB re 85 dB

SPL at 1 meter at 1 wattCrossover 3 kHzImpedance 8 ohmsMin. power 18 watts (125 dBW)Max. power 70 watts (18.5 dBW)Features Ten -element crossover incorporat-ing ferrite -cored chokes to minimize loss of sen-sitivity; fused for protection

Models also availableHE -1 $480 Achromat Kappa,$335

GRAFYX-SPGrafyx Audio Products, Inc.310 Kirk RoadSt. Charles, III. 60174

SP -TenPriceDimensionsWeightTypeDrivers

Response

CrossoverImpedance

$209281/2H x 16Wx 131/4D60 lbs.Tuned port10" rubber surround woofer, 1'modified hard -dome tweeter29 Hz to 20 kHz, +3 dB re 87 dBSPL2 kHz8 ohms

Min. power 10 watts (10 dBW)Max. power 75 watts (183/4 dBW)Features Impedance remains between 6ohms and 8 5 ohms from 100 Hz to 1 MHz; tweetervoice -coil gap filled with ferrofluid

SP -Six -ConePrice $75Dimensions 16H x 10W x 71/20Weight 15 lbsType Tuned portDrivers 6" rubber surround woofer; 2" cone


SPLCrossover 2 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 35 watts (155 dBW)Features Impedance remains between 6ohms and 12 ohms from 100 Hz to 20 kHz

Models also availableSP -Eight. $149, SP -Six, $109

Janszon Z-40

GREAT WHITE WHALEGreat White Whale Dist., Inc.348 E. 84th St.New York, N.Y. 10028

Point 4PriceDimensionsWeightTypeDrivers

Response


$900/pr42H x 19W x 11D90 lbs.Acoustic suspension and open airTwo 10" woofers, two 8" midbass,two 5" midranges, two 11/2" dometweeters; two 1" open -baffled su-pertweeters20 Hz to 20 kHz, t25dBre89dBSPL at 1 meter at 1 watt80 Hz; 300 Hz; 2.5 0-iz; 8 kHz4 ohms50 watts (17 dBW)200 watts (23 dBW)Midrange, tweeter (continuouslyvariable from -3 to +3 dB)

Models also availablePoint 3, $450

HARTLEYHartley Products Corp.620 Island RoadRamsey, N.J. 07446

ReferencePriceDimensionsWeightTypeDrivers


$1,725501/4H x 36W x 24D300 lbsMagnetic suspension24" woofer, 10" m drange, T mi-drange/tweeter, 1" supertweeter16 Hz to 25 kHz250 Hz; 3 kHz; 7 kHz5 to 8 ohms25 watts (14 dBW)300 watts (24 75 dBW)Matched pairs

Holton TowerPrice $495Dimensions 491/2H x 20W x 14DWeight 105 lbsTypeDriversResponseCrossoverImpedanceMin. powerMax. powerFeatures

Magnetic suspensionTwo 10" woofers; I" tweeter20 Hz to 25 kHz2 kHz4 ohms15 watts (11.75 dBW)150 watts (21 75 dBW)Matched pairs

JBL L-150

Innotech 0-24

Zodiac 300BPriceDimensions

$275Dimensions 231/2W x 115/nDWeight 65 lbsType Mechanical suspensionDrivers Two 10" woofers; 1" tweeterResponse 30 Hz to 25 kHzCrossover 2 kHzImpedance 4 ohmsMin power 5 watts (7 dBW)Max. power 100 watts (20 dBW)Cortrols NoneFeatures Matched pairs

Zodiac 1BPrice $135Dimensions 213/4H x 14s/isW x 83/4DWe ght 65 lbs /prType Mechanical suspensionDrivers 10" woofer; 1" tweeterResponse 40 Hz to 25 kHzCrcssover 2 kHzImpedance 8 ohmsMir. power 5 watts (7 dBW)Mac. power 100 watts (20 dBW)Controls NoneFeatures Matched pairs

Models also availableConcertmaster, $1,380, ConcertJr , $375, Zodiac '78, $180, ZodiacJr $96

HEATHK ITHeath Co.Benton Harbor, Mich. 49022

ASX-1383Price $600/pr. (kit)Dimensions 36H x 131/2W x 133/4DWeight 50 lbs.Type Acoustic suspensionDr vers 10" critically -damped woofer; 5"

linear -phase cone midrange; 1" lin-ear -phase soft -dome tweeter

Response 40 Hz to 25 kHz, ±3 dBCrossover 800 Hz; 45.3 kHzImpedance 8 ohmsMil. power 10 watts (10 dBW)Max. power 200 watts (23 dBW)Features Compound curved battle to elimi-nate diffraction; individually fused drivers; rose-wood veneer cabinet

AS -1373PriceDimensionsWeightType

$170 (kit)26H x 141/2W x 11 1/e D47 lbsAcoustic suspension

1980 Edition 55

Drivers

Response

CrossoverImpedanceMin. power 10 watts (10 dBW)Max. power 200 watts (23 dBW)Controls Midrange; tweeterFeatures Tweeter can be installed for op-timum imaging with system positioned vertically orhorizontally; separate midrange subenclosure; in-dividually fused drivers

AS -1363PriceDimensionsWeightTypeDrivers


AS -1332PriceDimensionsWeightTypeDriversResponse


10" woofer; 4W midrange; 1"

dome tweeter30 Hz to 22 kHz, +0, -10 dB; 40 Hzto 20 kHz, +3 dB3 kHz8 ohms

$150 (kit)233/4H x 141/4W x 111/2D40 lbs.Acoustic suspension10" woofer; 4W midrange; 1"

dome tweeter30 Hz to 20 kHz, -10 dB750 Hz; 4 kHz8 ohms5 watts (7 dBW)130 watts (21.25 dBW)Midrange; tweeter

$58 (kit)191/2H x 101/2W x 8D15 lbs.Infinite baffle8" woofer; 13/4" tweeter40 Hz to 20 kHz, +0, -10 dB; 50 Hzto 18 kHz, +3 dB3.4 kHz8 ohms10 watts (10 dBW)50 watts (17 dBW)TweeterIndividually fused drivers

Models also availableAS -1348, $330 (kit); AS -1344,$150 (kit), AS -1342, $80 (kit)

HECOHammond Industries, Inc.155 Michael DriveSyosset, N.Y. 11791

D-100PriceDimensionsWeightTypeDrivers

CrossoverImpedanceMax. powerControls

$499311/2H x 153/4W x 101/4D75 lbs.Dynamic14" woofer; four 41/2" midranges;21/2" x 13/4" tweeter800 Hz; 2 kHz4 ohms200 watts (23 dBW)Biamplification

HEDCerwin Vega, Inc.12250 Montague St.Arleta, Calif. 91331

U-351PriceDimensionsWeightTypeDrivers

Response

$37532H x 19W x 173/4D105 lbs.Vented15" cone bass; 6" cone midrange;1" voice -coil horn tweeter32 Hz to 17 kHz, +4 dB re 103 dBSPL at 1 meter at 1 watt

CrossoverImpedanceMin. powerMax. powerControlsFeaturestweeter

UT -12RPriceDimensionsWeightTypeDrivers

700 Hz; 4 kHz8 ohms5 watts (7 dBW)100 watts (20 dBW)Midrange; tweeterCircuit breaker protection for

$390391/2H x 151/2W x 15075 lbs.Ported reflex12" cone bass; two 6" cone mi-dranges; 1" voice -coil horn tweeter


Crossover 700 Hz; 4 kHzImpedance 8 ohmsMin. power 5 watts (7 dBW)Max. power 80 watts (19 dBW)Controls Midrange; rear midrange; tweeterFeatures Circuit breaker protection fortweeter; rear -reflecting driver

SW -12PriceDimensionsWeightTypeDriversResponse

ImpedanceMin. powerMax. power


Response

CrossoverImpedanceMon. powerMax. powerControlsFeatures'Nect4?(


Response

CrossoverImpedanceMin. powerMax. powerControlsFeaturestweeter

$28015H x 251/2W x 151hD42 lbs.Ported reflex12" cone bass38 Hz to 150 Hz, ± 4 dB re 90 dBSPL at 1 meter at 1 watt8 ohms5 watts (7 dBW)100 watts (20 dBW)

$19525H x 151/2W x 11D37 lbs.Ported reflex12" cone bass; 1" voice -coil horntweeter45 Hz to 17 kHz, ±4 dB re 96 dBSPL at 1 meter at 1 watt2 kHz8 ohms5 watts (7 dBW)60 watts (17.75 dBW)TweeterCircuit breaker protection for

$8514H x 10W x 8D12 lbs.Ported reflex6" cone bass; 1" voice -coil Dhormtweeter60 Hz to 20 kHz, +4 dB re 90 dBSPL at 1 meter at 1 watt3 kHz8 ohms5 watts (7 dBW)40 watts (16 dBW)TweeterCircuit breaker protection for

Models also availableU-321, $265; U-15, $325; U-123,$215; U-10, $170

HITACHIHitachi Sales Corp. of America401 W. Artesia Blvd.Compton, Calif. 90220

HS -430PriceDimensionsWeightTypeDriversResponse

CrossoverImpedanceMax. power

$399.95261/4H x 141/2W x 14 15/16D46 lbs. 3 oz.VentedWoofer; midrange; tweeter35 Hz to 20 kHz, -15 dB re 92 dBSPL at 1 meter at 1 watt700 Hz; 4 kHz8 ohms120 watts (20.75 dBW)

Controls DualFeatures Three-way speaker system withexclusive Hitachi metal cone and patented gath-ered edge

HS -371PriceDimensionsWeightTypeDriversResponse

CrossoverImpedanceMax. powerControls

$199.95233/4H x 141/2W x 123/41335 lbs. 3 oz.Sealed acoustic suspensionWoofer; Midrange; tweeter45 Hz to 20 kHz, ±-15 dB re 90dBSPL at 1 meter at 1 watt1.5 kHz; 6 kHz8 ohms60 watts (17.75) dBW)Tweeter (±3 dB)

Features Clean performance at all frequen-cies; exceptional power -handling capacity; attrac-tive decorator -styled cabinets; easily removablematte grille cloth

HSA-3100Price $100Dimensions 141/2H x 231/2W x 113/4DWeight 28 lbs. 4 oz.Type VentedDrivers Woofer; midrange; tweeterResponse 45 Hz to 20 kHzImpedance 8 ohmsMax. power 50 watts rms (17 dBW)Features Same as Model HSA-3120

Models also availableHS -330, $250, HSA-3120, $150

IMPACTUnitronex Corp.1171 Landmeier Rd.Elk Grove, Ill. 60007

Impact 8PriceDimensionsWeightType

Drivers

Response


$39926 4/5H x 17 3/10W x 12 3/5D64 lbs.Balanced; ducted -port speakersystem with time -aligned transduc-ers12" woofer; 7" midrange; 2' x 5"horn tweeter30 Hz to 23 kHz, 105 dB SPL at 1meter at 1 watt300 Hz; 7 kHzB ohms (nominal)10 watts (10 dBW)150 watts (21.75 dBW)Tweeter; midrange (±3 dB)

Impact 6Price $299

Models also availablernna, t 4 5199 Impact 2

INFINITYInfinity Systems, Inc.7930 Deering Ave.Canoga Park, Calif. 91304

$149


Reference Standard 4.5Price $3,450Dimensions 641/21-I x 261/2W x 141/2DWeight 190 lbs.Drivers Four EMIT' tweeters; two 12" In-

finity -Watkins dual drive wooferswith polypropylene cone; four -electromagnetic induction EMIT'"midranges

Response 24 Hz to 32 kHz, + 3 dBCrossover 150 Hz; 5 kHzImpedance 4 ohmsMin. power 100 watts (20 dBW)Max. power 500 watts (27 dBW)Controls Separate crossover control unit to

adjust output levels of woofers andmidrange

Features Oak and oak veneer; brown grille

Reference Standard 1.5Price $470Dimensions 26'/2H x 15W x 11DWeight 36 lbs.Drivers EMIT'" tweeter; 12" Watkins -In-

finity dual drive polypropylenewoofer; polypropylene midrange

Response 38 Hz to 32 kHz, +3 dBCrossover 350 Hz; 5 kHzImpedance 4 ohmsMin. power 60 watts (17.75 dBW)Max. power 250 watts (24 dBW)Features Oak and oak veneer; dark browngrille

Quantum Jr.Price $299Dimensions 25H x 14'/2W x 12DWeight 50 lbs.Type DynamicDrivers 12" woofer; 1/2" dome midrange; In-

finity EMIT'" tweeterResponse 40 Hz to 32 kHz, +3 dBCrossover 600 Hz; 4 kHzImpedance 4 ohmsMin. power 25 watts (14 dBW)Max. power 200 watts (23 dBW)Controls Midrange; tweetersFeatures Optional metal pedestals

QbPrice $207Dimensions 25H x 14'/2W x 12DWeight 43 lbsType DynamicDrivers 10" woofer; 4" midrange; Infinity

EMIT'" tweeterResponse 42 Hz to 32 kHz, +3 dBCrossover 600 Hz; 4 kHzImpedance 4 ohmsMin. power 15 watts (11.75 dBW)Max. power 150 watts (21.75 dBW)Controls MidrangeFeatures Optional metal pedestals

QePrice $127Dimensions 18H x 12W x 10DWeight 22 lbs.Type DynamicDrivers 8" O woofer (butyl surround); EMIT

tweeterResponse 47 Hz to 32 kHz. +3 dBCrossover 2.5 kHzImpedance 4 to 8 ohmsMin. power 10 watts (10 dBW)Max. power 100 watts (20 dBW)Features Rotatable tweeter; automatic mir-ror -imaging

Models also availableReference Standard 2 5, $836; Co-lumn II, $369; 3000B, $235, Oa,$175

INNOTECHInnotech Audio Systems182 Henry St.Brooklyn, N.Y. 11201


ResponseCrossoverImpedanceMin_ powerMax. power

$42736'/2H x 101/2W a 153/eD55 lbs.Asymmetric transmission lineTwo 5" Bextrene woofers; one 1 V2Mylar dome midrange; 1" Mylardome tweeter35 Hz to 20 kHz, +3 dB3 5 kHz, 7.5 kHz8 ohms35 watts (15.5 dBW)200 watts (23 dBW)

Controls Fuse protectionFeatures Asymmetrical geometry to elimi-nate creation of standing waves inside and outsideof enclosure; narrow enclosure to allow full radia-tion of sound waves resulting in wine dispersion

JANISJanis Audio Associates, Inc.2889 Roebling Ave.Bronx, N.Y. 10461

W-1 SubwooferPrice $695Dimensions 171/2H x 22W x 22D (floor standing)Weight 90 lbs.Type Slot -loadedDrivers 15" dynamicResponse 30 to 100 Hz, + 1 dB re 85 dB SPL

into hemispherical soaceExternal electronic crossover 18dB/octave at 100 Hz8 ohms60 watts (18 dBW) continuous200 watts (23 dBW) continuous;system is fused to protect againstamplifier instability

Controls Level (when used with Interphasecrossover amp)

Features Designed to extend bass responseof high -quality wide -range speakers; harmonic dis-tortion components of 1% or less; individual cali-bration report supplied with each speaker; to beused in biamplified mode (crossovers available)

Crossover

ImpedanceMm. powerMax. power

Models also availableW-2 Subwoofer, $495

JANSZENJanszen Electrostatic bySoundmates796 29th Ave., S.E.Minneapolis, Minn. 55414

Z-40PriceDimensionsWeightTypeDrivers

Response

CrossoverImpedance

$53049)/21-1 x 131/4W x 131/4D64 lbs.Dynamic/ electrostatic10" woofer; passive radiator; 2 mid -frequency electrostatic tweeters; 2high -frequency electrostatic tweet-ers33 Hz to 2 kHz, +3 dB re 86 dBSPL at 2 volts at 1 meter; 26 Hz to30 kHz, +6 dB800 Hz; 4 kHz4 ohms

Min. power 20 watts (13 dBW)Max power 100 watts (20 dBW)Controls Tweeter; midrangeFeatures Low frequencies extended by 4 -pole passive radiator system; bipolar radiation ofmids and highs

Z-10PriceDimensionsWeightTypeDrirers

Response

CrossoverImpedanceMm powerMax powerCortrols

$31524H x 131/4W x 11D41 lbs.Dynamic/electrostatic10" woofer; 2 electrostatic tweet-ers28 Hz to 30 kHz, +3 dB re 82 dBSPL at 2 volts at 1 meter; 28 Hz to30 kHz, ±6 dB800 Hz4 ohms20 watts (13 dBW)75 watts (18.75 dBW)Tweeter

Models also available30 $430, Z-20,$375

JBLJames B. Lansing Sound, Inc.8530 Balboa Blvd.Northridge, Calif. 91329

L-212PriceDimensionsWe ghtTypeDrivers

Crc ssoverImpedanceMir. powerMax. powerControls

3%3,1'0: x 17W x 13D225 lbs.Dynamic12" cone woofer; 8" cone mi-drange; 5" cone midrange; 1" dometweeter70 Hz; 800 Hz; 3 kHz8 ohms10 watts (10 dBW)300 watts (24.75 dBW)Continously variable tweeter andmidrange; ultra -bass and phasecontrols

Features 12" self -powered common bassloudspeaker in a third enclosure (dim.: 191/4H x181/2W x 181/4D); system sensitivity: 91 dB SPL at1 meter at 1 watt


CrossoverImpedanceMin. powerMax. powerControlsFeatures1 watt

L-150PrceDimensionsWeightTypeDrivers

CrossoverImpedanceMn. powerMax. powerControls

$87548Y4H x 20 3/16W x 153/0121 lbs.Passive radiator14" direct bass radiator with 15"passive radiator; 5" direct mi-drange radiator; ultra -high -fre-quency ring radiator800 Hz; 5 kHz8 ohms10 watts (10 dBW)400 watts (26 dBW)Tweeter; midrangeSensitivity: 90 dB SPL at 1 meter at

$595411/2H x 17W x 13D80 lbs.Passive radiator12" direct bass radiator with 12"passive radiator; 5" direct mi-drange radiator; 1" dome tweeter1 kHz; 4 kHz8 ohms10 watts (10 dBW)300 watts (24.75 dBW)Tweeter; midrange

1980 Edition 57

Features Sensitivity: 88 dB SPL at 1 meter at

4311WXPriceDimensionsWeightTypeDrivers


ev-i!'



$365231/2H x 141/2W x 113/4049 lbs.Bass reflex12" direct radiator woofer; 5" directradiator midrange; 11/2" directradiator tweeter1.5 kHz; 6 kHz8 ohms10 watts (10 dBW)300 watts (24.75 dBW)Tweeter; midrangeSensitivity: 91 dB SPL at 1 meter at

$25023H x 15W x 12D44 lbs.Bass reflex10" direct radiator woofer; 1" domeradiator tweeter1.8 kHz8 ohms10 watts (10 dBW)150 watts (21.75 dBW)TweeterSensitivity: 88 dB SPL at 1 meter at

RADIANCE SERIES




CrossoverImpedanceMtn. powerMax. power

$219.95271/2H x 171/8W x 12,/eD44 lbs. 8 oz.Bass reflex12" direct radiator woofer; 5" directradiator midrange; 3" direct radia-tor tweeter600 Hz; 3 kHz8 ohms10 watts (10 dBW)200 watts (23 dBW)Three -position high frequency

$139.95211/2H x 131/2W x 11 3/16D27,/z lbs. 8 oz.Bass reflex8" direct radiator woofer; 3" directradiator tweeter2 kHz4 ohms10 watts (10 dBW)80 watts (19 dBW)

Models also availableL-300, $1,250; L-222, $895; L-110,$410; L-50, $325; L-19, $175; 702,$179.95

JENNINGS RESEARCHContrara Research, Inc.5719 South Avalon Blvd.Los Angeles, Calif. 90011

Tri-AnglePrice $330Dimensions 291/2H x 18W x 14DWeight 60 lbs.Type VentedDrivers 1" dome tweeter; 1W

drange; 12" wooferdome mi-


ContraraPriceDimensionsWeightTypeDriversResponseCrossoverImpedanceMin. powerMax. power

89 dB SPL at 1 meter at 1 watt1.2 kHz; 5 kHz6 ohms15 watts (11.75 dBW)150 watts (21.75 dBW)Tweeter; midrangeLinear -phase coherency

Pedestal$28033H x 111/2W x 111/2D40 lbs.Acoustic suspensionTwo 8" woofers; 1" tweeter92 dB SPL at 1 meter at 1 watt2.5 kHz8 ohms10 watts (10 dBW)100 watts (20 dBW)

Piccola Bass CubePrice $2,DimensionsWeightTypeDriversResponseCrossoverImpedanceMin. powerMax. powerFeatures

21Y2H x 18W x 18D40 lbs.Acoustic suspension12" woofer92 dB SPL at 1 meter at 1 watt80 Hz8 ohms30 watts (14.75 dBW)200 watts (23 dBW)Common bass subwoofer

Contrara TowerPrice $210Dimensions 28'/2H20 x 111/2W x 111/2DWeight 35 lbs.Type Acoustic suspensionDrivers 10" woofer; 1" tweeterResponse 89 dB SPL at 1 meter at 1 wattCrossover 2.5 kHzImpedance 8 ohmsMin. power 15 watts (11.75 dBW)Max. power 100 watts (20 dBW)Controls Tweeter

Models also availableVector Two, $270, Vector One,$190; Contrara Rectangle, $145;Piccola Two, $110

JENSENJensen Sound Labs4136 N. United ParkwaySchiller Park, III. 60176

System BPrice $549.95Dimensions 333/4H x 16'/2W x 113/4D (including

base)Weight 78 lbs.Type VentedDrivers 12" woofer; 11/4" upper midrange;

1" main tweeter; 2" rear -firingtweeter

Response 27 Hz to 21 kHz, +2, -4 dB re 90 dBSPL at 1 meter at 1 watt

Crossover 300 Hz; 2 kHz; 8 kHzImpedance 8 ohmsMm. power 9 watts (9.5 dBW)Max. power 150 watts (21.75 dBW)Controls Tweeter; upper midrangeFeatures Power protection circuit; optimizedpower response; 5 -year transferable warranty;oak veneer saddle base with variable tilt verticallyaligned drivers; impedance compensated cross-over network

LS -5bPrice $279.95Dimensions 26H x 153/4W x 135/8D

Weight 50 lbs.Type Acoustic suspensionDrivers 12" woofer; two 31/2" cone mi-

drange drivers; 1" soft -dometweeter


Crossover 1 kHz; 4 kHzImpedance 8 ohms nominalMm. power 10 watts (10 dBW) continuousMax. power 90 watts (19.5 dBW) continuousControls Tweeter; midrangeFeatures Full 5 -year transferable warranty


$169.95241/2H x 15W x 10D28 lbs.Acoustic suspension10" woofer; 31/2" midrange; 2" conetweeter

Response 60 Hz to 18 kHz, +3 dBCrossover 1.5 kHz; 4 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 50 watts (17 dBW)Features Vertically aligned drivers; full 5 -

year transferable warranty

LS -2bPriceDimensionsWeightTypeDriversResponse


$99.95183/4H x 11W x 97/xD18 lbs.Acoustic suspension8" woofer; 2" cone tweeter65 Hz to 18 kHz, ±3 dB re 91 dBSPL at 1 meter at 1 watt4 kHz8 ohms nominal10 watts (10 dBW) continuous50 watts (17 dBW) continuousFull 5 -year transferable warranty

Models also availableLS -6b, $369.95, LS -4b, $219.95;LS -3b, $154 95; 20, $89.95

JONSON SPEAKERSSpeakers and AssociatedSound, Inc.420 Austin PlaceBronx, N.Y. 10455

3-DM-2000/WDR-2H, "ThePresident"Price $799Dimensions 423/4H x 213/4W x 20DWeightTypeDrivers

120 lbs.Acoustic suspensionTop unit "Pentagon": 5 midrangedomes, 3 dome tweeters; bassunit two 10" woofers


Crossover 2 1 kHz; 4 kHzImpedance 15 ohmsMin. power 50 watts (17 dBW)Max. power 140 watts (21.5 dBW)Controls NoneFeatures Pentagon: 540 -degree radiationpattern; all dome drivers

3DM-1/WHS-2, "The Diplomat"PriceDimensionsWeightTypeDrivers

$45027H x 24W x 18D80 lbs.Acoustic suspensionTop unit, "Pentagon Junior": 4 full -range drivers, 1 tweeter; bass unit:two 10" woofers facing downwards

5S High Fidelity's Buying Guide to Speaker Systems

Jennings Contreras Pedestal

ResponseCrossoverImpedanceMax. power

30 Hz to 20 kHz350 Hz, 5 kHz4 ohms70 watts (18.5 dBW)

J11 Model 149

Models also available3-DM-2/WDR-4M. ' The States-man". $640; 3-DM-2000/WDR-1 M, "The Ambassador", $605

JR LOUDSPEAKERSH & H International3047 W. Henrietta RoadRochester, N.Y. 14623

JR-149PriceDimensionsWeightTypeDrivers

$550/pr145/8H x 9W x 9D12 lbsSealed cabinetBextrene cone woofer, soft -dometweeter

Response 70 Hz to 20 kHz, -4 3 dB re 90 dBSPL at 1 meter at 1 watt

Crossover 3 kHzImpedance 16 ohmsMin. power 20 watts (13 dBW)Max. power 100 watts (20 dBW)Controls NoneFeatures Aluminum cylinder

JR Super WooferPriceDimensionsWeightDriversResponseImpedanceMax. power

$39520H x 131/2W x 131/2D50 lbs.Special 8" driver30 Hz to 150 kHz8 ohms60 watts (17 75 dBW)

Controls NoneFeatures Highly damped reflex electromag-netic damping

Models also availableIR 50 S825/pr

JVCU.S. JVC Corp.Hi-Fi Division58-75 Queens MidtownExpresswayMaspeth, N.Y. 11378

Zero 9PriceDimensionsWeightType

1980 Edition

$700411/4H x 16 1/16W x 161/4D92 lbs 6 4 oz.Bass reflex

Koss Cif /1030

Drivers Two 12' cone woofers; 3 15/16'dome cone midrange, 2 1/16" x 5/16" ribbon tweeter

Response 25 Hz to 50 kHz, 92 dB SPL at 1meter at 1 watt

Crossover 450 Hz, 5 5 kHzImpedance 6 ohmsMax. power 150 watts (21 75 dBW)Controls Midrange, tweeter

Zero 3PriceDimensionsWeightTypeDrivers

$32022 13/16H x 125/8W x 133/8D39 lbs 9 6 ozBass reflex10" cone woofer; 23/8" dome conemidrange; 2 1/16" x 5/16" ribbontweeter

Response 40 Hz to 50 kHz, 91 dB SPL at 1

meter at 1 wattCrossover 1 5 kHz; 7 kHzImpedance 6 ohmsMax. power 75 watts (18 75 dBW'Controls Midrange, tweeter

SK -700 IIPrice $180Dimensions 22'/4H x 13'/2W x 131/eDWeight 30 lbs. 14 oz.Type Bass reflexDrivers 10" cone woofer; 5' cone mi-

drange; 1" dome tweeterResponse 35 Hz to 40 kHz, 93 dB SPL at 1

meter at 1 wattCrossover 900 Hz; 9 kHzImpedance 8 ohmsMax. power 70 watts (18 5 dBW)Controls Midrange, tweeter

SK -500 IIPrice $209 90/prDimensiors 195/eH x 121/2W x 12'/eDWeight 23 lbs 32 oz.Type Bass reflexDrivers 10" woofer, 23/8" cone tweeterResponse 40 Hz to 20 kHz, 92 dB SPL at 1

meter at 1 wattCrossover 2 kHzImpedance 8 ohmsMax. power 50 watts (17 dBW:

S -M5PriceDimensionsWeightTypeDriversResponse

CrossoverImpedanceMax. power

$299/pr.

9 3/16H x 5 13/16W x 5 29/32D9 lbs 3 ozAcoustic suspension51/2" cone woofer, 1" dome tweeter45 Hz to 20 kHz, 88 dB SPL at 1

meter at 1 watt25 kHz8 ohms80 watts (19 dBW)

Look 3090

Martin TL -6050

Models also availableZero 5, $400, SK -1000 II, $280,SK -600 II, $240/pr , SK -400 II,

$150/pr , S -M3, $169 90/pr.

KA/KUSTOM ACOUSTICSKustom Acoustics662.1 W. Irving Park RoadChicago, Ill. 60634

Titai LabyrinthPrice $1,995Dimensions 54H x 30W x 18D (with base)Weig it 375 lbsType Dual, 8' double helical tapered

acoustical trapezoidal lineDrivers Two 12" rubber composition cone

woofers; two 61/2" plastic cone mi-dranges; 11/4" magnet -liquid tweet-ers; 1" dome magnetic liquidsupertweeter

Response 14 Hz to 22 kHz, ±2'/2 dBCrossover 60 Hz; 2 kHz; 7.5 kHzImpedance 4 ohms (3.2 ohms min; 9 ohms

max)Min. power 15 watts (11.75 dBW) per channel

into 4 ohmsMax. power 300 watts (24.75 dBW) per channel

into 4 ohmsCortrols 4 level controlsFeatures Complete with base and casters;may be bi- or tnamped, fuse protection, phase -corrected; transducers have T-shaped pole piecesand mammoth magnet assemblies

TASPri :eDimensionsWE ightTy 3e

Dr Vera

Response

CrossoverImpedance

Min. power

$99940H x 24W x 18D225 lbsDual, half wavelength taperedacoustical trapezoidal lineTwo 12" cone woofers; 5" Bextrenecone midrange, 11/4" dome midt-weeter; 1" dome supertweeter25 Hz to 22 kHz, + 2.5 dB re 97 dBSPL at 1 meter at 1 watt350 Hz; 2.5 kHz; 7.5 kHz4 to 6 ohms (4 recommended; 2ohms min; 9 ohms max)10 watts (10 dBW) per channel into8 ohms

Max. power 250 watts (24 dBW) per channelinto 8 ohms

Controls 3 T -pads (heavy-duty wire -wound)Features KA Van -I -Vent (adjusts systemresonance); may be bi- or tramped; fuse protec-ton, phase -corrected; magnetic -liquid midtweeters

Trapezoid SubwooferPrice $399

59

Dimensions 40H x 16W x 14DWeight 85 lbs.Type Tapered acoustical trapezoidal

line/labyrinthDrivers 12" long excursion woofer with syn-

thetic composition deep coneResponse 20 Hz to 2 kHz, ±2r dBCrossover 40 Hz; 90 Hz; 175 Hz or no internal

crossoverImpedance 8 ohmsFeatures Four built-in sets of terminals inback; biamp with or without electronic crossover

ZoidPriceDimensionsWeightTypeDrivers

$189171/2H x 101/2W x 9D30 lbs.Tapered acoustical trapezoidal line8" woofer; 1" magnet -liquid dometweeter

Response 36 Hz to 22 kHz, ±2.5 dB re 92 dBSPL

Crossover 1.8 kHzImpedance 6 or 8 ohmsMin. power 10 watts (10 dBW)Max. power 100 watts (20 dBW)Controls Level controlFeatures Fuse protection

Models also availableAmp Eater, $1,499, Labyrinth Sub -woofer, $699; Impulse Subwoofer,$299

KEFIntratecP.O. Box 17414Dulles International AirportWashington, D.C. 20041


$95038H x 17 9/10W x 16 3/10D80 lbsCoherent phase12" woofer; 5" cone midrange; 1l/2"dome tweeter

Response 30 Hz to 25 kHz, +2 dBImpedance 8 ohmsMin. power 40 watts (16 dBW)Max. power 200 watts (23 dBW)Controls Midrange; tweeter levelFeatures LED "Listening Window" power in-dicator, midrange/tweeter assembly can berotated for best stereo placement

104aBPriceDimensionsWeightTypeDrivers



ImpedanceMin. powerMax. power

till

$425 (assembled), $250 (kit)24 4/5H x 13Wx 10 1/5D36 lbs.Reflex8" woofer; 9" x 13" drone; 3/4" dometweeter50 Hz to 20 kHz, ±2 dB45 Hz; 3 kHz8 ohms15 watts (11.75 dBW)100 watts (20 dBW)Midrange levelWalnut or teak wood cabinet

$29526 7/10H x 11W x 12 2/5D30 lbs.Infinite baffleTwo: 8" woofers; 1" dome tweeter60 Hz to 20 kHz, ±3 dB re 87 dBSPL at 1 meter at 1 watt8 ohms10 watts (10 dBW)100 watts (20 dBW)

Features Satin black finish; optional floorstand

CorelliPrice $215Dimensions 18H x 8 3/5W x 11DWeight 20 lbs.Type Infinite baffleDrivers 8" woofer; 3/4" dome tweeterResponse 50 Hz to 30 kHz, ±3 dBCrossover 3.5 kHzImpedance 8 ohmsMm. power 25 watts (14 dBW)Max. power 50 watts (17 dBW)Features Walnut or teak wood cabinet

Models also availableCantata, $625 (assembled), $395(kit), Calinda, $350; 101, $250303, $175

KENWOODKenwood Electronics, Inc.75 Seaview DriveSecaucus, N.J. 07094

SevenPriceDimensionsWeightTypeDrivers

$1,25037H x 181/2W x 15D121 lbs.Acoustic suspension14" woofer; 41/4" midrange, 11/2

tweeter; 3/4" supertweeterResponse 20 Hz to 35 kHz, 94 dB SPL at 1

watt at 1 meterCrossover 400 Hz; 4 kHz; 8 kHzImpedance 8 ohmsMm. power 50 watts (21.75 dBW)Max. power Midrange; tweeter; supertweeter

LS -1600Price $550Dimensions 27 15/16H x 15 11/32W x 12 23/

32DWeight 64 lbs 14 oz.Type VentedDrivers 13" woofer; 51/4" midrange; high -

frequency driverResponse 32 Hz to 20 kHz, 92 dB SPL at 1

meter at 1 wattCrossover 900 Hz; 5 kHzImpedance 8 ohmsMin. power 50 watts (17 dBW)Max. power 120 watts (20.75 dBW)Controls Mid/high frequencyFeatures Linear response

LS -408BPriceDimensionsWeightTypeDrivers

$31029H x 161/2W x 141/4D50 lbs.Vented12" woofer; 43/4" midrange; 13/4tweeter

Response 40 Hz to 20 kHz, 92 dB SPL at 1watt at 1 meter

Crossover 2 kHz; 5 kHzImpedance 8 ohmsMm. power 20 watts (13 dBW)Max. power 160 watts (22 dBW)Controls Mid/high frequency

LS -405BPriceDimensionsWeightTypeDriversResponse


$175231/2H x 131/2W x 123/4D30 lbs.Vented10" woofer; 13/4" tweeter50 Hz to 20 kHz, 93 dB SPL at 1watt at 1 meter2.5 kHz8 ohms10 watts (10 dBW)100 watts (20 dBW)

Models also availableLS -1900, $1,165; LS -1200, $365;LS -407B, $245; LS -404B, $285/pr.

KINETIC AUDIOINTERNATIONALKinetic Audio International,Ltd.6624 W. Irving Park RoadChicago, III. 60634

The LabyrinthPrice $1,495DimensionsWeightType

Drivers

ResponseCrossoverImpedanceMin. power

Max. power

ControlsFeatures

52H x 16W x 18D (with base)185 lbs.9' tapered acoustical trapezoidallabyrinth12" synthetic composition conewoofer; 61/2" plastic cone mi-drange; 11/4" synthetic dome trans-mission line midtweeter; 1" domesupertweeter18 Hz to 22 kHz, ±2.5 dB90 Hz; 2 kHz; 7.5 kHz6 ohms (5 ohms min; 11 ohms max)15 watts (11.75 dBW) per channelinto 8 ohms200 watts (23 dBW) per channelinto 8 ohms (program material)3 T -pads (super duty wire -wound)May be bi- or triamped with or with-

out electronic crossover(s) (14 terminals includedfor all possible connections applications); fuse pro-tection; phase -coherent; magnetic -liquid tweeters;linear phase; mirror -matched walnut veneer andcomponents

STAT"PriceDimensionsWeightTypeDrivers

$399171/2H x 101/2W x 9D40 lbs.Tapered acoustical trapezoidalTwo 5" Bextrene midwoofers; 11/4"synthetic dome transmission linemagnetic liquid tweeter


Crossover 2.5 kHzImpedance 4 ohmsMin. power 10 watts (10 dBW) into 8 ohmsMax. power 200 watts (23 dBW) into 8 ohmsControls T -pads (heavy-duty wire wound)Features Fuse protection; phase correctedmid/woofers have 3/4 P -P excursion and 25 oz.magnets; rack -mountable with optional ears; wal-nut veneer mirror -matched; components also mir-ror -matched; linear -phase design

IMPPriceDimensionsWeightTypeDrivers

$29924H x 14W x 4D60 lbs.Tapered acoustical line12" woofer; PA" magnet -liquidtweeter; (synthetic dome) 5" Bex-trene midrange with T-shaped polepiece


Crossover 200 Hz; 2 kHzImpedance 6 to 8 ohmsMin. power 10 watts (10 dBW)Max. power 200 watts (23 dBW)Controls T -pads (2) wire -woundFeatures Fuse protection; mirror -matchedwalnut vener over 1" thick high density fiberboard;mirrored components; infinite line enclosure ontweeter

Models also availableTrapezoid " $699; Impulse'" CRM,$499


KIRKSAETERKirksaeter-Saga Hi-Fi, Inc.398 South Pickett St.Alexandria, Va. 22304

Monitor 400PriceDimensionsWeightTypeDrivers


$1,400263/4H x18'/sW x 133/4D59 lbs. 8 oz.Acoustic suspensionFour 8" long excursion woofer; four11/2"dome midranges. four 1" dometweeters16 Hz to 25 kHz (DIN)650 Hz; 4.5 kHz4 to 830 watts (14.75 dBW)400 watts (26 dBW)Two tweeter, 2 midrange controlsadjustable from 0 to 6 dB

Features All drivers fused; designed fordisco operation; speaker radiates sound from thetop, both sides and front for panoramic dispersion;walnut finish

Monitor 250Price $850Dimensions 263'4H x 183/2W x 93/4DWeight 46 lbs. 5 oz.Type Acoustic suspensionDrivers Two 10" long excursion woofers;

two 11/2" dome midranges; two 1"dome tweeters

Response 18 Hz to 25 kHz (DIN)Crossover 650 Hz; 4.5 kHzImpedance 4 to 8Min. power 20 watts (13 dBW)Max. power 250 watts (24 dBW)Controls Two tweeter, 2 midrange controls

adjustable from 0 to 6 dBFeatures Same as Monitor 400

MonitorPriceDimensionsWeightTypeDrivers


100$300161/4H x 101/2W x 8D18 lbs.Acoustic suspension8- woofer; 11/2" dome midrange; 1"dome tweeter28 Hz to 25 kHz (DIN)650 Hz; 4.5 kHz4 to 8 ohms10 watts (10 dBW)100 watts (20 dBW)Tweeter (adjustable 0 to 6 dB); mi-drange (adjustable from 0 to 6 dB)

Models also availableMonitor 150 $600, Monitor 120,$375

KLEIN & HUMMELGotham Audio Corp.741 Washington St.New York, N.Y. 10014

0-92PriceDimensionsWeightTypeDriversResponse

CrossoverMin. power

Max. power

1980 Edition

$3,360311/2H x 171/4W x 113/4D66 lbs.Acoustic suspension4 cone50 Hz to 16 kHz, +1.5 dB re 80 dBSPL at 1 meter at 1 watt500 Hz, 3 kHzLow frequency; 120 watts (20.75dBW); mid -frequency: 60 watts(17.75 dBW); high -frequency: 60watts (17 75 dBW)240 watts (23.75 dBW) (self -pow-ered)

Controls Woofer; tweeterFeatures Plug-in compensators for roomplacement, 0, 1, 2, or 3 surfaces


KLHKLH Research & DevelopmentCorp.145 University Ave.Westwood, Mass. 02090

KLH-1Price

DimensionsWeightType

Drivers

Response

CrossoverImpedanceMm. powerMax. powerControls

$',100/pr. (including Analog BassComputer '")30H x 101/4W x 11D55 lbs. ea.Computer -controlled, vented sixth -order Butterworth alignmentTwo 8" die-cast frame dynamicbass units, with natural polypropy-lene formed cones; 41/2" midrangewith formed cone of natural poly-propylene; 1" dome tweeter withbutyl -loaded synthetic soft dome30 Hz to 20 kHz, ±3 dB re 86 dBSPL at 1 meter at 1 watt750 Hz; 3 kHz4 ohms40 watts (16 dBW)250 watts (24 dBW)Position, power indicator, tape, in/out (on computer)

Features Utilizes Analog Bass Computer'for extended bass response in conjunction with hi -flux motor system; proprietary drivers with naturalpolypropylene cones; includes speaker stand

KLH-3Price $450 (including Analog Bass Com-

puter"Dimensions 12'/2H x 81/2W x 6DWeight 25 lbs.Type Computer -controlled, vented sixth -

order Butterworth alignmentDrivers 6" die-cast frame dynamic bass

unit with natural polypropylenecone; one 1' dome tweeter with bu-tyl loaded synthetic soft dome


Crossover 2.75 kHzImpedance 4 ohmsMin. power 40 watts (16 dBW)Max. power 200 watts (23 dBW)Controls Position tape, in/out (on computer)Features Utilizes Analog Bass Computer'"for extended bass response in conjunction with hi -flux motor system; proprietary drivers with naturalpolypropylene cones

319BPriceDimensionsWeightTypeDrivers


327PriceDimensiorsWeightTypeDrivers

$230241/2H x 141/2W x 11Y4D40 lbs.Tuned phase inverter12" woofer; 51/4' cone midrange; 1"soft -dome tweeter; 21/2" conetweeter on rear52.5 Hz to 22 kHz1.1 kHz; 3 kHz4 ohms10 watts (10 dBW)100 watts (20 dBW:Midrange; tweeter

$179231/4H x 14W x 103/4D29 lbs.Acoustic suspension10" woofer; 4" cone midrange; 21/2"cone tweeter


331BPriceDimensionsWeightTypeDriversResponseCrossoverImpedanceMin. powerMax. power

Models

55 Hz to 18 kHz900 Hz; 3.6 kHz8 ohms20 watts (13 dBW)80 watts (19 dBW)Midrange; tweeter

$10021H x 12W x 83/4D20 lbs. 8 oz.Acoustic suspension8" woofer; 21/2" cone tweeter64 Hz to 18 kHz3 kHz8 ohms8 watts (9 dBW)50 watts (17 dBW)

also availableKLH-2, $660/pr. (including AnalogBass Computer"); KLH-4, $290/pr., 337, $199, 317B, $130

KLIPSCHKlips:h & AssociatesP.O. Box 688Hope, Ark. 71801

KlipschornPrice $1,275 (walnut oil, walnut lacquer);

$1,775 (rosewood, teak, oak,cherry); $950 (birch, raw, black);$844 (decorator model in birch,raw, black)

Dimensions 52H x 31Y4W x 281/2D (walnut,rosewood. teak, oak, cherry);501/2H (birch, raw, black); 493/4H(decorator model)

Weight 180 to 240 lbs., depending on styleType HornDrivers 15" bass; compression midrange;

compression high frequencyResponse 35 Hz to 17 kHz, + 5 dBCrossover 400 Hz; 6 kHzImpedance 8 ohmsMin. power 1 watt (0 dBW)Max. power 105 watts (20.25 dBW)

Belle KlipschPrice $1,045 (walnut oil, walnut lacquer);

$1,498 (rosewood, teak, oak,cherry)

Dimensions 353/4H x 301/4W x 183/4DWeicht 125 lbs.Type HornDrivers 15" bass; compression midrange;

compression high frequencyResponse 45 Hz to 17 kHz, +5 dBCrossover 400 Hz; 6 kHzImpedance 8 ohmsMin. power 1 watt (0 dBW)Max. power 105 watts (20.25 dBW)

HeresyPrice

DimensionsWe ghtTypeDrivers


$362 (walnut oil, walnut lacquer);$475 (rosewood, teak, oak,cherry); $311 (birch, raw, black)213/41-1 x 151/2W x 131/4D55 lbs.Dynamic12' bass; compression midrange;compression high frequency50 Hz to 17 kHz, +5 dB700 Hz; 6 kHz8 ohms1 watt (0 dBW)105 watts (20.25 dBW)

Models also availableLa Scala, $674 (birch, raw, black);$704 (birch lacquer); $731 (birchlacquer -stained); Cornwall, $638

81

(walnut oil, walnut lacquer); $813(rosewood, teak, oak, cherry),$495 (birch, raw, black)

KOSSKoss Corp.4129 North Port WashingtonAve.Milwaukee, Wis. 53212

CM/1030PriceDimensionsWeightTypeDrivers


CM/530PriceDimensionsWeightTypeDriversResponseCrossoverImpedanceMin. powerMax. powerControlsFeatures

$549.9539H x 161/W x 141/2D74 lbs.Vented10" woofer; two 41/2" midrangedrivers; 1" tweeter; 1" supert-weeter29 Hz to 19 kHz, -3 dB400 Hz; 2.5 kHz; 6 kHz7 ohms15 watts (11.75 dBW)200 watts (23 dBW)Midrange; tweeter; supertweeter

$229.9524H x 133/4W x 113/4D35 lbs.Passive radiator8" woofer; 1" tweeter36 Hz to 17 kHz, -3 dB3 kHz7/4 ohms15 watts (11 75 dBW)75 watts (18.75 dBW)TweeterMirror -imaged pairs

Models also availableCM/1020, $449.95, CM/1010,$349.95

LAFAYETTELafayette Radio Electronics111 Jericho TurnpikeSyosset, N.Y. 11791

1009PriceDimensionsWeightTypeDriversResponseImpedanceMin. powerMax. powerControlsFeatures

1005PriceDimensionsWeightTypeDriversImpedanceMin. powerMax. powerFeatures

$99.9924H x 141/2W x 101/2D40 lbs.Acoustic suspension12" woofer; 5" midrange; 3" tweeter40 Hz to 18 kHz8 ohms5 watts (7 dBW)55 watts (17.25 dBW) peakMidrange; tweeterSimulated birch finish

$59.9920H x 121/2W x 81/2D21 lbs.Acoustic suspension10" woofer; 21/2" tweeter8 ohms5 watts (7 dBW)50 watts (17 dBW) peakSimulated birch finish

Pip SpeakPrice $60DimensionsWeightType

Drivers

71/4H x 41/2W x 41/2D6 lbs.Acoustic suspension mini speakersystem4" woofer; 1" soft -dome tweeter

Response 80 Hz to 20 kHzCrossover 2.5 kHzImpedance 8 ohmsMin. power 12 watts (10.75 dBW)Max. power 50 watts (17 dBW)Features Die-cast aluminum cabinet; per-forated metal grille; includes adjustable mountingbrackets

Models also available1007. $79 99. 1003, $44.99; 1001.$29 99

LANCERLancer Electronics10530 Lawson River Ave.Fountain Valley, Calif. 92708

SC -8PriceDimensionsWeightTypeDrivers

Response


$359 5028H x 18W x 131/4D65 lbs.VentedTwo 12" woofers; 51/4" dome mi-drange; 3V2" dome tweeter20 Hz to 22 kHz, 92 dB SPL at 1meter at 1 watt500 Hz; 4.5 kHz8 ohms8 watts (9 dBW)

Max. power 120 watts (20.75 dBW)Controls Midrange; tweeterFeatures Genuine walnut veneers and solidscabinet: front -mounted controls; double-knit grille

SC -9TPriceDimensionsWeightTypeDrivers

$249.5038H x 12W x 12D57 lbs.Acoustic suspension10" woofer; 5" midrange; two dometweeters

Response 20 Hz to 20 kHz, 89 dB SPL at 1meter at 1 watt

Crossover 500 Hz; 4.5 kHzImpedance 8 ohmSMin. power 10 watts (10 dBW)Max. power 90 watts (19.5 dBW)Controls Midrange; tweeterFeatures Same as Model SC -7A

SC -11PriceDimensionsWeightTypeDrivers

$179221/41-1 x 121/2W x 10D38 lbs.Acoustic suspension10" woofer; 5" midrange; 21/4"

tweeterResponse 20 Hz to 20 kHz, 90 dB SPL at 1

meter at 1 wattCrossover 750 Hz; 6 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 50 watts (10 dBW)Controls midrange; tweeterFeatures Same as Model SC -7A

9335-2PriceDimensionsWeightTypeDriversResponse


$99.5025H x 141/4W x 113/4D33 lbs.Tubular; vented12" woofer; 21/4" tweeter30 Hz to 20 kHz, 93 dB SPL at 1meter at 1 watt3 kHz8 ohms5 watts (7 dBW)50 watts (17 dBW)Genuine oiled -walnut veneer;

white, gold and brown grilles

9711Price $54.50Dimensions 201/4H x 10W x 91/2D


ResponseCrossoverImpedanceMin. powerMax. powerFeaturesto 56 dB

WeightTypeDriversResponse

ImpedanceMin. powerMax. powerFeatures

19 lbs.Tubular vented8" full -range driver45 Hz to 15 kHz, 90 dB SPL at 1

meter at 1 watt8 ohms3 watts (4.75 dBW)30 watts (14.75 dBW)Same as Model 9535-2

Models also availableSC -7A, $299. SC -4A, $229; SC -10A, $149, 9534X, $69.50; SC -1,$34.50

LEAKRank Hi Fi, Inc.20 Bushes LaneElmwood Park, N.J. 07407



$96047H x 20W x 15D112 lbs.Transmission line15" woofer; 7" x 4" midrange; isot-weeter6 ohms35 watts (15.5 dBW)160 watts (22 dBW)Midrange; tweeterUpper-mid/high section swivels for

optimum dispersion

LINN PRODUCTS LTD.Audiophile Systems5750 Rymark CourtIndianapolis, Ind. 46250

DMS Isobarik$3.600/pr.30H x 15W x 16D95 lbs.Isobarik loadingTwo 9" x 12" woofers; two 5" mi-dranges; two 1" dome tweeters16 Hz to 20 kHz, ±3 dB360 Hz; 3 kHz4 ohms50 watts (17 dBW)500 watts (27 dBW)Instantaneous dynamic range of 54

Models also availableSARA Isobarik, $1 470/pr

MAGNEPLANARMagnepan, Inc.1645 9th St.White Bear Lake, Minn. 55110

MG-IIAPrice $825/pr.Dimensions 72H x 22W x 13/4DWeight 45 lbs.Type MagneplanarDrivers Woofer; tweeterResponse 45 Hz to 16 kHz, +4 dBCrossover 2.1 kHzImpedance 6 ohmsMin. power 30 watts (14.75 dBW)Max. power 200 watts (23 OW) continuousFeatures Mirror -imaged matched pair;purely resistive load

MG -IPrice $495/pr


Mama S-35

McIntosh XR-8

Dimensions 59H x 22W x 13/4DWeight 30 lbs.Type MagneplanarDrivers Woofer; tweeterResponse 50 Hz to 16 kHz, +4 dBCrossover 2.4 kHzImpedance 5 ohmsMin. power 30 watts (14 75 dBW)Max. power 200 watts (23 dBW)Features Mirror -imaged matched pair,purely resistive load

MARANTZSuperscope, Inc.20525 Nordhoff St.Chatsworth, Calif. 91311

H D-880PriceDimensionsWeightTypeDrivers

Response


Features

H D-660PriceDimensionsWeightTypeDrivers

Response


Features

H D-440PriceDimensionsWeightTypeDriversResponse

CrossoverImpedance

1980 Edition

$420261/2H x 15W x 113/4D56 lbs 10 oz.

VARI (Infinite baffle/ported)12" woofer, 5" midrange, 11/2" LPFdome tweeter, 1" LPF dome su-pertweeter30 Hz to 22 kHz, ±3 dB re 90 dBSPL at 1 meter at 1 watt750 Hz, 2 3 kHz, 5 kHz8 ohms10 watts (10 dBW)250 watts (24 dBW)Midrange, tweeter, and supert-weeter L -pad controlsLow stored energy loudspeakers

$270241/4H x 145/oW x 111/2D49 lbs.VARI-0." (Infinite baffle/ported)10" woofer; 5" midrange, 111/2"

dome tweeter35 Hz to 20 kHz, +3 dB re 88 dBSPL at 1 meter at 1 watt750 Hz, 2.5 kHz8 ohms10 watts (10 dBW)125 watts (21 dBW)Midrange and tweeter L -pad con-trolsLow stored energy loudspeakers

$110191/8H x 111/4W x 81/2D25 lbs 5 ozAcoustic suspension8" woofer, 31/2" midrange, tweeter45 Hz to 18 kHz, 1-3 dB re 87 dBat 1 meter at 1 watt2 Hz, 8 kHz8 ohms

MCS 8228

Min. power 10 watts (10 dBW)Max. power E0 watts (17 dBW)

Mk II SERIES

7 Mk IIPriceDimensionsWeightTypeDrivers

$180/pr251/2H x 143/4W x 111/2D49 lbs 5 ozAcoustic suspension12" woofer; 5" midrange 13/4"

tweeterResponse 35 Hz to 20 kHz. +3 dB re 88 dB

SPL at 1 meter at 1 wattCrossover 800 Hz; 2.5 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 200 watts (23 dBW)Controls Midrange and tweeter L -pad con-

trolsFeatures Low stored energy loudspeakers

5 Mk IIPriceDimensionsWeightTypeDriversResponse


$115/pr23H x 12W x 91/2D33 lbs.Acoustic suspension8" woofer, 13/4" tweeter40 Hz to 18 kHz, + 3 dB re 88 dBSPL at 1 meter at 1 watt2 5 kHz8 ohms10 watts (10 dBW)60 watts(18 dBW)Tweeter L -padLow stored energy loudspeakers

DESIGN SERIES


Response


Features


$440/pr453/4H x 15W x 12D82 lbs 2 oz.VARI (Infinite baffle/ported)12" woofer; 5" midrange; 11/2" LPFdome tweeter; 1" LPF dome su-pertweeter30 Hz to 22 kHz, -+ 3 dB re 90 dBSPL at 1 meter at 1 watt750 Hz; 2.3 kHz, 5 KHz8 ohms10 watts (10 dBW)250 watts (24 dBW1Midrange; tweeter and supert-weeter; L -pad controlsLow stored energy loudspeakers

$380/pr381/4H x 15W x 12D65 lbs.VARI 0"" (Infinite baffle/ported)12" woofer; 5" midrange, 11/2" LPF

Oarn

Response

CrossovermpedanceMin. powerMax. powerContras

Features

Norman LaboratorMs ModI 9

dome tweeter33 Hz to 20 kHz, + 3 dB re 90 dBSPL at 1 meter at 1 watt750 Hz; 2 5 kHz8 ohms10 watts (10 dBW)200 watts (23 dBW)Midrange and tweeter L -Pad con-trolsLow stored energy loudspeakers

Models also availableHD -770, $330. HD -550, $200, 8 Mk

$260/pr , 6 Mk II, $140/pr , 4 MkII, $80/pr , 930, $380/pr 900,$320/pr

MARTINEastman Sound Mfg. Co., Inc.Rt. #295 & Harmony RoadMickleton, N.J. 08056

TL -4050PriceDimensionsWeightTypeDrives

$650521/21-1 x 121/2W x 11ND84 lbs.Dual transmission lineTwo 11" woofers, 5" cloth curvilin-ear midrange, 1" dome tweeter

Response 28 Hz to 22 kHz, -f 4 dB re 92 dBSPL at 1 meter at 1 watt

Crossover 100 Hz, 900 kHz. 4 kHzImpedance 8 ohmsMin. power 100 watts (20 dBW)Max. power 300 watts (24 75 dBW)Controls Midrange, tweeterFeatures Newly designed enclosures, usingdirer -coupled highly -computed line of constantwidth, trimmed with port tube to better maintainbasic relationship between mass of woofer coneand :rimming tube

MagnificatPrice $449Dimensions 371/2H x 18W x 14DWeight 86 lbsType Acoustic suspensionDrivers Two 12" woofers, 5" convex mi-

drange; two 2" polyaxial tweetersResponse 28 Hz to 20 kHz re 92 dB SPL at 1

meter at 1 wattCrossover 500 Hz, 4 kHzImpedance 4 ohmsMir. power 35 watts (15 5 dBW)Max. power 100 watts (20 dBW)Controls Midrange, tweeterFeatures Drivers of vaned design and band -moth cover entire audible range and beyond; eachinckudes a large and efficient voice coil and magnetstructure

TL -2050Price $350

83

DimensionsWeightTypeDriversResponse


291/2H x 91/2W x 10D45 lbs.Transmission line8" woofer, 1" dome tweeter36 Hz to 22 kHz, +3 dB re 90 dBSPL at 1 meter at 1 watt1.2 kHz8 ohms35 watts (15.5 dBW)100 watts (20 dBW)NoneSame as model TL -4050

Gamma Gold 3000MPrice $329Dimensions 251/4H x 14W x 113/4DWeight 55 lbs.Type Bias portDrivers 10" heavy-duty butyl woofer; soft -

dome midrange; soft -dometweeter


Crossover 900 Hz; 4,4 kHzImpedance 8 ohmsMin. power 35 watts (15.5 dBW)Max. power 100 watts (20 dBW)Controls Midrange/tweeter

TL -1650PriceDimensionsWeightTypeDriversResponse

CrossoverImpedanceMon. powerMax. powerControlsFeatures

$250251/2H x 8W x 111/2D65 lbsTransmission line61/2" woofer; 1" dome tweeter38 Hz to 20 kHz, (- 3 dB re 88 dBSPL at 1 meter at 1 watt1 5 kHz8 ohms35 watts (15 5 dBW)100 watts (20 dBW)NoneSame as model TL -4050

Gamma 310XPrice $219Dimensions 213/4H x 121/4W x 10DWeight 37 lbsType Acoustic suspensionDrivers 10" woofer; 5" convex midrange; 2"

polyaxial tweeterResponse 36 Hz to 18 kHz re 91 dB SPL at 1

meter at 1 wattCrossover 900 Hz; 4,5 kHzImpedance 8 ohmsMm. power 15 watts (11.75 dBW)Max. power 60 watts (11,75 dBW)Controls Midrange/tweeterFeatures Handcrafted

GammaPriceDimensionsWeightTypeDriversResponse


Gold 2006M$12913H x 181/2W x 9D17 lbs 8 oz.Bias port61/2" woofer; dome tweeter40 Hz to 20 kHz, +4 dB re 91 dBSPL at 1 meter at 1 watt1 5 kHz8 ohms25 watts (14 dBW)75 watts (18 75 dBW)Tweeter

Models also availableTL -3050, $550; Gamma 315X,$289; Gamma 412X, $269;Gamma Gold 2008M, $159;Gamma 308X, $139; Gamma208X $119 Gamma 704X, $99

MATRECSMatrecs Industries805 Woodman Ave.Winslow, III. 61089

MA -130PriceDimensionsWeightTypeDrivers


MA -105PriceDimensionsWeightTypeDrivers

ResponseCrossoverImpedanceMin. powerMax. powerControlsFeaturespates heat

$179.5024H x 15W x 95/aD37 lbsAcoustic suspension12" woofer; 1" dome tweeter; 6" mi-drange35 Hz to 22 kHz1 kHz; 5 kHz8 ohms8 watts (9 dBW)75 watts (18.75 dBW)6" isolated midrange/tweeter levelcontrol

$165.5022H x 135/8W x 95/8D30 lbsAcoustic suspension10" woofer; 41/2" midrange 1" dometweeter35 Hz to 22 kHz2 5 kHz; 5 kHz8 ohms5 watts (7 dBW)50 watts (17 dBW)TweeterFerrofluid in voice -coil gap dissi-

MA-103Price $65.50Dimensions 20H x 12W x 95ADWeight 18 lbs. 8 oz.Type Acoustic suspensionDrivers 10" woofer; 3" tweeterResponse 35 Hz to 22 kHzCrossover 5 kHzImpedance 8 ohmsMin. power 5 watts (7 dBW)Max. power 35 watts (15.5 dBW)Features Aluminum voice coil;foam surround

Features McIntosh environmental equalizermay be used

ML -10CPriceDimensionsWeightTypeDrivers

Response

CrossoverImpedanceMin. powerMax. powerFeaturesmay be used

$31925H x 12 13/16W x 125/aD47 lbs.Acoustic suspension10" woofer; 11/2" dome midrange;coaxial super tweeter20 Hz to 20 kHz, 89 dB SPL at 1meter at 1 watt1 kHz; 7 kHz8 ohms20 watts (13 dBW)100 watts (20 dBW)McIntosh environmental equalizer

Models also availableXR 6 $749; XR 3 $425

MCS SERIESJ.C. Penney1301 Ave. of the AmericasNew York, N.Y. 10019

$399 95361/2H x 16W x 101/2D100 lbs12" woofer; two 2" soft -dome mi-dranges; 1" soft -dome tweeter

Drivers Air suspensionCrossover 600 Hz; 2 kHzImpedance 8 ohmsMin. power 50 watts (17 dBW)Max. power 150 watts (21 75 dBW)Controls Mid/tweeterFeatures Ferrofluid-cooled elements, built-in

multi -roll stand, removable grille

Models also availableMA -211, $173.50; MA -124.$131 50; MA -83, $48.50

McINTOSHMcIntosh Loudspeaker Division2 Chambers St.Binghamton, N.Y. 13903

XR-7PriceDimensionsWeightTypeDrivers

ResponseCrossoverImpedanceMin. powerMax. powerFeaturesmay he used

XR-5PriceDimensionsWeightTypeDrivers


$1,099401/4H x 191/2W x 143/81)118 lbs.Acoustic suspensionTwo 12" woofers; 8" lower mi-drange; two 11/2" dome upper mi-dranges; four 25/s" coaxialsupertweeters20 Hz to 20 kHz250 Hz; 1.4 kHz; 7 kHz8 ohms30 watts (14.75 dBW)300 watts (243/4 dBW) peakMcIntosh environmental equalizer

$59930H x 15W x 12D69 lbs.Acoustic suspension12" woofer; 8" lower midrange.11/2" dome upper midrange; two25/e" coaxial supertweeters20 Hz to 20 kHz250 Hz; 1.4 kHz; 7 kHz8 ohms30 watts (14.75 dBW)200 watts (23 dBW) peak

8228PriceDimensionsWeightType


$299 95265/sH x 15W x 13D37 lbs. 8 oz.Linear phase bass reflex12" cone woofer; 5" cone mi-drange; 2"cone tweeter

Response 29 Hz to 22 kHz, -20 dB re 93 dBSPL at 1 meter at 1 watt

Crossover 1.5 Hz; 3.8 kHzImpedance 8 ohmsMon. power 15 watts (11.75 dBW)Max. power 120 watts (2075 dBW)Controls Midrange; tweeterFeatures Two thermal relays; integral carry-ing handles

8320PriceDimensionsWeightTypeDrovers

$199.9524H x 133/8W x 121/4D27 lbs. 8 oz.Linear phase bass reflex10" cone woofer; 5" cone mi-drange; 2" cone tweeter

Response 32 Hz to 22 kHz, -20 dB re 92.5 dBSPL at 1 meter at 1 watt

Crossover 1.7 kHz; 5.5 kHzImpedance 8 ohmsMon. power 5 watts (7 dBW)Max. power 75 watts (18.75 dBW)Controls TweeterFeatures Two thermal relays; removablefront grille


$119.95211/8H x 11W x 97/6018 lbs. 11 oz.

Linear phase bass reflex8" cone woofer; 2" cone tweeter37 Hz to 22 kHz, -20 dB re 92 dB


DimensionsWeightTypeDriversResponseCrossoverImpedanceMin. powerMax. powerFeatures,,ppakers

600PriceDimensionsWeightTypeDriversResponseCrossoverImpedanceMin. powerMax. powerControls

500PriceDimensionsWeightTypeDriversResponseCrossoverImpedanceMin. powerMax. powerControls

S-35PriceDimensionsWeightType

DriversResponseCrossoverImpedanceMin. powerControls

1980 Edition


SPL at 1 meter at 1 watt3.5 kHz8 ohms5 watts (7 dBW)50 watts (17 dBW)Thermal relay

Models also available8227, $299.95; 8226, $199 95

MESAMesa Electronics Sales, Ltd.2940 Malmo DriveArlington Heights, III. 60005

Disco -DuoPrice $409.95Dimensions 295/2H x 18W x 14D (bottom); 71/2H

x 18W x 10D (top)Weight 73 lbs. (bottom); 16,/x lbs. (top)Type Bass reflexDrivers Two 12" woofers in bottom section;

2" x 5" piezoelectric horn; twosuperpiezoelectric tweeters

Response 45 Hz to 40 kHz re 100 dB SPL at1 meter at 1 watt

Crossover 2.5 Hz; 4 kHzImpedance 8 ohms (bottom)Max. power 200 watts (23 dBW) (bottom)Features Black -vinyl cabinet; flush -mountcarrying handles

MS -80 SubwooferPrice $249

16H x 18W x 16D64 lbs.Bass reciprocator10' woofer; 10" bass reciprocator30 Hz to 115 kHz, +5 dB200 Hz (passive)8 ohms5 watts (7 dBW)100 watts (10 dBW)Dual volume control for satellite

$199241/2H x 14W x 103/4D34 lbs.Bass reflex10" woofer; 5" midrange; 3" tweeter40 Hz to 20 kHz2 kHz; 5.5 kHz8 ohms10 watts (10 dBW)60 watts (17.75 dBW)Midrange; tweeter (+5 dB range)

$10921H x 121/2W x 9D25 lbs.Bass reflex8" woofer; 3" tweeter35 Hz to 20 kHz4.5 kHz8 ohms10 watts (10 dBW)50 watts (17 dBW)Tweeter ( + 5 dB range)

$139/pr91/4H x 61/4W x 51/2D12 lbs /pr5" woofer with 1 1/2" voice coil 41/2"soft -dome tweeter115 Hz to 17 kHz200 Hz (passive)4 to 8 ohms5 watts (7 dBW)50 watts (17 dBW)Satellite speaker specifically de-signed for use with a subwoofer

Models also available125, $279, 85, $229, 65, $169, 45,$119

MICRO -ACOUSTICSMicro -Acoustics Corp.8 Westchester PlazaElmsford, N.Y. 10523

FRM-1AXPrice $235Dimensions 2$53/45H x 153/2W x 123/4DWeight 40 lbs.Type Acoustic suspensionDrivers Five 11/4" drivers mounted in a Pen-

ta-Axis array; one 10" woofer withheavy-duty dynamic assembly

Response 32 Hz to 18 kHz, ±4 dBCrossover 1.7 kHzImpedance 8 ohmsMin. power 18 watts (12.5 dBW) (at 8 ohms)

continuousMax. power 70 watts (18.5 dBW) (at 8 ohms)

continuousControls Tweeter (adjusts center on -axis

tweeters); dispersion control (ad-justs four surrounding off -axistweeters simultaneously)

Features Full 10 -year warranty; tweeter pro-tection circuit

MS -1PriceDimensionsWeightDriversCrossoverImpedanceMin. powerMax. powerFeatures

$125/pr.4H a 91/4W x 5V4D21 lbs. 5 oz.Four 11/4" drivers3.5 kHz; 7 kHz16 ohms5 watts (7 dBW)60 watts (17.75 dBW)Full 5 -year warranty

Models also availableFRM 2AX $185 FRM-3AX, $279/[Jr

MITSUBISHIMelco Sales, Inc.3030 E. Victoria St.Compton, Calif. 90221

MS -40PriceDimensionsWeightTypeDrivers

Response


$550345/.H x 153/wi x 15 5/16D77 lbs.Acoustic suspension12" honeycomb cone woofer; 4"cone midrange; VW hybrid -dometweeter25 Hz to 20 kHz re 87 dB SPL at 1meter at 1 watt600 Hz; 5 kHz6 ohms30 watts (14.75 dBW)150 watts (21.75 dBW)

Controls Midrange; tweeterFeatures Overload projection with LED in-dicator; edgeless grille and cabinet design

MS -10PriceDimensionsWeightTypeDrivers


$165221/2H x 125/4W x 111/2ID32 lbs.Acoustic suspension10" honeycomb -cone woofer; 2"cone tweeter35 Hz to 20 kHz1.5 kHz6 ohms20 watts (13 dBW)100 watts (20 dBWITweeter

Features Overload -protection circuit; edge -less cabinet and grille

Models also availableMS 30 $395 MS 20 $275

MONITORGeneral Audio Corp.3504 HillcroftHouston, Tex, 77027

Monitor M-1000Price $500Dimensions 573/4H x 16W x 131/2DWeight 65 lbs.Type VentedDrivers Two 10" bass drivers; two 4"

frame -cone drivers; four 3W phe-nolic -ring tweeters

Response 20 Hz to 20 kHzCrossover 900 Hz; 1.5 kHz; 5 kHz; 6 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 80 watts (19 dBW)

Monitor Mark IIPrice $209.95Dimensions 23H x 14W x 10DWeigh, 29 lbs.Type VentedDrivers 10" bass driver; 41/2" frame -cone

driver; 31/2" phenolic -ring tweeterResponse 26 Hz to 20 kHzCrossover 1 kHz; 3.5 kHzImpedance 8 ohmsMm. power 10 watts (10 dBW)Max. power 35 watts (15 5 dBW)

Models also availableMonitor Mark IV, $279.95; MonitorMark III, $239.95

MORDAUNT-SHORTMordaunt-Short, Inc.1919 Middle Country RoadCentereach, N.Y. 11720

SigniferPrice

DimensionsWeightTypeDnvErs


CarnivalPriceDimensionsWeightTypeDrivers

ResponseCrossoverImpedanceMin powerMax. powerFeatures

$1,480/pr. including matchingstand31'/aH x 151/8W x 133/4D64 lbs.Three-way ported bass reflex11 4/5" woofer; 5 3/10" midrange;1" wide -dispersion synthetic -dometweeter38 Hz to 25 kHz, +2 dB500 Hz; 4 kHz8 ohms25 watts (14 dBW)250 watts (24 dBW)Bass; treble

Series 2$275/pr153/4H x 91/2W x 53/4D11 lbs. 9 oz.Dynamic8" midrange; 23/4" paper -conetweeter85 Hz to 17 kHz, t 3 dB3.5 kHz8 ohms10 watts (10 dBW)80 watts (19 dBW)Walnut or teak wood finish

Models also availablePageant Series 2, $495/pr , Festi-val Series 2, $385/pr.

65

NAGRANagra Magnetic Recorders,Inc.19 W. 44th St.New York, N.Y. 10036

DSMPriceDimensionsWeightTypeDriversResponseCrossoverImpedanceFeatures

$1,29793/4H x 103/4W x 51/4013 lbs. 14 oz.Acoustic suspensionTwo cone60 Hz to 15 kHz, +3 dB2.2 kHz8 ohmsBuilt-in amp

NEAL-FERROGRAPHNeal-Ferrograph652 Glenbrook RoadGlenbrook, Conn. 06906

S-23PriceDimensionsWeightType

$416173/13H x 71/2W x 11D19 lbs. 8 oz.Acoustic suspension with internallabyrinth

Drivers Two 4" long -throw roll surround; 1"soft dome


Impedance 6 ohms (nominal)Min. power 10 watts (10 dBW)Max. power 35 watts (15.5 dBW)Features Walnut or teak veneer; crossoverallows one woofer to switch over to midrange

NORDMENDESterling Hi -Fidelity, Inc.22-20 40th Ave.Long Island City, N.Y. 11101

LB -26PriceDimensionsWeightTypeDriversResponseImpedanceMin. powerMax. power

$100/pr9H x 6W x 5D4 lbs.Dynamic5"; 13/4"50 Hz to 20 kHz4 to 8 ohms3 watts (4 75 dBW)15 watts (11 75 dBW)


NORMAN LABORATORIESNorman Laboratories, Inc.2278 Industrial Blvd.Norman, Okla. 73069

NinePriceDimensionsWeightTypeDrivers

$470451/2H x 151/2W x 15D75 lbs.Acoustic suspensionThree 10" woofers; three 1" tweet-ers

Response 35 Hz to 20 kHz, +3 dB (1.5 kHzto 20 kHz, +2 dB)

Crossover 1.5 kHzImpedance 4 ohmsMin. power 30 watts (14.75 dBW)Max. power 70 watts (18.5 dBW) continuousControls Tweeter; wooferFeatures Rear -firing third woofer operates ineither acoustic or passive radiator mode for differ-ing bass outputs; tweeter -protection circuit

breaker; magnetic damping fluid in tweeters

EightPriceDimensionsWeightTypeDriversResponse


$14023H x 12W x 10D28 lbs.Acoustic suspension10" woofer; 1" tweeter45 Hz to 20 kHz, +4 dB (1.5 kHzto 20 kHz, +2 dB)1 5 kHz8 ohms15 watts (11.75 dBW)35 watts (15.5 dBW) continuousTweeter (3 -position)Magnetic damping fluid in tweeter

Models also available.-Pr, $310, Seven, $220

OHM ACOUSTICSOHM Acoustics Corp.241 Taaffe PlaceBrooklyn, N.Y. 11205

FPrice $950Dimensions 44H x 173/4W x 173/4D (bottom);

13W x 13D (top)Weight 80 lbs.Type Walsh; sealed systemDrivers 12" Walsh driverResponse 35 Hz to 19 kHz, 14 dB re 90 dB

SPLImpedance 4 ohmsMin. power 56 watts (17.5 dBW)Max. power 150 watts (21.75 dBW) continuous

above 1 kHzFeatures Protective fused; 10 lbs. 4 oz. mag-netic structures; 3" voice coil


$67531H x 151/2W a 16D76 lbs.Vented with subwoofer12" subwoofer; 8" woofer; 2" lowtweeter; two 1" dome tweeters

Response 35 Hz to 19 kHz, ±3'/2 dBCrossover 100 Hz; 2 kHz; 10 kHzImpedance 8 or 4 ohmsMin. power 10 watts (10 dBW)Max. power 1,000 watts (30 dBW)Controls Four (1 for each tweeter and for 8"

woofer)Features Walnut, oak, teak, and black cabi-nets; omnidirectional response

N SubwooferPrice $340Dimensions 15H x 16W x 15DType Dual subwoofer with passive radia-

torsDrivers Two 8" woofers; two 12" passive

radiatorsResponse 32 Hz to 140 kHz, ±4 dB re 89 dB

SPL at 1 meter at 1 wattCrossover 140 HzImpedance 8 or 4 ohmsMin. power 10 watts (10 dBW)Max. power 100 watts (20 dBW)Controls Level -matchingFeatures Built-in passive crossover for bothchannels in one walnut veneer enclosure

L SpeakerPrice $185Dimensions 20H a 12W x 10DWeight 33 lbs. 8 oz.Type VentedDrivers 8" woofer; 2" low tweeter; 2" high

tweeterResponse 42 Hz to 20 Hz, + 4 dB

Crossover 1 7 kHz, 10 kHzImpedance 8 or 4 ohmsMin. power 8 watts (9 dBW) for approx 100 dB

SPL at 3'Max. power 100 watts (10 dBW)Controls Two (one for each tweeter)Features Quasi third -order Butterworth filter,optimally vented enclosure; oiled -walnut veneer

Models also availableH, $360; C-2, $275; M, $145: E,$120

R.W. OLIVERR.W. Oliver Electronics, Ltd.580 E. Dobbie Ave.Winnipeg, Manitoba R3K 1G4

Thor -II Center -ChannelSubwooferPrice $895 (dependent on finish)Dimensions 18H x 24W x 24DWeight 112 lbsType Self -powered motional feedback

subwooferDrivers Two 12" high -power long -throwResponse 15 Hz to 100 Hz, +3 dBCrossover 50 to 100 Hz (variable)Impedance 10K ohmsMax. power 120 dB SPL (acoustic power)Controls Continuously variable bandwidth

(low frequency, 15 to 50 Hz; highfrequency, 50 to 100 Hz) sensitivitycontrol; limiter on/off

Features Integral amplification with motionalfeedback and limiting; summing amplifier combinesleft and right channels; selection of inlaid stonetops

Model 7 SpeakerPrice 5/80Dimensions 247/8H x 161/2W x 117/4DWeight 45 lbs.Type Tuned ducted portDrivers 12" high -power woofer; 4" x 10"

mid -range horn; 1" dome tweeterResponse 35 Hz to 20 kHz, +3 dB re 100 dB

SPL at one meter at one wattCrossover 1.2 Hz; 5 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 75 watts (19 dBW)Features Walnut finish; rear baffle port load-ing for improved bass loading

Models also availableModel 3 Speaker, $400

OLSONOlson Electronics260 S. Forge St.Akron, Ohio 44327

SP -580 Pedestal Tower IIPrice $349 98Dimensions 413/4H x 123/4W x 120Weight 60 lbs.Type Acoustic suspension; dynamicDrivers Two 8" woofers; 11/2" voice coil;

two 5" midranges; 1" voice coil; two21/4" tweeters

Response 50 Hz to 22 kHzCrossover 600 Hz; 8 kHzImpedance 8 ohmsMin. power 15 watts (11.75 dBW)Max. power 135 watts (21.25 dBW)Controls Tweeter; midrangeFeatures Two grilles; removable moldedcloth, all drivers covered with steel mesh grille;cabinet is walnut -finished vinyl over 3/4" thick parti-cle board


Person Acoustics 111F-2

Plimissilrosele lel Typo t

SP -585 "Acoust Aire IV"Price $229.95Dimensions 25H x 15W x 101/2DWeight 30 lbs.Type Acoustic suspensionDrivers 12" woofer; 2" voice coil; 5' mi-

drange; 1" voice coil; 21/4" tweeterwith silicone cooled voice coil

Response 30 Hz to 22 kHzCrossover 800 Hz; 10 kHzImpedance 8 ohmsMin. power 15 watts (11.75 dBW)Max. power 125 watts (21 dBW)Controls Midrange; tweeterFeatures Walnut -vinyl finish over 3/4" particleboard; steel mesh grilles over tweeter and mi-drange

Models also availableFR -3, $400; SP -579 "Acoust AireIV", $169.98

ONKYOOnkyo U.S.A. Corp.42-07 20th Ave.Long Island City, N.Y. 11105


Response


$26027H x 161/2W x 13D45 lbs.Acoustic suspension15" woofer; 4" carbon -fiber mi-drange driver; 1" titanium dometweeter45 Hz to 20 kHz, ±5 dB re 93 dBSPL at 1 meter at 1 watt700 Hz; 4.5 kHz8 ohms20 watts (13 dBW)100 watts (20 dBW) continuousMidrange; tweeter

Models also available160.$175

OPTONICASharp Electronics Corp.10 Keystone PlaceParamus, N.J. 07652

CP-5151APriceDimensionsWeightTypeDrivers

ResponseCrossover

1980 Edition

$40028H x 16W x 135r6D61 lbs. 8 oz.Acoustic suspension12" woofer; 2" dome midrange;horn -loaded ribbon tweeter30 Hz to 50 kHz500 Hz; 6 kHz

VPetroff Labs PL -6D

Impedance 3 ohmsMin. power 10 watts (10 dBW)Max. power 90 watts (19 5 dBW)Controls Midrange; tweeterFeatures Crossover has switchable 30 kHzfilter: speaker may be triamped

Models also availableCP-2121A $210

PEDERSON ACOUSTICSPederson AcousticsBox 47Chestnut Hill, Mass. 02167

HF-2PriceDimensionsWeightTypeDrivers


$7,500/pr.48H x 32W x 26D400 lbs.Direct radiator/folded hornThree dynamic (optional ribbontweeter)20 Hz to 20 kHz200 Hz; 3 kHz8 ohms25 watts (14 dBW)250 watts (24 dBW)

PETROFF LABSPetroff Labs11436 Victoria Ave.Los Angeles, Calif. 90066

PL -6DPriceDimensionsWeightType

Drivers

Response


Dipole Panel$45o/pr.42H x 12W x 31/2D30 lbs.Open -back dipole radiating linesourceFour 41/2" midranges; hybrid 2"cone; 3/4" dome tweeter100 Hz to 20 kHz, ±1.5 dB re 90dB SPL at 1 meter at 1 watt100 Hz; 5 kHz8 ohms30 watts (14.75 dBW)200 watts (23 dBW)

Controls Upper mid/high frequency contourFeatures Dipole equalized crossover; mustbe used with PL -6D subwoofer system

PL -6D subwooferPrice $248Dimensions 14H x 251/2W x 151/2DWeightTypeDriversResponse

CrossoverImpedance

50 lbs.Acoustic suspension; floor firingTwo 10" mass -loaded woofers30 Hz to 100 kHz, ±3 dB re 90 dBSPL at 1 meter at 1 watt100 Hz8 ohms

Precedent 1AZ-MOD II

Presage Model 4

Min. power 30 watts (14.75 dBW)Max. power 200 watts (23 dBW)Features Internal air core inductor crossovernetworks; glass inlay top

PHASE RESEARCHPhase Research Corp.3207 OradellDallas, Texas 75220"FrPriceDimensionsWeightTypeDrivers

N/A26H x 13W x 14D48 lbs.Modified transmission line8" woofer; 13/e" dome midrangetweeter

Respcnse 38 Hz to 20 kHz, ±3.5 dB re 88 dBSPL at 1 meter at 1 watt

CrossDver 1.8 kHzImpedance 8 ohmsMin. power 15 watts (11.75 dBW)Max. power 250 watts (24 dBW)Features Time -phased; mirror imaged; lowdiffracion; fiberwood construction; multiple inter-nal bracing; high power resistors; hickory vinyl fin-ish; 21/2% tolerance level crossovers


PHILIPSPhilips High FidelityLaboratories, Ltd.P.O. Box 2208Fort Wayne, Ind. 46801

RH-545PriceDimensionsWeightType

Drivers

ResponseCrossoverMin. DowerMax. powerCont -ols

Features

$1,500251/2H x 17W x 121/2D67 lbs.Acoustic suspension with triamplifi-cation12" high -compliance woofer; 2"dome midrange; 1' dome tweeter20 Hz to 20 kHz500 Hz; 3 kHzCan be driven from preampInternal amplifiersBass cut/boost; treble rolloff; tre-ble -frequency -selection switch; 3room -correction filter switches;channel -selector switch; automaticon/off switch; input -sensitivity con-trolMotional feedback system

RH-544Price $400Dimensions 153/aH x 111/4W x 81/2D

67

WeightType

Drivers

ResponseCrossoverMin. powerMax. powerControls

26 lbs.Acoustic suspension with biamplifi-cation8" high -compliance woofer; 2"dome midrange; 1" dome tweeter35 Hz to 20 kHz500 Hz; 400 HzCan be driven from preampInternal amplifiersHigh -frequency rolloff; input sen-sitivity; automatic on/off switch;channel -selector switch

TypeDrivers

ResponseCrossoverImpedanceMax. powerControls

HPM-40

Infinite baffle15" cone woofer; 5" cone mi-drange; 4" cone midrange; mul-ticellular horn tweeter; 2 domesupertweeters25 Hz to 22 kHz800 Hz; 2 kHz; 5 kHz; 10 kHz8 ohms100 watts (20 dBW)Midrange; tweeter

Features Motional feedback system Price $180Dimensions 221/2H x 123/4W x 121/2D

AH-476 Weight 28 lbs. 10 oz.Price $240 Type Bass reflexDimensions 26H x 133/4W x 111/4D Drivers 10" carbon -fiber cone woofer; lt's"Weight 42 lbs carbon -fiber cone tweeter; high -Type Acoustic suspension polymer filmDrivers 10" high -compliance woofer; 2" Response 35 Hz to 25 kHz

dome midrange; 1" dome tweeter Crossover 4 kHz; 10 kHzResponse 35 Hz to 20 kHz Impedance 8 ohmsCrossover 1.5 kHz; 5.5 kHz Min. power 20 watts (13 dBW)Impedance 8 ohms Max. power 100 watts (20 dBW)Min. power 20 watts (13 dBW) Controls TweeterMax. power 60 watts (17.75 dBW)Controls Midrange Project 80

Price $99SJ-2932 Dimensions 18V2H x 101/2W x 83/eDPrice $130 Weight 12 lbs. 8 oz.Dimensions 27H x 141/2W x 121/2D Type Bass reflex/ducted portWeight 42 lbs. Drivers 8" cone woofer; 11/4" cone tweeterType Tuned port Response 35 Hz to 20 kHzDrivers 10- high -compliance woofer; two 5" Crossover 1.5 kHz

cone midrange drivers; 1" dome Impedance 8 ohmstweeter Max. power 20 watts (13 dBW)

Response 46 Hz to 20 kHzCrossover 2 kHz, 6 kHz Models also availableImpedance 8 ohms HPM-100, $350, HPM-60, $260;Max. power 60 watts (17.75 dBW) Project 120, $145; Project 60A,

SJ-2931PriceDimensionsWeightTypeDrivers


$10024H x 133/4W x 111/2D31 lbs 8 oz.Tuned port10" high -compliance woofer; 1

dome tweeter47 Hz to 20 kHz4 kHz8 ohms45 watts (16 5 dBW)

Models also availableRH-567, $450, AH-477, $300; RH-541, $250; AH-475, $150; SJ-2930, $150/pr.

PIONEERU.S. Pioneer Electronics Corp.85 Oxford DriveMoonachie, N.J. 07074

HPM-150PriceDimensionsWeightTypeDrivers


CS -99APriceDimensionsWeight

$55038 25/32H x 173/4W x 173/4D74 lbs. 14 oz.Bass reflex153/4" carbon -fiber cone woofer; 4"cone -type midrange; 13/4" conetweeter; omnidirectional, horn -loaded, high -polymer film supert-weeter25 Hz to 25 kHz75 Hz; 2.6 kHz; 8.5 kHz8 ohms50 watts (17 dBW)300 watts (24.75 dBW)Midrange; tweeter

$350243/4H x 161/2W x 113/4D51 lbs. 11 oz.

$80

PLASMATRONICPlasmatronic, Inc.2460 Alamo, S.E., Suite 101Albuquerque, N.M. 87106

Hill Type 1 Plasma SystemPrice $7,000Dimensions 571/2H x 241/2W x 20DWeight 580 lbs./pr.Type PlasmaDrivers Plasma; cone midrange; cone bassResponse 18 Hz to 30 kHz, +3 dB re 107 dB

SPL at 1 meter from one plasmadriver

Crossover 120 Hz; 700 HzImpedance 8 ohmsControls Plasma level; crossover pointFeatures Biamped with high amp crossover,VU meters; hi -lo balancing network

POLKPolk Audio1205 South Carey St.Baltimore, Md. 21230

Real Time Array Model 12

Features Optional stand; choice of rose-wood -vinyl or walnut -vinyl finish

5A Bookshelf MonitorPrice $129 95Dimensions 21V2H x 101/2W x 81/2DWeight 29 lbs.Type Passive radiatorDrivers 61/2" midrange with 8" passive

radiator; 1" dome tweeterResponse 40 Hz to 21 kHz, +3 dB re 92 dB

at 1 watt at 1 meterCrossover 60 Hz; 3 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 60 watts (17.75 dBW)Controls Factory calibratedFeatures Same as Model 10A

Mini MonitorPriceDimensionsWeightTypeDrivers

Response


$114.9513H x 6l/4W x 4V2D10 lbs.Passive radiator4V2 bass/midrange driver with41/2" bass radiator; 1" dometweeter60 Hz to 20.5 kHz, +2 dB re 92 dBSPL at 1 watt at 1 meter100 Hz; 3 kHz6 ohms5 watts (7 dBW)60 watts (17.75 dBW)Optional mounting kit

Models also available10A Monitor System, $239.95; 7BMonitor System, $174.95

PRECEDENTPrecedent Audio Products, Inc.306 E. Oliver St.Baltimore, Md. 21202

PRECEDENT SERIES

MZ-ModPriceDimensionsWeightTypeDriversResponse

CrossoverImpedance

$747.50/pr.361/2H x 71/2W x 13D50 lbs. ea.Transmission line 75" midrange; 3/4" tweeter70 Hz to 20 kHz, +21/2 dB re 88 dBSPL at 1 meter at 1 watt3.5 kHz8 ohms

Min. power 25 watts (14 dBW)Max. power 50 watts (17 dBW)Features Phase and time aligned; minimizeddiffraction areas; modular construction allowsbuild-up to MZ Mod III speaker system by addingon modular woofers to Mod II system and flippingswitch from two-way to three-way mode

CYLINDER SERIES

PanoramaPriceDimensions

$374 9545H x 19W x 15D (stand, 12H)

PriceDimensions

$795/pr.50H x 13'/2W x 131/2D

Weight 85 lbs. Weight 40 lbs. ea.Type Passive radiator Type DynamicDrivers Two 6l/2" plasticized bass/mi-

drange; 1" soft -dome (open -Drivers 8" woofer; 21/2" midrange; 1"

tweetermounted) tweeter; 12" passiveradiator

Response 40 Hz to 20 kHz, + 21/2 dB re 92 dBSPL at 1 meter at 1 watt

Response 27 Hz to 20.5 kHz, +2 dB re 96 dB Crossover 800 Hz; 2.5 kHzSPL at 1 meter at 1 watt Impedance 8 ohms

Crossover 50 Hz; 2 kHz Min. power 10 watts (10 dBW)Impedance 6 Ohms Max. power 200 watts (23 dBW)Mm. power 10 watts (10 dBW) Features Extremely efficient and superb po-Max. power 500 watts (27 dBW) lar response due to unique cylinder design; high -Controls Factory calibrated power handling


Models also availableMZ-Mod Ill. $1,495/pr (teak lami-nate); $1,695/pr. (walnut veneer);Vista, $380/pr.

PRESAGEPresage Corp.Dumaine Ave.Nashua, N.H. 03060

Presage 4Price $599.95Dimensions 42H x 15W x 15'/2DWeight 65 lbsType Passive radiatorDrivers 10" woofer; 41/4 cone midrange; 1"

dome tweeterResponse 25 Hz to 20 kHz, 4-3 dBCrossover 470 Hz; 3.5 kHzImpedance 8 ohmsMin. power 25 watts (14 dBW)Max. power 200 watts (23 dBW) continuousControls Tweeter; midrange

PresagePriceDimensionsWeightTypeDrivers


5$349 9526H x 15W x 121/2D43 lbs.Passive radiator8" woofer; 41/2" cone midrange; 1

dome tweeter28 Hz to 20 kHz, ±3 dB470 Hz; 3.5 kHz8 ohms25 watts (14 dBw)150 watts (21.75 dBW) continuousTweeter; midrange

Presage 17Price $99.95Dimensions 251/4H x 121hW x 121/2DWeight 23 lbs.Type Bass reflexDrivers 8" foam -edge; 2" phenolic cone


SPL at 1 meter at 1 wattCrossover 1.3 kHzImpedance 8 ohmsMin. power 5 watts (7 dBW)Max. power 60 watts (17.75 dBW)

Models also availableS-9, $199.95; Presage 15, $119.95(walnut grained vinyl); $135 (oak orwalnut veneer)

PSBPSB SpeakersBox 144St. Jacobs, Ont. NOB/2NO

Beta IlaPriceDimensionsWeightTypeDrivers

$59523H x 12W x 101/2D35 lbs.Acoustic suspension1" soft -cloth dome tweeter; 8' mo-tional feedback woofer

Response 25 Hz to 20 kHz, +2 dBImpedance 4 ohmsMin. power 80 watts (19 dBW)Controls Listening level (5 -position); amp -

matching C (11 -position)Features Motional feedback system usingexisting system amplifier; built-in infrasonic filter;fused

Summit ElevenPrice $580

Summit NinePrice $445

1980 Edition


Response


Featurestype

Passif I

Price $195Dimensions 26H x 12W x 101/4DWeight 30 lbs.Type Passive radiatorDrivers 1" textile dome tweeter; 7" woofer.

8" passive radiatorResponse 50 Hz to 20 kHz, ±2 dBCrossover 2 kHzImpedance 8 ohmsMin. power 30 watts (14.75 dBW)Max. power 60 watts (17.75 dBW)Features Real walnut veneer

Models also availablePassif Ila, $295; Avant§ Ila Walnut,$170 (walnut); $145 (vinyl); Avan-tini II, $100

PYRAMIDPyramid Loudspeaker Corp.131-15 Fowler Ave.Flushing, N.Y. 11355

Metronome 3$1,700/pr.34H x 213/4W x 153/4D105 lbs.Acoustic suspensionTwo 8" cone woofers; 4" cone mi-drange; ribbon tweeter 05" x 3"35 Hz to 35 kHz, ±3 dB re 90 dBSPL at 1 meter at 1 watt650 Hz; 3 kHz6 ohms75 watts (18.75 dBW)300 watts (24.75 dBW)Switch for biamping without exter-nal crossover; tweete-Unipolar linear diffraction; radiation

Metronome 2W SubwooferPrice 51,600/prDimensions 25H x 271/2W x 161/2D (truncated)Weight 115 lbs.Type Acoustic suspensionDrivers 14"Response 29 Hz to 90 Hz, ±3 dB re 87 dB

SPL at 1 meter at 1 wattCrossover 90 HzImpedance 8 ohmsMin. power 200 watts (23 dBW)Max. power 800 watts (29 dBW)Controls NoneFeatures 2W available only with Metronome2

Models also availableMetronome 2, $1,400,pr , T-1 Rib-bon Tweeter, $1.175/pr.

QUADRAFLEXQuadraflex Industries1301 65th St.Emeryville, Calif. 94608

1012BPriceDimensionsWeightTypeDrivers


$15027H x 161/2W x 101/2D42 lbs.Acoustic suspension12" woofer; 5" midrange cone; 21/2"tweeter38 Hz to 18 kHz. +4 dB600 Hz; 2 kHz8 ohms5 watts (7 dBW)

QYSONICQysonic Research Corp.920 S. Placentia Ave.Placentia, Calif. 92670

ArrayPriceDimensionsWeightType

Drives

Response


Features

$479471/2H x 121/2W x 81/2055 lbs.Critical alignment; Laminar flowventTwo 8" woofers; 41/2" midrange; 2"spiderless tweeter; 1" (polar) domesupertweeter28 Hz to 22 kHz, ±3 dB re 92 dBSPL at 1 meter at 1 watt800 Hz; 3 kHz; 8 kHz6 ohms30 watts (14.75 dBW)1,140 watts (30.75 dBW)Midrange; tweeter; polar supert-weeterWood stand included

Laug Subwoofer SystemPrice $229Dimensions 3$31/2 9H x 111/2W x 10DWeight 50 lbs.Type Critical Alignment': bass unitDrivers Two 8" woofersResponse 28 Hz to 100 Hz, +3 dBCrossover 90 HzImpedance 6 ohmsMin. power 30 watts (14.75 dBW)Max. power 250 watts (24 dBW)Features Built-in passive crossover for satel-lites with rolloff at 90 Hz; 6 dB per octave

TAD llPriceDimensionsWeighType

Drivers

Response

CrossoverImpedanceMm. DowerMax. powerCont-olsFeaturesbase

$22529H x 9W x 6'/2D25 lbs.Critical Alignment' Laminar flowventTwo 6" woofers; 2" spiderlesstweeter; 2" supertweeter40 Hz to 25 kHz, +3 dB re 90 dBSPL at 1 meter at 1 watt2 kHz; 8 kHz6 ohms15 watts (11.75 dBW)250 watts (24 dBW)TweeterHardwood corners; optional floor

Models also availableSpree, $139, Micro. $99

REALISTICRadio Shack2617 W. 7th St.Ft. Worth, Texas 76107Optimus T-200Price $259 95Dimensions 34H x 121/2W x 121/2DType Acoustic suspensionDrivers Two 10" woofers; 61/2" midrange;

2" tweeter (with special horn as-sembly)

Response 50 Hz to 20 kHzImpedance 8 ohmsMax power 150 watts (21 75 dBW)Controls Midrange; trebleFeatures Gradial slope crossovers; floor -standing tower enclosure; walnut veneer

Mach OnePrice

23Dimensions $283/9954Hx 173/4W x 12DWeight 65 lbs.Type Acoustic suspensionDrivers 15" woofer; midrange; horn tweeterResponse 20 Hz to 25 kHzCrossover 1 kHz; 5 kHzImpedance 8 ohmsMin. power 25 watts (14 dBW)Max power 100 watts (20 dBW) peakCon rots Midrange; tweeterFeatures Walnut veneer cabinet

89

Optimus 23Price $99 95Dimensions 221/4H x 121/4W x 113/4DType VentedDrivers 10" woofer; 21/2' tweeterResponse 55 Hz to 20 kHzCrossover 3 5 kHzImpedance 8 ohmsMax. power 75 watts (18.75 dBW)Features Walnut veneer cabinet

Nova 6PriceDimensionsWeightTypeDriversResponseImpedanceMin. powerMax. powerFeatures

MinimusPriceDimensionsWeightTypeDrivers


$8019'/4H x 111/2W x 8i/eD24 lbs. 8 oz.Acoustic suspension8" woofer; 3" tweeter30 Hz to 20 kHz7 watts (8.5 dBW)45 watts (16.5 dBW)TweeterWalnut veneer cabinet

7$507H x 41/2W x 41/4D4 lbs. 8 oz.Acoustic suspension4" high -compliance woofer; 1" ex-tended range high -compliancedome tweeter50 Hz to 20 kHz, +5 dB2.5 kHz8 ohms7 watts (8.5 dBW)40 watts (16 dBW) continuousAluminum die-cast enclosure

Models also availableOptimus T-100, $179.95; Optimus27, $149.95; Optimus 25, $139.95;Optimus 10, $140

REFERENCECBS Retail Stores1301 65th St.Emeryville, Calif. 94608

312LPriceDimensionsWeightTypeDrivers

ResponseCrossoverImpedanceMin. powerMax. powerControlsFeaturest

310LPriceDimensionsWeightTypeDrivers

ResponseCrossoverImpedanceMin. powerMax. powerControlsFeaturestweeze'

228LPriceDimensionsWeight

70

$279.95315/sH x 18W x 13D48 lbs.Acoustic suspension12" woofer; 61/2" midrange, 1 soft -

dome tweeter32 Hz to 22.5 kHz, 4 4 dB500 Hz; 4 kHz8 ohms10 watts (10 dBW)100 watts (20 dBW)PresetLinear -phase design, f us. -d

$179 95283/4H x 16W x 115/eD42 lbs.Acoustic suspension10" woofer; 61/2" midrange; 1" My-lar dome tweeter38 Hz to 20 kHz, +4 dB600 Hz; 4 kHz8 ohms10 watts (10 dBW)80 watts (19 dBW)PresetLinear -phase design, fused

$129.9526,/aH x 15W x 10V4D30 lbs

TypeDrivers

Acoustic suspension8" woofer; 8" passive radiator; 1"

LS 3/5a BBC MonitorPrice $560/pr

Mylar dome tweeter Dimensions 12H x 71/2W x 63/5DResponse 45 Hz to 20 kHz, ±4 dB Weight 11 lbs 8 oz.Crossover 3 kHz Type Acoustic suspensionImpedance 8 ohms Drivers 41/2" Bextrene bass/midrange, 1"Min. power 10 watts (10 dBW) dome tweeterMax. power 60 watts (17.75 dBW) Response 70 Hz to 20 kHz, +3 dB re 96 dBControls Preset SPL at 1 meter at 1 wattFeatures Linear -phase design; fused Crossover 3 kHzAft,pr Impedance 15 ohms

Min. power 25 watts (14 dBW)Models also available Max. power 25 watts (14 dBW)

115W, $239.95; 204L, $179.95; Features Designed by BBC208L, $89.95

REGA RESEARCH LTD.Import Audio, Ltd.13430 Clayton RoadSt. Louis, MO. 63131

RTXPrice $2,200/pr. including standsDimensions 361/6H x 14'/xW x 16 9/16D (on

stands)Weight 70 lbsType Triangulated transmission lineImpedance 8 ohmsMin. power 40 watts (16 dBW)Features Cabinet material is laminated fiber-board coated with phenolic resin for rigidity

REVOXStudor Revox America, Inc.1819 BroadwayNashville, Tenn. 37203

Models also availableMonitor 2, $900/pr.; CampactMonitor, $660/pr

RSLRogersound Labs, Inc.8381 Canoga Ave.Canoga Park, Calif. 91304

6600HPriceDimensionsWeightTypeDrivers


$52546H x 18W X 1D90 lbs.Twin subenclosure, bass reflexTwo 12" woofers, two 5" cone mi-dranges; Electro-Voicesion horn tweeter25 Hz to 20 kHz800 Hz; 5 kHz4 ohms10 watts (10 dBW)150 watts (21 75 dBW)Tweeters; midrangeFuse protection

compres-

BX-4100Price $1,199 SierraDimensions 30 3/10H x 17 7/10W x 15 7/10D Price $439.95Weight 66 lbs. Dimensions 40V8H x 141/2W x 121/2DType Acoustic suspension Weight 71 lbs.Drivers Eight 5" woofers; 3/4" dome Type Passive radiator

tweeter; 7" midrange Drivers 12" wooferResponse 25 Hz to 25 kHz Response 20 Hz to 22 kHzCrossover 450 Hz; 3.2 kHz Crossover 800 Hz; 5 kHz (at 60 dB/octave)Impedance 4 ohms Impedance 8 ohmsMin. power 20 watts (13 dBW) Min. power 10 watts (10 dBW)Max. power 200 watts (23 dBW) Max. power 150 watts (21.75 dBW)Controls 3 -position midrange; 3 -position tre-

bleControls Mid; woofer (variable damping)

Features Linear phase Studio 3600

Models also availableBX 350 $395

ROGERSReference MonitorInternational, Inc.2380 C Camino Vida RobleCarlsbad, Calif. 92008

XA-75/L-35B ReferenceMonitor SystemPrice $2,300Dimensions 32,/21-1 x 161/2W x 18DWeight 78 lbs.Type Acoustic suspensionDrivers 12" woofer in each cabinetResponse 20 Hz to 150 Hz, +3 dB re 96 dB

SPL at 1 meter at 1 watt (sub -woofer); 45 Hz to 20 kHz, +2 dBfor L -35B

Crossover 150 HzImpedance 8 ohmsMin. power 50 watts (17 dBW)Max. power 100 watts (20 dBW)Features XA-75 electronic crossover andbass amplifier combined for adding to LS -3/5a

Price $299.9525H x 141/2W x 111/2D50 lbs.Bass reflex12" woofer; 5" flat -cone midrange;4" dome tweeter35 Hz to 22 kHz800 Hz; 4 kHz8 ohms12 watts (10.75 dBW)125 watts (21 dBW)Midrange; tweeterFuse protection



Models also availableGrande, $750; Nevada, $450; 3300Studio Monitor, $225 black studio -type enclosure; $265, walnut en-closure; Studio 3600 Black, $175

RTRRTR Industries, Inc.8116 Deering Ave.Canoga Park, Calif. 91304

DR -1Price $1,495Dimensions 49H x 161/2W x 161/2D


RSL 3300 Studio Monitor

OrmeIle Lamp

Sansul .1-11

WeightTypeDrivers

Response

165 lbs.Electrostatic/dynamic12"; two 10" woofers; 14" diametercylindrical electrostatic radiator30 Hz to 30 kHz, ±2 dB

dependently or with DAC/1 subwoofer; pyramidshape

ESR-6Crossover 325 Hz Price $250Impedance 8 ohms Dimensions 141/2H x 141/2W x 12DMin. power 75 watts (18.75 dBW) for woofer Weight 23 lbs.

section Type Electrostatic tweeter arrayMax. power 150 watts (21.75 dBW) for woofer

sectionDrivers Six 3" x 6" HF-50 electrostatic pa-

nelsControls Electrostatic volume; treble Response 1.5 kHz to 20 kHz, ±2 dBFeatures Internally contained power amp Crossover 1.5 kHzand electronic crossover control; direct -drive elec- Impedance 8 ohmstrostatic radiator (325 Hz to 30 kHz range) Min. power 15 watts (11.75 dBW)

Max. power 60 watts (17.75 dBW)Controls Tweeter; woofer

600D Features Circuit breakerPrice $600Dimensions 48H x 161/2W x 16Y 2DWeight 112 lbs. G-10Type Acoustic suspension Price $190Drivers Dimensions 25V2H x 141/4W x 11D

dome midranges; two 1" soft -dome Weight 44 lbs.tweeters Type Vented

Response 32 Hz to 20 kHz, ±2 dB re 91.5 dB Drivers 10" woofer; 1" dome tweeterSPL at 1 meter at 1 watt Response 48 Hz to 20 kHz, ±3 dB re 91 dB

Crossover 950 Hz; 10 kHz SPL at 1 meter at 1 wattImpedance 4 ohms Crossover 2 kHzMin. power 25 watts (14 dBW) Impedance 6 ohmsMax. power 200 watts (23 dBW) Min. power '0 watts (10 dBW)Controls Midrange; tweeter Max. power 80 watts (19 dBW)Features Circuit breaker Controls Tweeter level; user-resettable cir-

cuit -breaker protection

ESR-15 Features Same as Model G-200

Shwas S-200

Shahinlon Obollok

SP -X8700Price $335Dimensions 27 1/16H x 181/2W x 10 5/8DWeight 39 lbs. 3 oz.Type Bass reflexDrivers 17" woofer; 61/2" cone midrange; 6

1/16" x 2" rectangular horntweeter; three 2' cone supertweet-ers

Respcnse 25 Hz to 23 kHz re 98 dB SPL at 1meter at 1 watt

Impedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 220 watts (23.5 dBW)Features Genuine carved wood gnlle; wal-nut -grain vinyl finish on particle board cabinet

SP -X6700Price $235Dimerwsions 25 3/16H x 15 5/16W x 11 1/16DWeight 29 lbs. 11 oz.Type Bass reflexDrivers 13" woofer; 4" cone midrange; 6 1/

16" x 2" rectangular horn tweeter;two 2" cone supertweeters


Crossover 2 kHz; 12 kHz; 17 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 130 watts (21.25 dBW)Contras TweeterFeatures Genuine carved wood grille; wal-nut -gram vinyl finish on particle board enclosure

PriceDimensions

$40019I /2H x 161/2W x 163/4D Models also available SPA -2100

Weight 48 lbs. DAC/1, $600; 800D, $600; 300D, Price $150Type Electrostatic tweeter array $400; G-200, $270; 75D, $250, Dimensions 22 13/16H x 13 3/16W x 11V4DDrivers Fifteen 3" x 6" HF-50 electrostatic EXP 8-V, $100 Weight 26 lbs. 14 oz.

panels Type Acoustic suspensionResponseCrossover

1.25 kHz to 20 kHz, ±2 dB1.25 kHz SANSUI

Drivers 10" cone woofer; 51/2" cone mi-drange; 2" x 5" piezoelectric

Impedance 8 ohms Sansui Electronics Corp. tweeterMin. powerMax. power

15 watts (11.75 dBW)100 watts (20 dBW) 1250 Valley Brook Ave. Resporse

Crossover40 Hz to 22 kHz800 Hz; 2.5 kHz

Controls Tweeter; woofer Lyndhurst, N.J. 07071 Impedance 8 ohmsFeatures Circuit breaker Min. power 15 watts (11.75 dBW)

SP -L700 Max. pc wer 45 watts (16.5 dBW)PS/1 Price $680 Controls Midrange; tweeterPrice $325 Dimensions 35 1/16H x 16 15/16W x 14 13/ Features Circuit breaker; walnut -grain vinylDimensions 213/4H x 5W (top) x 123/4W (bot-

tom) x 8D16D

Weight 81 lbs. 8 oz.finish; black double-knit grille

Weight 35 lbs. Type Bass reflex J-11Type Acoustic suspension Drivers Two 10" cone woofers; 23/4" horn PriceDrivers 8" woofer; 11/2" soft -dome mi-

drange; 1" soft -dome tweetertweeter

Response 30 Hz to 25 kHzDimensionsWeight

13/16H x 4 13/16W x 5 3/16Doz./pr.

Response 65 Hz to 20 kHz, ±2 dB re 90.5 dB Crossover 2 kHz Type Bass reflex with passive radiatorSPL at 1 meter at 1 watt Impedance 8 ohms Drivers 4" cone woofer; 1" dome tweeter;

Crossover 1.5 kHz; 9.5 kHz Min. power 10 watts (10 dBW) 4" passive radiatorImpedance 6 ohms Max. power 200 watts (23 dBW) Response 45 Hz to 20 kHz, re 85 dB SPL atMin. power 25 watts (14 dBW) Controls Tweeter 1 meter at 1 wattMax. power 100 watts (20 dBW) Features Sensitivity: 93 dB at 1 meter at 1 Crossover 2.5 kHzControls Tweeter; high-pass filter defeat watt, biamp connections; genuine walnut veneer Impedance 5 ohmsFeatures Satellite speaker system; use in- finish; casters Min. power 10 watts (10 dBW)

19811 Edition 71

Max. power 60 watts (17.75 dBW)Featur,-. Brushed aluminum finish

Models also availableSP -L800, $950, SP -X9700, $390,SP -X7700, $290, SPA -3100,$400/pr , SPA -1100, $100; J-33,$450/pr

SARASSaras of America4150 Glencoe Ave.Venice, Calif. 90291


$55042'/2H x 141/2W x 13D90 lbsAcoustic suspensionTwo 10" woofers, 5" midrange 1

convex tweeterResponse 30 Hz to 18 kHz, +2 5 dBCrossover 500 Hz, 5 kHzImpedance 8 ohmsMax. power 150 watts (21 75 dBW)Controls NoneFeatures Time alignment enclosure, third -or-der Butterworth filters; LED power indicator; sus-pended grille -cloth panel


CrossoverControls

$21024H x 133/4W x 111/4D48 lbsAcoustic suspension10" woofer, 1" convex tweeter35 Hz to 18 kHz, + 3.5 dB re 90 dBSPL at 1 meter at 1 watt1 8 ohmsNone

Models also available30A $350. 22, $250

SCOTTH. H. Scott, Inc.20 Commerce WayWoburn, Mass. 01801

Pro 100BPrice $550Dimensions 291/4H x 19W x 14'/2DWeight 67 lbs.Type Air suspensionDrivers 15" woofer; two 41/2" cone mi-

dranges; two 1" dome tweetersResponse 36 Hz to 20 kHz, +4 dB re 94 dB

SPL at 1 meter at 1 wattCrossover 700 Hz; 3 5 kHzImpedance 4 ohmsMm. power 20 watts (13 dBW)Max. power 300 watts (24 75 dBW)Controls Midrange; tweeter; top speaker ad-

justmentFeatures Bidirectional radiation; high -powerconstruction woofer

S -196WPriceDimensionsWeightTypeDrivers

$280251/2H x 15W x 103/4D42 lbs.Air suspension12" woofer; 41/2" midrange; 1"

dome tweeterResponse 38 Hz to 20 kHz, +4 dB re 96 dB

SPL at 1 meter at 1 wattCrossover 800 Hz; 3.5 kHzImpedance 6 to 8 ohmsMm. power 15 watts (11.75 dBW)Max. power 120 watts (20.75 dBW)Controls Midrange, tweeterFeatures Extra -long voice coil, high -powerconstruction woofer; oiled -walnut veneer cabinet

S -188TPriceDimensionsWeightTypeDrivers

$23033,/2H x 13W x 101/2D44 lbs.Air suspension10" woofer; 4'/2" midrange,dome tweeter

Response 38 Hz to 20 kHz, +4 dB re 95 4 dBSPL at 1 meter at 1 watt

Crossover 900 Hz; 3 5 kHzImpedance 6 to 8 ohmsMin. power 10 watts (10 dBW)Max. power 100 watts (20 dBW)Controls Midrange; tweeterFeatures Extra -long voice coil; high -powerconstruction woofer

S -177BPriceDimensionsWeightTypeDrivers

$12019H x 11W x 9D20 lbsAir suspension8" woofer; 5" midrange; 13/4

tweeterResponse 50 Hz to 18 kHz, + 4 dB re 94 dB

SPL at 1 meter at 1 wattCrossover 1.2 kHz; 3 5 kHzImpedance 6 to 8 ohmsMm. power 7 watts (8 5 dBW)Max. power 70 watts (18 5 dBW)Features High -compliance woofer with butylrubber annulus; phenolic -ring tweeter

S -176BPriceDimensionsWeightTypeDriversResponse


$9018H x 101/2W x 8I/2D17 lbsBass reflex with tuned port8" woofer; 13/4" tweeter60 Hz to 18 kHz, +4 dB re 93.5 dBSPL at 1 meter at 1 watt3.5 kHz6 to 8 ohms5 watts (7 dBW)60 watts (17.75 dBW)High -compliance woofer with butyl

rubber annulus; phenolic -ring tweeter

Models also available51978 $280, S196B, $250, S -186B, $200, 166B, $120

SHAHINIANShahinian Acoustics, Ltd.4 Selden CourtSelden, N.Y. 11784

ObeliskPrice

DimensionsWeightType

DriversResponse


$400 (walnut), oak (teak, $450,rosewood, $500)263/4H x 14W x 12D50 lbs.Hybrid transmission line with pas-sive radiator8" woofer; 4" x 1" Mylar dome35 Hz to 18.5 kHz, +2, -3 dB re 90dB SPL at 1 meter at 1 watt2 kHz6 ohms25 watts (14 dBW)350 watts (25.5 dBW)

Controls NoneFeatures Forty-eight" hybrid transmissionline with 10" passive radiator

SHOWCOShowco Manufacturing Corp.1225 Round Table DriveDallas, Texas 75247

1718-SPrice $1,005Dimensions 88H x 491/2W x 22ND

WeightTypeDriversResponse


PyramidPriceDimensionsWeightType

Drivers

Response


300 lbs.Pyramid loaded bass horn18" woofer20 Hz to 100 Hz, +4 dB re 101 5dB SPL at 1 meter at 1 watt100 Hz (biamplified)8 ohms50 watts (17 dBW)500 watts (27 dBW)Tower subwoofer

S-2005399421/2H x 14V2W x 14D95 lbs.Four-sided folded -horn midbass;acoustic suspension low bass8' and 12" woofers; 5" midrange, 2dome tweeters28 Hz to 18 kHz, +3 dB re 91 5 dBSPL at 1 meter at 1 watt200 Hz, 800 Hz, 5 kHz8 ohms10 watts (10 dBW)100 watts (20 dBW)TweeterTower design

Models also availablePyramid 1800, $780; Pyramid1500. $630

SNELL ACOUSTICSSnell Acoustics10 Prince PlaceNewburyport, Mass. 01950

Type APriceDimensionsWeightTypeDrivers

$840461/2H x 233/4W x 13D97 lbs.Acoustic suspension10' woofer; 4" midrange; 1" dometweeter

Response 36 Hz to 18 kHz, +11/2 dBCrossover 275 Hz; 2.5 kHzImpedance 4 ohmsMm. power 80 watts (19 dBW)Features Mirror -imaged pairs; biamped driv-ers individually fused biamplification possible

SONIC SYSTEMSSonic Systems6165 N. Rosemead Blvd.Temple City, Calif. 91780

TowerPriceDimensionsWeightTypeDrivers

$1,100391/4H x 211/2W x 19D135 lbs.Radial -slot port bass reflex12" woofer; two compression driv-ers

Response 30 Hz to 20 kHz, 3 dB re 94 dBSPL at 1 meter at 1 watt

Crossover 1 2 kHzImpedance 8 OhmsMin. power 10 watts (10 dBW)Max. power 350 watts (25.5 dBW)Controls High -frequency sectionFeatures Biplanar dispersion system; set upfor biamping

Studio B-1Price $135Dimensions 231/2H x 121/2W x 111/4DWeight 30 lbs.Type Acoustic suspensionDrivers 8" cone woofer; 4" cone midrange;

1" soft -dome tweeterResponse 45 Hz to 20 kHz, +3 dBImpedance 8 ohmsMin. power 10 watts (10 dBW)


Max. power 100 watts (20 dBW)Controls Midrange (variable)Features Walnut veneer finish

Models also availableStudio B-3, $210; Studio B-2, $170

SONIKIT1173 65th St.Oakland, Calif. 94608

DALESFORD EXPORT SERIES



$575 (assembled); $350 (kit)36H x 153/4Wx 151/4D90 lbs.Acoustic suspension12" Bextrene woofer; 6" Bextrenemidrange; 1" low -mass soft -domeAudax tweeter30 Hz to 20 kHz, ± 3 dB250 Hz; 3.5 kHz8 ohms25 watts (14 dBW)100 watts (20 dBW)

Features Bituminous felt and long -fiber wooldamping; diffraction -free enclosure



$275 (assembled); $185 (kit)253/4H x 121/2W x 12D35 lbs.Acoustic suspension10" Bextrene woofer/midrange; 1"low -mass Audax soft -dometweeter40 Hz to 20 kHz, ±3 dB2.5 kHz8 ohms25 watts (14 dBW)100 watts (20 dBW)Same as Model 208

BSC-3 Mini (Rogers)Price $175 (assembled); $115 (kit)Dimensions 133/8H x 83/8W x 81/eDWeight 19 lbs.Type Acoustic suspensionDrivers 5" Bextrene woofer/midrange; 1"

low -mass Audax soft -dometweeter

Response 50 Hz to 20 kHz, ± 3 dBCrossover 3.5 kHzImpedance 8 ohmsMin. power 25 watts (14 dBW)Max. power 50 watts (17 dBW)Features "Bass Tilt" circuitry; bituminous feltdamping; diffraction free enclosure

FRIED SERIES

Fried Super SubwooferPrice $1,550 (assembled), $550 (kit)Dimensions 36'/2H x 30W x 15DWeight 120 lbs.Type Transmission lineDrivers 12" high -power Bextrene wooferResponse 15 Hz to 200 Hz. +0 dB re 92 dB

SPL at 1 meter at 1 wattCrossover 75 HzImpedance 8 ohmsMin. power 25 watts (14 dBW)Max. power 100 watts (20 dBW)Features Passive crossover; biamp inputsprovided

Fried T SubwooferPrice $700 (assembled); $360 (kit)Dimensions 211/41-1 x 121/4W x 441/4DWeight 88 lbs.Type Transmission lineDrivers 10" high -power Bextrene woofer

Response 20 Hz to 200 Hz, +0 dB re 87 dBSPL at 1 meter at 1 watt

Crossover 100 HzImpedance 8 ohmsMin. power 25 watts (14 dBW)Max. power 100 watts (20 dBW)Features Separate transmission lines foreach channel; may be used with B/2, C, or otherfull -range speakers; passive crossover; biamp in-puts provided

Fried "C" Mini MonitorsPrice $475 (assembled). $275 (kit)Dimensions 13'/2H x 10'/2W x 9DWeight 20 lbs.Type Pressure releaseDrivers 6" Bextrene bass/midrange; 1"

low -mass soft -dome westerResponse 50 Hz to 20 kHz, +3 dB re 92 dB

SPL at 1 meter at 1 wattCrossover 3.5 kHzImpedance 8 ohmsMin. power 25 watts (14 dBW)Max. power 100 watts (20 dBW)Features Truncated pyramid with pressurerelease, may be used alone or with T. D, or Supersubwoofers

S.E.A.S. SERIES

$220 (kit)26H x 153/4W x 121/2D46 lbs.Ducted port13" plastic -doped woofer; 41/2"

plastic -doped midrange; 1" softplastic dome tweeter


Crossover 600 Hz; 3 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 80 watts (19 dBW)



$120 (kit)191/8H x 11l/eW x 103/eD20 lbs. 8 oz.Ducted port8" woofer; 4" plastic -doped mi-drange; 1" soft plastic dometweeter


Crossover 800 Hz; 4 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 60 watts (17.75 dBW)Features Plastic -doped midrange; comput-er -aligned port; lacquered -ash enclosure

Models also available310, $475 (assembled); $300 (kit);208, $195 (assembled); $125 (kit);Fried Super Monito System,$2,000 (assembled); $800 (kit);Fried H/2 Monitor System, $950(assembled); $550 (kit); Fried DSubwoofer, $500 (assembled);$338 (kit); Fried B/2 Wu Monitors,$275 (assembled); $180 (kit);Disco 47 Monster, $354 (kit); 403,$150 (kit); 223, $85 (kr)

SONRISESonrise Audio Systems13620 N.E. 20th St., Suite ABellevue, Wash. 98005

The SpiritPrice $400/prDimensions 20H x 133/8W x 11 DWeight 38 lbs.

TypeDriversResponseCrossoverImpedanceMin. powerMax powerFealures

Acoustic suspension10" woofer, 1" soft -dome tweeter30 Hz to 20 kHz1 5 kHz8 ohms15 watts (11.75 dBW)75 watts (18.75 dBW)Same as The Dayspring

The CharismaPriceDimensionsWeightTypeDrivers


$975/pr36H x 161/2W x 131/2D80 lbs.Acoustic suspensionTwo 10" woofers, 5" midrange; 1"soft -dome tweeter20 Hz to 20 kHz550 Hz, 5 kHz4 ohms30 watts (14.75 dBW)150 watts (21 75 dBW)Same as The Dayspring

The RevelationPriceDimensionsWeightTypeDrivers


$1,250/pr.

42H x 171/4W x 15D104 lbs.Acoustic suspensionTwo 12" woofers, two 5" midrangedrivers; two 1" soft -dome tweeters20 Hz to 20 kHz550 Hz; 5 kHz4 ohms30 watts (14.75 dBW)200 watts (23 dBW)Same as The Dayspring

Models also availableThe Dayspring, $258/pr.; TheTrinity, $650/pr.

SONYSony Corp. of America9 West 57th St.New York, N.Y. 10019

SS-G7XPriceDimensionsWeightTypeDrivers

$1,00037H x 20W x 17'/2D106 lbs.Bass reflex15" cone woofer; 4" midrange; 1Wtweeter

Response 30 Hz to 20 kHz, re 94 dB SPL at1 meter at 1 watt

Crossover 550 Hz; 4.5 kHz (each 12 dB/oc-tave)

Impecance 8 ohmsMin. power 25 watts (14 dBW)Max. power 200 watts (23 dBW)Controls Tweeter; midrangeFeatures Phase -aligned speaker manage-ment; "AG" baffer board

SS-EG XPriceDimensionsWeightTypeDriversRespcnseCrossoverImpedanceMin. powerMax. powerFeaturesnamic cooling

$3009 5/16H x 6I/4W x 8 3/a D8 lbs. 6 oz.Acoustic suspension5" woofer, 1" dome tweeter65 Hz to 20 kHz, +4, -8 dB1.5 kHz8 ohms20 watts (13 dBW)100 watts (20 dBW)Plumb -IM IMC drivers; thermody-

SSU-2070Price $200Dimensions 26H x 15W x 141/2D

40 lbs.Type Acoustic suspensionDrivers 10" woofer; 31/4" midrange; 23/e"

19140 Edition 73

Response


SSU-1270PriceDimensionsWeightTypeDrivers


tweeter35 Hz to 20 kHz re 92 dB SPL at 1meter at 1 watt800 Hz; 7.5 kHz8 ohms20 watts (13 dBW)100 watts (20 dBW)Tweeter; midrangeIM line -driver arrangement

$10026H x 141/2W x 103/4D25 lbs.Acoustic suspension10" woofer; 31/4" midrange; 2"tweeter40 Hz to 20 kHz2 kHz; 7 kHz8 ohms20 watts (13 dBW)70 watts (18.5 dBW)

Models also availableSSU-4000, $400; SSU-3000,$300, SSU-2000, $150, SSU-1070, $85

SOUND DYNAMICSSound Dynamics Corp.161 Don Park RoadMarkham, Ontario L3R/1C2

12SPriceDimensionsWeightType

$279.50263/4H x 151/4W x 12D55 lbs.Computer -tuned low -resonancebass reflex

Drivers 12" long -throw woofer; 1" phenolicdome horn -loaded with 53/8" cast -aluminum lens

Response 28 Hz to 20 kHz, +3 dB re 101.5dB SPL at 1 meter at 1 watt

Crossover 2 kHzImpedance 8 ohms (nominal)Min. power 10 watts (10 dBW)Max. power 125 watts (21 dBW)Controls L -pad variable through full rangeFeatures Bookshelf design; hand -built com-ponent drivers; walnut -vinyl finish

1205PriceDimensionsWeightType

$359 5033H x 17W x 12D70 lbsComputer -tuned low -resonancebass reflex

Drivers 12" heavy-duty woofer with long -throw 11/2" voice coil; felted cone;1" horn loaded, 5 2/5" cast -alumi-num lens

Response 26 Hz to 20 kHz, +3 dBCrossover 750 Hz; 3.25 kHzImpedance 8 ohms (nominal)Min. power 12 watts (1075 dBW)Max. power 150 watts (21 75 dBW)Controls L -pad variable through full rangeFeatures "Floating bass port"; phase -cor-rected, precisely angled, floor -standing cabinet,hand -built component drivers; walnut vinyl finish

Models also available10S, $199.50; 6S. $149.50; 15S,$449 50

SOUNDMATESSoundmates, Inc.796 29th Ave., S.E.Minneapolis, Minn. 55414

1.500Price $269 95



.125PriceDimensionsWeightTypeDrivers


241/2H x 141/2W x 121/4D50 lbs.Acoustic suspensionTwo 8" butyl -surround woofers; 3"direct radiator tweeter with 5 -lbmagnet30 Hz to 20 kHz8 ohms10 watts (10 dBW)80 watts (19 dBW)Tweeter level

$109.958H x 143/4W x 151/2D4 lbs 12 ozAcoustic suspension4" butyl -surround woofer with 1

voice coil; soft -dome tweeter MI -1" voice coil50 Hz to 20 kHz8 ohms10 watts (10 dBW)50 watts (17 dBW)Tweeter level

Models also available1 000. $179 95

SOURCESound Source1435 Jacqueline DriveColumbus, Ga. 31907


N/A241/2H x 15W x 121/2040 lbsTube vented reflex12" woofer; 2' x 6" piezoelectrichorn

Response 35 Hz to 40 kHz, +3 dBImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 250 watts (24 dBW)Controls NoneFeatures External fusing; genuine walnut ve-neer enclosure


ResponseImpedanceMin. powerMax. power

N/A223/4H x 13'/4W x 10'/4D34 lbs.Tube vented reflex10" woofer, 5" (sealed environ-ment) midrange; 2" phenolic -ringtweeter40 Hz to 20 kHz, + 3 dB8 ohms5 watts (7 dBW)100 watts (20 dBW)

Controls TweeterFeatures External fusing, genuine walnut ve-neer enclosure

SIGNATURE SERIES

4aPriceDimensionsWeightType

Drivers

ResponseCrosoverImpedanceMin. powerMax. powerControls

$49942H x 16W x 13D95 lbs.Rear -frequency time line, acousti-cally damped12' woofer; 5" isolated midrange;1" soft -dome tweeter20 Hz to 22 kHz, +3 dB900 Hz; 6 kHz8 ohms20 watts (13 dBW)200 watts (23 dBW)Tweeter; midrange

2aPrice $279Dimensions 26H x 131/2W x 10'/20

WeightTypeDrivers


30 lbsVented, acoustically damped10" woofer; 5" isolated midrange;1" soft -dome tweeter38 Hz to 22 kHz, +3 dB1.8 Hz; 6 kHz8 ohms10 watts (10 dBW)100 watts (20 dBW)Tweeter

Models also available1220, N/A 0-12, N/A 3a, $350,la, $199

SPEAKERCRAFTSpeakercraft of OregonP.O. Box 13460Portland, Ore, 97213

Sylvan MonitorPriceDimensionsWeightTypeDrivers

$48946H x 16W x 14D82 lbs.Loaded transmission lineFour' 12" passive elements; two61/2" high -compliance bass drivers,push/pull configuration; 6t/2" plasti-cized midrange; 1" soft -dometweeter


Crossover 200 Hz; 3 kHzImpedance 4 ohmsMin. power 35 watts (15.5 dBW)Max. power 250 watts (24 dBW)Controls Tweeter (3 -position)Features Push/pull; phase corrected; walnutveneer enclosure; floorstanding

Sylvan StandardPrice $179Dimensions 24H x 13W x 110Weight 32 lbs.Type Acoustic suspensionDrivers Three 8" plasticized woofers; two

21/2" spiderless cone tweetersResponse 37 Hz to 21 kHz, +3 dBCrossover 3 kHzImpedance 4 ohmsMin. power 15 watts (11.75 dBW)Max. power 100 watts (20 dBW)Controls Tweeter (3 -position)Features Phase corrected; walnut veneeredenclosure; bookshelf standing

Models also availableSylvan Premier, $329

SPEAKERLABSpeakerlab, Inc.735 N. Northlake WaySeattle, Wash. 98103

SKPrice $650 (SKFW kit, $445)Dimensions 501/2H x 32'/4W x 28DWeight 220 lbs.Type Folded hornDrivers 15" woofer; 17" x 6" horn midrange;

4" x 83/4" Wave Aperture- driverResponse 101 dB SPL at 1 meter at 1 wattCrossover 400 Hz; 5 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 250 watts (24 dBW)Controls Midrange; tweeterFeatures Extremely wide dispersion WaveAperture " tweeter; tweeter and midrange fluiddamped with Magnor'"

S-6Price $360 (vinyl kit, $256)Dimensions 271/4H x 151/2W x 113/4D


Sonic System Tower

WeightTypeDrivers


Source Model 4.

70 lbs.Acoustic suspension12" woofer; 43/4" x 43/4" Wave Aper-ture* driver; 4" x 83/4" Wave Aper-ture* driver91 dB SPL at 1 meter at 1 watt1 kHz; 5 kHz8 ohms

Min. power 15 watts (11.75 dBW)Max. power 200 watts (23 dBW)Controls Midrange; tweeterFeatures Extremely wide dispersion WaveAperture." midrange and tweeter, fluid dampedwith Magnor - , Polylam*; double -layer woofercone construction

S-4PriceDimensionsWeightTypeDrivers

$310 (vinyl kit, $199)271/4H x 151/2W x 111/.D70 lbs.Acoustic suspension12" woofer; 6" midrange; 4" x 81/4"Wave Aperture* driver

Response 91 dB SPL at 1 meter at 1 wattCrossover 600 Hz; 5 kHzImpedance 8 ohmsMin. power 15 watts (11.75 dBW)Max. power 200 watts (23 dBW)Controls Midrange; tweeterFeatures Extremely wide dispersion WaveAperture' compression tweeter, fluid dampedwith Magnor*; Polylam* double -layer woofer andmidrange cone construction

S-2.5PriceDimensionsWeightTypeDrivers


$215 (vinyl kit, $139)261/4H x 15V4W x 103/4D56 lbs.Acoustic suspension10" woofer; 6" midrange; 1" dometweeter91 dB SPL at 1 meter at 1 watt500 Hz; 3 kHz8 ohms15 watts (11.75 dBW)150 watts (21.75 dBW)

Controls Midrange; tweeterFeatures Polylam* double -layer woofer andmidrange cone construction



$115 (vinyl kit $67)203/4H x 413/4W x 83/4D31 lbs.Acoustic suspension8" woofer; 1" recessed -dometweeter92 dB SPL at 1 meter at 1 watt2.5 kHz8 ohms10 watts (10 dBW)75 watts (18.75 dBW)

Controls TweeterFeatures Polylam'" double -layer woofercone construction

Spendor SA1 Mini Monitor

Models also availableS-7 WA, $500 (vinyl kit, $309); S-30, $330 walnut kit (vinyl kit, $285);S-3, $275 (vinyl kit, $169); S-2,$159 (vinyl kit, $97); Speakerlab0.1, $99 (vinyl kit, $65)

SPECKMANJ.W.S. Acoustic Design Corp.11407A Route 14Harvard, III. 60033

S-415 TitusPrice $1,025Dimensions 36H x 15% dia.; x 18 dia., with legsWeight 75 lbs. (approx., depending on leg

style)Type Cylindrical Column of Air Effect*

subchamberDrivers 15" extended -range subwoofer; 4"

lower midrange; two 2" dome mi-dranges; two 1" dome tweeters

Response 19 Hz to 20 KHz, ±2 dB re 91 dBSPL at 1 meter at 1 watt

Crossover 450 Hz; 2 kHz; 6 kHzImpedance 8 ohmsMin. power 25 watts (14 dBW)Max. power 250 watts (24 dBW)Features Midnight -black flat smooth finishwith interchangeable pecan legs; chain packageavailable for hanging

S-15 Titus SubwooferPrice $650Dimensions 36H x 151/4 dia.; 48H x 18 dia., with

legsWeight 75 lbs. (approx., depending on leg

styles)Type Cylindrical Column of Air Effect*

subchamberDrivers 15" extended -range subwooferResponse 19 Hz to 100 Hz, ±2 dBCrossover Passive at 100 HzImpedance 8 ohmsMin. power 25 watts (14 dBW)Max. power 250 watts (24 dBW)Features Midnight -black flat smooth finishwith interchangeable pecan legs; chain packageavailable for hanging

S-82PriceDimensions

WeightType

DriversResponse


$12919H x 81/2 dia.; 24H x 101/2 dia. withlegs15 lbs.Cylindrical Column of Air Effectsubchamber8" woofer; 1" dome tweeter70 Hz to 20 kHz, ±2 dB re 90 dBSPL at 1 meter at 1 watt2.5 kHz8 ohms15 watts (11.75 dBW)

Supers: Satellite/1

Max. power 45 watts (16.5 dBW)Features Midnight -black flat smooth finishwith nterchangeable pecan legs; chain packageavailable for hanging

Models also availableS-412 Galatian Edition, $559; S-310 Galatian Edition, $345; S-103,$195

SPENDORRCS Audio International, Inc.1314 34th St., N.W.Washington, D.C. 20007

BC -3Price


Response

CrossoverImpedanceMin. powerMax. Dower

$825 (walnut veneer); $900 (rose-wood veneer)311/2H x 151/2W x 151/2D75 lbs.Modified reflex12" Spendor woofer; 8" Spendormidrange driver; Celestion 1300tweeter; Celestion 2000 tweeter30 Hz to 25 kHz (50 Hz to 14 kHz,±2.0 dB)700 Hz; 3 kHz; 13 kHz8 ohms50 watts (17 dBW)80 watts (19 dBW)

SA -1 Mini MonitorPrice $230 (walnut veneer); $250 (rose-

wood veneer)Dimensions 12H x 9W x 9DWeight 16 lbs.Type DynamicDrivers 6" Spendor woofer; Son Audax HD

12.8 D25 tweeterResponse 50 Hz to 20 kHz (70 Hz to 14 kHz,

3 dB)Crossover 3 kHzImpecance 8 ohmsMin. power 20 watts (13 dBW)Max. power 40 watts (16 dBW)

Models also availableBC -1, $375 (walnut veneer); $415(rosewood veneer)

STRELIOFFStrelioff System Designs5305 Teudilla Ave.Woodland Hills, Calif. 91364

TS -1 Transducer SystemPrice $5,500/1 pr.Dimersions 66H x 36W x 18DWeightTypeDrivers

210 lbs.Acoustic suspensionTwo 10" cast -aluminum frame

1980 Edition 75

woofers; six 11/2" dome midranges;six 1" dome tweeters


Crossover 800 Hz; 5 kHzImpedance 5 ohms at 500 HzMin. power 100 watts (20 dBW)Max. power 500 watts (27 dBW)Controls Biamp; triamp; low frequency roll -

off (mode switches); 10 dB at-tenuation for each frequency range(rotary controls)

Features Custom finishes available

ME -1 Monitor Bass ExtenderPrice $950Dimensions 48H x 20W x 20DWeight 110 lbs.Type Acoustic suspensionDrivers Two 10" cast -aluminum frame

woofers in separate chambersResponse 38 Hz to 150 Hz, +4 dB re 78 dB

SPL at 1 meter at 1 wattCrossover 20 Hz; 200 Hz (filter network)Impedance 8 ohms at 70 HzMin. power 20 watts (13 dBW)Max. power 200 watts(23 dBW)Controls NoneFeatures Individual input terminals for eithermono or stereo applications; cabinet constructionincludes high -density 11/2" thick walls throughoutand internal bracing. custom finishes available

Models also availableTE-1 Transducer Bass Extender,$3,000/pr , MS -1 Monitor System,$1,250/pr.

SUPER SOUND PANELMeteor Light & Sound Co.155 Michael DriveSyosset, N.Y. 11791

Super Sound PanelPriceDimensionsWeightTypeDrivers


$94939H x 51W x 6I/2D130 lbs.DynamicSix 12" woofers; four 6" mid/highdrivers; 71/4" x 21/4" horn -compres-sion tweeter2.5 kHz; 7 kHz12 ohms80 watts (19 dBW)300 watts (24.75 dBW) continuous

Features Fuse protection (spare fuse andchangeover switch provided); automatic tweeter -protection unit

SUPEREXSuperex Electronics Corp.151 Ludlow St.Yonkers, N.Y. 10705

Satellite/1Price $89.95Dimensions 10 1/41-I x 8 1/2W x 6DWeight 5 lbs. 3 oz.Type Dynamic high -frequency augmen-

tationDrivers Two 1" textile dome tweetersResponse 4 Hz to 4 kHz to 20 kHz, +2 dB re

96 dB SPL at 1 meter at 1 wattCrossover 4 kHzImpedance 4 ohmsMax. power 100 watts (20 dBW)Controls High -frequency attenuatorFeatures Slotted dispersion plate eliminatesbeaming; high -resolution driver design in non -reso-nant smoked plexiglass enclosure

SYNERGISTICSMaybern Co.9565 Midwest Ave.Cleveland, Ohio 44125

S-92 Panels and CommodePrice $2,000Dimensions Commode. 19 3/4H x 38W x 18D,

panels: 61H x 23W x 4DWeight Commode: 130 lbs.; panels: 70 lbs.Type Acoustic suspensionDrivers Six 41/2" open -backed midrange

drivers; 12" woofers; two bipolartweeters


Crossover 140 Hz; 2.0 kHzImpedance 8 ohmsMin. power 35 watts (15.5 dBW)Max. power 600 watts (27.75 dBW)Controls Midrange and tweeter levelsFeatures Circuit breakers; 3/4" high -densityparticle board finished with genuine hand -rubbedwalnut veneer; 3 -piece bipolar with stereo sub -woofer

S-73 TowerPriceDimensionsWeightTypeDrivers


$57546 1/2H x 21 3/4W x 15D79 lbs.Vented12" passive radiator; two 8" high -compliance woofers; bipolarsamarium cobalt tweeter midrange30 Hz to 20 kHz, ±3 dB45 Hz; 2.0 kHz8 ohms15 watts (11.75 dBW)150 watts (21.75 dBW)Woofer and tweeter levels

Features 3/4" high -density particle board fin-ished with genuine hand -rubbed walnut veneer:bipolar design; circuit breaker

S -51CPriceDimensionsWeightTypeDrivers


$32525'/2H x 14 1/4W x 11 '/2D41 lbs.Vented12" passive radiator; 8" high -com-pliance woofer; piezoelectric su-pertweeter; 21/2" tweeter35 Hz to 24 kHz, +4 dB45 Hz; 2.5 kHz; 12.5 kHz8 ohms6 watts (7.75 dBW)80 watts (19 dBW)Tweeter level

Features 3/4" high -density particle board fin-ished with genuine hand -rubbed walnut veneer; cir-cuit breaker


$17525 1/zH x 14 '/4W x 11 1/2D37 lbs.Vented10" passive radiator; 8" woofer.21/2" tweeter

Response 40 Hz to 18 kHz, +4 dBCrossover 50 Hz; 2.5 kHzImpedance 8 ohmsMin. power 6 watts (7.75 dBW)Max. power 50 watts (17 dBW)Controls Tweeter levelFeatures 3/4" high -density particle board fir-ished walnut -grain vinyl; circuit breaker

S -22BPriceDimensionsWeightTypeDriversResponseCrossoverImpedanceMin. power

$13023H x 12W x 9l/2E)29 lbs.Acoustic suspension8" woofer; 21/2" tweeter50 Hz to 18 kHz, +4 dB3.2 kHz8 ohms6 watts (7.75 dBW)

Max. power 40 watts (16 dBW)Features 3/4" high -density particle board fin-ished in walnut -grain vinyl


S-63 Tower, $400; S-53 Tower,$325, S-46, $250; S-23, $150; S -12B, $100

TAMONTamon Audio Corp. ofAmericaP.O. Box 322Concord, Calif. 94522

TS -707PriceDimensionsWeightTypeDrivers


CRO-40LPriceDimensionsWeightTypeDrivers


TS -404PriceDimensionsWeightTypeDrivers


LB -1030PriceDimensionsTypeDrivers

ResponseMin. powerFeatures

CRO-30LPriceDimensionsWeightTypeDriversResponseCrossoverImpedanceMax. power

$380311/eH x 167/eW x 111/6D55 lbs.Infinite baffle15" cone woofer; two 5" sealed -back cone midrange drivers; 3"ring -radiating tweeter; 21/2" metal-lic supertweeter30 Hz to 35 kHz600 Hz; 6 kHz; 15 kHz8 ohms110 watts (20.5 dBW); 200 watts(23 dBW) peak

$25022H a 125/81/4/ x 113/eD27 lbs. 8 oz.Infinite baffle10" cone woofer; 5" sealed -backcone midrange; 3" cone tweeter38 Hz to 22 kHz800 Hz; 3 kHz8 ohms35 watts (15.5 dBW); 60 watts(17.75 dBW) peak

$249.95221/2H x 121/4W x 113/eD27 lbs. 8 oz.Infinite baffle10" cone woofer; 5" sealed -backcone -midrange; 3" ring -radiatingtweeter38 Hz to 35 kHz800 Hz; 2.5 kHz8 ohms60 watts (17.75 dBW); 100 watts(20 dBW) peak

$229.95 (with mounting brackets)7,/eH x 41/2W x 41/4DDynamic4" long -throw woofer; 1" soft -dometweeter60 Hz to 20 kHz15 watts (11.75 dBW)Suitable for home or auto use

$14019H x 101/2W x 85/8D16 lbs.Infinite baffle8" cone woofer; 3" cone tweeter45 Hz to 22 kHz3 kHz8 ohms25 watts (14 dBW); 40 watts (16dBW) peak

Models also availableCRO-50L, $360, TS -505, $349;CRO-33L, $169; TS -303, $140

TANDBERGTandberg of America, Inc.Labriola CourtArmour, N.Y. 10504

FasettsPrice $200/pr




BerkeleyPriceDimensionsWeightTypeDrivers



DimensionsTypeDriversResponseCrossoverImpedanceMin. powerMax. power

101/2H x 11W xAcoustic suspension5" woofer; 2W tweeter50 Hz to 20 kHz3.5 kHz8/4 ohms8 watts (9 dBW)25 watts (14 dBW)

TANNOYTannoy-Ortofon, Inc.122 Dupont St.Plainview, N.Y. 11803

Buckingham$2,25046H x 24W x 18D212 lbs.Ducted portIntegrated phase -coherent 8" mi-drange/tweeter with two 12" bassdrivers40 Hz to 20 kHz, ±3 dB350 Hz; 3.5 kHz8 ohms10 watts (10 dBW)150 watts (21 75 dBW) continuousTreble rolloff; treble energy

$65533H x 21W x 12D90 lbs.Ducted port15" woofer with compression high -frequency tweeter mounted oncommon axis45 Hz to 20 kHz, f 4 dB1 kHz8 ohms10 watts (10 dBW)150 watts (21.75 dBW) continuousTreble energy; treble rolloffPhase -coherent integrated design

$49528H x 15W x 12D66 lbs.Passive radiator10" woofer with compression high -frequency tweeter mounted oncommon axis

Response 45 Hz to 20 kHz, +3 dBCrossover 3.5 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 150 watts (21.75 dBW) continuousControls Treble rolloff; treble energyFeatures Glass -top floor standing speakerutilizing phase -coherence integrated design



$22824H x 12W x 10D40 lbs.Ducted port10" woofer and compression high -frequency driver50 Hz to 20 kHz, ±3 dB5 kHz8 ohms10 watts (10 dBW)150 watts (21.75 dBW) continuousTreble rolloff; treble energy

Models also availableWindsor, $1,250, Arden, $777,185, $425

TECHNICSPanasonic Co.1 Panasonic WaySecaucus, N.J. 07094

SB-7070PriceDimensionsWeightTypeDrivers

$450403/4H x 171/2W a 161AD72 lbs. 13 oz.Bass reflex13W woofer; 61/4" md-low; 4" mid -high; 1" dome tweeter


Crossover 350 Hz; 1.2 kHz; 4 kHzImpedance 8 ohmsMax. power 180 watts (22.5 dBW) (music); 120

watts (20.75 dBW) (DIN)Controls Midrange; tweeterFeatures Linear -phase design; individualthermal relay protection for driver

SB-L300PriceDimensionsWeightTypeDrivers

$250283/2H x 14316W x 121/2040 lbs.Bass reflex12" woofer; 4" midrange; radialhorn tweeter


Crossover 1.6 Hz; 4.5 kHzImpedance 8 ohmsMax. power 130 watts (21.25 dBW) (music); 90

watts (19.5 dBW) (DIN)Controls Tweeter; midrangeFeatures Linear -phase design; individualthermal relay protection for each driver

SB-L100Price $150Dimensions 24H a 113/4W x 103/2DWeight 24 lbs.Type VentedDrivers 10" woofer; radial horn tweeterResponse 43 Hz to 22 kHz re 89.5 dB SPL at

1 meter at 1 wattCrossover 3.2 kHzImpedance 8 ohmsMax. power 75 watts (18.75 dBW) (music); 50

watts (17 dBW) (DIN)Features Linear -phase design; individualthermal relay protection for each driver

Models also availableSB-6060, $350, SB-L200, $200,SB-P1000, $180/pr

TECHNISOUNDTechnisound, Inc.60 E. Ida St.Antioch, ILL. 60002

120BPriceDimensionsWeightType

Drivers


1200PriceDimensionsWeightTypeDriversResponseCrossoverMin. powerMax. powerControls

$25027H x 16W a 11D58 lbs.Passive radiator velocity regenera-tive10" woofer; 6" midrange driver; 3"tweeter36 Hz to 20 kHz, +2 dB300 Hz; 3.5 kHz8 ohms20 watts (13 dBW)100 watts (20 dBW) continuousMidrange; tweeter

$20026H 18W x 12D54 lbs.VentedThree37 Hz to 20 kHz, ±3 dB475 Hz; 4 kHz15 watts (11.75 dBW) continuous60 watts (17.75 dBW) continuousMidrange; tweeter; thermal over-load reset

Models also available80E4 $90

THIELThiel Audio Products Co.4158 Georgetown RoadLexington, Ky. 40511


Response

CrossoverImpedanceMm. powerMax. powerFeatures



$500/pr.36H x 10W x 10D34 lbs.Passive radiator8" bass radiator; 61/2" woofer/mi-drange; 1" dome tweeter40 Hz to 20 kHz, ±2 dIB re 89 dBSPL at 1 meter at 1 wiatt4 kHz8 ohms20 watts (13 dBW)150 watts (21.75 dt3WTime and phase coher ent

$250/pr.19H x 11W a 91/2022 lbs.Ported61/2" woofer; 1" dome tweet ,er45 Hz to 20 kHz, ± 2 dB rr .) 92 dBSPL at 1 meter at 1 watt2 kHz8 ohms10 watts (10 dBW)100 watts (20 dBlifl)I

Models also available03 S8

THORENSElpa Marketing Indwitr les, Inc.Atlantic & Thorens Ay es.New Hyde Park, N.V. 11040

HP -380PriceDimensionsWeichtTypeDrivers

ResponseCrossoverImpedanceMon. powerMax. power

HP -360PriceDimension s

TypeDrivers

ResponseCrossove rImpedanc eMin. powt .>rMax. pow er

$1,000471/2H x 311/21N x 3 1/16D78 lbs. 5 oz.Dipole radiatcirFifteen 8" wiaofi ars; 4" midrange;21/2" tweeter35 Hz to 22 kH z600 Hz; 5 kHz4 ohms80 watts (19 d200 watts (23

BW)dBW)

$700341/2H x 221 /2W x 3 1/16D46 lbs. 5 ozDipole radii atorNine 6" wo ofers; 4" midrange; 2Wtweeter45 Hz to 22 kHz600 Hz; ' 5 kHz4 ohms80 watt's (19 dBW)150 wa Its (21 75 dBW)

TRACERBML E lectronics, Inc.5307 N. Ravonswood Ave.Chicagio, ILL.. 60640

Sound Rack,/Tracer 1501Price $4' 99Dimensic ms 51 H x 20W x 50WeightTypeDrive's

7'5 lbs.elifurcated transmission linef ;VI" mid -bass unit; 41/2" acoustic/pass radiator; 1 3/4" direct radiatortweeters

1980 Edition 77


Impedance! 5 ohmsMin. power 30 watts (14.75 dBW)Max. power 200 watts (23 dBW)Features Fuse protection; direct coupled

Sound lEnds/Tracer 701PriceDimensionsWeightTypeDrivers

ResponseImpedanceMin. powerMax. powerFeatures

$24919 1/4H x 18 1/2W x 5 1/4D25 lbs.Vented transmission line41/2" acoustic bass radiator; 11/2"direct radiator tweeters32 Hz to 20 kHz, +5 dB6 ohms30 watts (14.75 dBW)200 watts (23 dBW)Fuse protection; direct coupled

!Models also availableSound Window/Tracer 1001A,$349

TFI'ANSA UDIOQUi adrafliex Industries130 1 65t1h St.Eme ryvill e, Calif. 94608

1011 E3PriceDimensic cnsWeightTypeDriversResponseCrossoverImpedanceMin. powerMax. power

1008APriceDimensionsWeightTypeDriversResponseCrossoverImpedanceMin. powerMax. power

$10026H x 151/2W x 101/4D

.36 lbs.rekcoustic suspension1 2" woofer; 2'/2" cone tweeter4 0 Hz to 18 kHz, +4 dB1. 8 kHz8 ohms5 watts (7 dBW)60 watts (17.75 dBW)

$49.9518H x 111/2W x 81/2D

2'5 It's.A ,cou stic suspension8' wo ofer, 3" cone tweeter6(1 Hz to 16 kHz, +5 dB2 I '<Hz8 c rhm;l5 rafts (7 dBW)40 watts (16 dBW)

Models also available1010 B, $70

TRI-DELTATriangle Acou stics, Inc.12721 S.W. 68 th LaneMiami, Fla. 331'83

Tri-Delta IIIPrice $398Dimensions 29H x 34Weight 60 lbs.Type Air suspensDrivers Two 10" con 'e woofers; 5" cone mi-

drange; 4" di ome tweeterResponse 20 Hz to 23 1 cHz, +3 dB re 90 dB

SPL at 1 met er at 1 wattCrossover 500 Hz; 5 kHi Impedance 8 ohmsMin. power 15 watts (11.5 dBW)Max. power 200 watts (23 c IBW)Features Tetrahedron d esign, er lclosuremeasures 33" on an edge

1/2W x 28 3/4D

Tri-Delta IPrice $259 95Dimensions 241/2H x 281/4W x ;231ADWeight 37 lbs.Type Acoustic suspensior 1Drivers 10" cone woofer, 5" coi mi-

drange; 4" dome tweeterResponse 25 Hz to 22 kHz, +3 dB re 92 dB

SPL at 1 meter at 1 wattCrossover 700 Hz; 2.5 kHzImpedance 8 ohmsMin. power 10 watts (10 dBW)Max. power 75 watts (18.75 dBW)Features Tetrahedron design; enclosuremeasures 27" on an edge

Models also availableTn-Delta IIB, $350, Tn-Delta IIA,$312

TRUSONICTrusonic Co.10530 Lawson River Ave.Fountain Valley, Calif. 92708Monitor SevenPrice $990DimensionsWeightType

Drivers

Response


44H x 24W x 17D156 lbs. -

High -efficiency acoustic suspen-sionTwo 12" cast frame woofers; 6"cast frame midrange with 110ounce magnet structure; four solid-state tweeters25 Hz to 22 kHz, ±4 dB re 94 dBSPL at 1 meter at 1 watt500 Hz; 400 kHz4 ohms10 watts (10 dBW)250 watts (24 dBW)Midrange, ±5 dB; high range, ±5dB

Features Computer -assisted design: "Criti-cal 0" oiled -oak cabinet, brown double-knit grille

ULTRALINEARUltralinear Loudspeakers3228 E. 50th St.Los Angeles, Calif. 90058265PriceDimensionsWeightTypeDrivers

$419.95311/4H x 18W x 163/e D66 lbs.Ported duct15" foam -edge suspension low -fre-quency driver with large diameterhigh -temperature voice coil; 6"foam -suspension midrange trans-ducer in separate sealed enclo-sure; 1" high -output soft -domehigh -frequency radiator; 1" ultra-high -frequency Mylar dome radia-tor with refractive dispersionscreen

Response 25 Hz to 22.5 kHzCrossover 700 Hz; 4 kHz; 6 kHzImpedance 8 ohmsMin. power 12 watts (10.75 dBW)Max. power 90 watts (19.5 dBW)Controls Midrange and high -frequency

front -mounted levelFeatures Circuit breaker protected; walnutcabinet

DW-10PriceDimensionsWeightTypeDrivers


$249.95341/2H x 141/2W x 12D47 lbs.Air suspensionTwo 10" woofers; 6" midrange; two1/2" tweeters29 Hz to 19 kHz600 Hz; 3.5 kHz4 ohms8 watts (9 dBW)75 watts (18.75 dBW)

S-1 SubwooferPrice $249.95

DimensionsWeightDriversResponseImpedanceMin. powerMax. powerFeatures



77CPriceDimensionsWeightTypeDrivers

ResponseCrossoverImpedanceMin. powerMax. powerControlsFeaturescabinet

100CPriceDimensionsWeightTypeDrivers


82PriceDimensionsWeightDrivers


73/4H x 53/4W x 4 s/eD30 lbs10" woofers; 10" passive radiator29 Hz to 23 kHz8 ohms10 watts (10 dBW)70 watts (18.5 dBW)Bass cube of TM -116 system

$199.95243/eH x 141/2W x 12D35 lbs.Air suspension12" woofer; 41/2 midrange; 21/2

tweeter30 Hz to 19 kHz1.5 kHz; 4 kHz8 ohms8 watts (9 dBW)50 watts (17 dBW)

$179.95231/eH x 113/4W x 91/4D50 lbs.Air suspension10" foam -edge air -suspension low -frequency driver; 5" self -enclosededge -treated midrange transducer;21/2" edge -treated high -frequencyradiator32 Hz to 18 kHz1.8 kHz; 4 kHz8 ohms8 watts (9 dBW)50 watts (17 dBW)Front -mounted midrange levelCircuit breaker protected; walnut

$175244,8H x 141/2W x 12D35 lbs.Bass reflex12" high -compliance low -fre-quency driver; 41/2" sealed -backmidrange transducer; 21/2" edge -treated high -frequency radiator32 Hz to 18 kHz1 5 kHz, 4 kHz8 ohms5 watts (7 dBW)40 watts (16 dBW)Circuit breaker protected

$119.95201/2H x 113/4W x 91AD42 lbs.8" high -compliance woofer; 3" high -frequency radiator40 Hz to 16.5 kHz2.2 kHz8 ohms4 watts (6 dBW)35 watts (15.5 dBW)

Models also availableTM -116, $429.95; 228, $279.95;HPS-112, $249.95; 188, $239.95;DW-8, $179 95; 93, $149.95; 66A,$139.95

VERITWald Sound, Inc.11131 Dora St.Sun Valley, Calif. 91352

RL-X5PriceDimensionsWeightType

$47939H x 141/2W x 14,/eD53 lbs.Mass -compliance tuned passiveradiator


Tenney Seirkseey

Drivers

Response

CrossoverImpedanceMin. powerMax. powerControlsFeaturest,r r.ak,

RL-X3PriceType

Drivers

Response

Min. powerMax. powerControlsFeaturesbreaker

Technics SB-7070

12" woofer; 51/2" midrange; 2" x 5"horn tweeter25 Hz to 30 kHz, ±5 dB re 97 dBSPL at 1 meter at 1 watt700 Hz; 3 kHz8 ohms15 watts (11.75 dBW)100 watts (20 dBW)Midrange; tweeter12" passive radiator in back; circuit

$269Mass -compliance tuned passiveradiator10" woofer; 51/2" midrange; 2" x 5"horn tweeter40 Hz to 30 kHz, ±5 dB re 96 dBSPL at 1 meter at 1 watt10 watts (10 dBW)55 watts (17.5 dBW)Midrange; tweeter10" passive radiator in back; circuit

Models also availableRL X4 $329

VERMONT WOOD CRAFTSVermont Wood Crafts, Inc.P.O. Box 206Depot St.Proctorsville, Vt. 05153

SL -5PriceDimensionsWeightTypeDrivers

ResponseCrossoverImpedanceMin. powerMax. powerControlsFeatures:t ands

SL -1PriceDimensionsWeightTypeDrivers


1980 Edition

$199.95341/2H x 181/2W x 121/2045 lbs.Bass reflex15" woofer; 31/2" midrange; two2I/2" direct -radiating tweeters32 Hz to 20 kHz, ±3 dB1 kHz; 6 kHz8 ohms10 watts (10 dBW)70 watts (18.5 dBW)Tweeter; midrangeCircuit breaker; attached floor

$79.9520H x 12W x 8D21 lbs.Bass reflex8" woofer; 3" phenolic radiatortweeter40 Hz to 18 kHz, ±4 dB2.5 kHz8 ohms5 watts (7 dBW)30 watts (14.75 dBW)




D-602PriceDimensionsWeightTypeDriversResponseCrossoverImpedanceMin. powerMax. power

D-5000Price

Tschnisound Model 1200

Ultralinear 265 Disco Monitor

Models also availableSL -4. $179 95 SL -3, $119 95 SL2 $99 95

VISONIK HIFIVisonik of America, Inc.701 Heinz St.Berkeley, Calif. 94710

David 9000PriceDimensionsWeightTypeDrivers

Response

Crossover

Min. powerMax. power

$300143/4H x 93/4W x 91/4D19 lbs. 12 oz.Air suspension7" woofer; 11/2" midrange; 3/4"

tweeter35 Hz to 25 kHz, +4, -8 dB re 87dB SPL at 1 meter at 1 watt900 Hz; 4.5 kHz

ohms20 watts (13 dBW)120 watts (20.75 dBW)

David 6000Price $150Dimensions 73/4H x 5V4W x 5DWeight 6 lbs. 12 oz.Type Acoustic suspensionDrivers 4" woofer; 1" soft -dome tweeterResponse 45 Hz to 25 kHz, +4, -8 dB re 84

dB SPL at 1 meter at 1 watt2.5 kHz4 ohms10 watts (10 dBW)70 watts (18.5 dBW)

$250 (black); $280 (walnut)121/4H x 73/4W x 8D19 lbs.Acoustic suspensionPh" woofer; 11/2" dome midrange;3/4" dome tweeter30 Hz to 30 kHz, +4, -8 dB'.1 kHz; 4.5 kHz4 ohms10 watts (10 dBW)120 watts.(20.75 dBW)

$160 (black); $170 (walnut)91/4H x 53/4W x 53/4D9 lbs.Acoustic suspension5" woofer; 1" dome tweeter38 Hz to 25 kHz, +4 dB, -8 dB1.4 kHz4 ohms15 watts (11.75 dBW)80 watts (19 dBW)

$130 (optional bracket, 310)

Dimer sionsWeigbtTypeDriversRespcnseCrossoverImpedanceMin. powerMax. powerFeatures

York Yodel RL-X5

63/4H x 41/4W x 41/4D5 lbs. 8 oz.Acoustic suspension4" woofer; 1" soft -dome tweeter50 Hz to 25 kHz, +4 dB, -8 dB2.5 kHz4 ohms10 watts (10 dBW)50 watts (17 dBW)Recommended for auto use with

Visonik automotive amplifier

SUBWOOFER SERIES

SUB 2PriceDimerrsionsWeightTypeDriversResponseCrossoverImpedanceMin. powerMax. powerFeaturesover

$30019H x 14W x 11D38 lbs.Acoustic suspension10" dual voice -coil woofer24 Hz to 25 kHz, +4 dB, -8 dB150 Hz; 2.5 kHz4 ohms40 watts (16 dBW)240 watts (23.75 dBW)Mini subwoofer with built-in cross-

EURO SERIES

Euro 5PriceDimensionsWeightTypeDriversResponseCrosscverImpedanceMin. pcwerMax. power

$20019H x 11W x 91/4D24 lbs.Acoustic suspension8" woofer; 1" soft -dome tweeter35 Hz to 25 kHz, +4 dB, -8 dB1.3 kHz4 ohms10 watts (10 dBW)60 watts (17 75 dBW)

Models also availableDavid 7000, $185; David 4000,$110; D-702, $210 (black); $240(walnut); D-502, $120; SUB 1,

$400: Euro 7, $360

DICK WAGNERDick Wagner5930 Penfield Ave.Woodland Hills, Calif. 91367

DW-1PriceDimens onsWeightTypeDrivers

Response

$6,000/pr63H x 48W x 20D160 lbs.Sealed woofer; dipolar midrangeEight 12" woofers; sixteen 4" mi-drange drivers; four dome tweet-ers; one omni27 Hz to 19 kHz, ± 5 dB re 87 dBSPL at 1 meter at 1 watt

79

Crossover 450 Hz; 6.5 kHz (electronicallyvariable triamp)

Impedance 8 ohmsMin. power 100 watts (20 dBW)Max. power 1,000 watts (30 dBW)Controls Continuously variable triampFeatures Over 120 dB output with no distor-tion and breakup

WATSONWatson Laboratories2711 Rena RoadMississauga, Ont. L4T 3K1,Canada

25WPriceDimensionsWeightTypeDrivers

Response


$1,65017H x 52W x 34D130 lbs.Subwoofer; inert gas suspension8" x 10" total voice -coil lengthequivalent to 16" diameter voicecoil on 24" diameter woofer17 Hz to 150 kHz, +3 dB re 93 dBSPL at 1 meter at 1 watt150 Hz4 to 8 ohms100 watts (20 dBW)500 watts (27 dBW)Coffee-table styling

Model FivePrice $840/pr.Dimensions 32H x 15W x 143/eDWeightTypeDrivers

Response


38 lbs.Inert gas suspension10" woofer; 6" midrange; 1" soft -dome tweeter30 Hz to 20 kHz, +3 dB re 91 dBSPL at 1 meter at 1 watt510 Hz; 3 kHz5 ohms50 watts (17 dBW)150 watts (21.75 dBW)Square -wave response capabilityfrom 150 Hz to 5 kHz

Features Free-standing midrange andtweeter units may be aligned vertically or horizon-tally

Models also availableModel Ten, $2,387; Model Seven,$1,417

WHARFEDALERank Hi-Fi Inc.20 Bushes LaneElmwood Park, N.J. 07407

E-90PriceDimensionsWeightTypeDrivers

$850453/8H x 15 3/16W x 143/4D112 lbs.Bass reflexTwo low -mass 10" woofers; two 4"high -flux cone midrange drivers;compression -drive horn tweeter


Crossover 1 kHz; 5 kHzImpedance 8 ohmsMin. power 15 watts (11.75 dBW)Max. power 280 watts (24.5 dBW)Features Matched -grain walnut finish;removable open -mesh black -grille cloths; casters

E-50PriceDimensionsWeightTypeDrivers

$46026H x 131/2W x 131/2D42 lbs.Bass reflex10" woofer; 4" cone midrange; 1

Response


compression drive hom-loadectweeter55 Hz to 18 kHz, +3 dB re 94 dBSPL at 1 meter at 1 watt800 Hz; 7 kHz8 ohms3 watts (4.75 dBW)70 watts (18.5 dBW)

Controls Low -frequency; tweeterFeatures Natural walnut veneer on high -den-sity particle board; internal cabinet damping of highhysteresis expanded polyurethane foam; matchedpairs

L-300Price $300Dimensions 26 3/16H x 131/2W x 13 13/16DType Acoustic suspensionDrivers 10" woofer; 4" midrangeResponse 38 Hz to 26 kHz, +3 dB re 88 dB

SPL at 1 meter at 1 wattCrossover 1 kHz; 5.5 kHzImpedance 6 ohmsMin. power 10 watts (10 dBW)Max. power 90 watts (19.5 dBW)Features Hand -finished in walnut veneir;matched pairs; laser -beam holography/computer-optimization of bass drivers and cabinet size

XP -60 LintonPriceDimensionsTypeDrivers

Response


$175183/4H x 101/2W x 91/2DAcoustic suspension8" woofer; 4" cone midrange driver,3/4" dome tweeter60 Hz to 20 kHz, +3 dB re 87 dBSPL at 1 meter at 1 watt1 kHz; 4.5 kHz6 ohms10 watts (10 dBW)35 watts (15.5 dBW)Low frequency; tweeter

XP -20 DentonPrice $99Dimensions 14H x 10W x 9DType Acoustic suspensionDrivers 61/2" woofer; 2" tweeterResponse 65 Hz to 18 kHz, ±3 dB re 88 dB

SPL at 1 meter at 1 wattCrossover 1.4 kHz; 3.5 kHzImpedance 6 ohmsMin. power 10 watts (10 dBW)Max. power 25 watts (14 dBW)Features Matched pairs; brown jersey clothgrille; natural walnut -veneer finish

Models also availableE-70, $560. E-30, $340; XP -80Glendale, $225; XP -40 Shelton,$125

YAMAHAYamaha International Corp.6600 OrangethorpeBuena Park, Calif 90620

NS -1000PriceDimensionsWeightTypeDrivers


$1,500/pr.28H x 15V2W x 141/2D85 lbs. 13 oz.Acoustic suspensionWoofer; beryllium dome midrange;beryllium dome tweeter40 Hz to 20 kHz500 Hz; 6 kHz8 ohms50 watts (17 dBW)

Max. power 100 watts (20 dBW)Controls Midrange; tweeterFeatures Choice of ebony or black finish











$1,060/pr.191/4H x 143/4W x 121/2D68 lbs. 3 oz.Sealed enclosure12" cone woofer; 43/4" cone mid/bass; 2" beryllium dome mid/high;1W beryllium dome tweeter40 Hz to 20 kHz600 Hz; 2 kHz; 6 kHz8 ohms40 watts (16 dBW)80 watts (19 dBW)Mid/high; tweeter (continuouslyvariable)

$640/pr.26 3/16H x 14 9/16W x 12 7/16D51 lbs. 13 oz.Acoustic suspension12" cone woofer; 43/4" cone mi-drange; 1 3/16" beryllium dometweeter40 Hz to 20 kHz700 Hz; 6 kHz8 ohms35 watts (15.5 dBW)70 watts (18.5 dBW)Midrange; tweeter (continuouslyvariable)

$480/pr.22H x 13W x 12D30 lbs. 6 oz.Acoustic suspension10" cone woofer; 5" cone mi-drange; 11/4" soft -dome tweeter50 Hz to 38 kHz700 Hz; 6 kHz8 ohms35 watts (15.5 dBW)70 watts (18.5 dBW)Midrange (+3dB to -oo); tweeter(+1.5dB to -oo)

$340/pr.21H x 121/2W x 113/4D25 lbs. 5 oz.Acoustic suspension10" cone woofer; 11/4" soft -dometweeter50 Hz to 38 kHz2 kHz8 ohms30 watts (14.75 dBW)60 watts (17.75 dBW)Level, +3 dB (max); -00 (min)

$260/pr23H x 13W x 101/2D35 lbs.Acoustic suspension10" long -throw woofer; 1" soft -dome tweeter45 Hz to 20 kHz, +3 dB1 kHz8 ohms10 watts (10 dBW)50 watts (17 dBW)

Models also availableNS 1000M $1.120/pr , NS -690Mark II, $750/pr , NS -8, $420/pr ,NS -10M, $270/pr , NS -4, $190/pr.


Car Stereo Speakers

ADSAnalog & Digital SystemsOne Progress WayWilmington, Mass. 01887

L -300iPrice $118Dimensions 81/2H x 5 7/10W x 3D (11/2" above

surface; 11/2" below surface)Configuration 2 -WayResponse 50 Hz to 20 kHz, ±3 dB re 90 dB

SPL at 1 meter at 1 wattMin power 10 watts (10 dBW)Max power 100 watts (20 dBW)Impedance 4 ohmsDriver size 1" soft -dome tweeter; 51/4" wooferMounting Flush

AFS/KRIKETAcoustic Fiber SoundSystems, Inc.8050 Castleway DriveIndianapolis, Ind. 46250

6099Price $80 eachDimensions 53/4H x 11W x 91/2DConfiguration 2 -wayResponse 50 Hz to 20 kHz, ±5 dB re 87 dB

SPL at 1 meter at 1 wattMin power 2 wattsMax power 40 wattsImpedance 4 to 8 ohmsDriver size 5V4"Magnet 10 oz.Mounting Flush or surface

8974Price $110/kitDimensions 63/5H x 9W x 33/eDConfiguration 2 -WayResponse 40 Hz to 20 kHz, ±5 dB re 95 dB

SPL at 1 meter at 1 watt2 watts (3 dBW)50 watts (17 dBW)4 to 8 ohms6" x 9"20 oz.Flush

Min powerMax powerImpedanceDriver sizeMagnetMounting

8231Price $50/kitDimensions 5V4W x 21/2DConfiguration Dual coneResponse 55 Hz to 15 kHz, ±5 dB re 92 dB

SPL at 1 meter at 1 wattMin power 2 watts (3 dBW)Max power 25 watts (14 dBW)Impedance 4 to 8 ohmsDriver size 51/4"

Magnet 10 oz.Mounting Flush

6049Price $40

Dimensions 53/4H x 11W x 93/40Configuration Dual coneResponse 60 Hz to 15 kHz, ±5 dB re 90 d8

SPL at 1 meter at 1 wattMm power 2 watts (3 dBW)Max power 25 watts (14 dBW)Impedance 4 to 8 ohmsDriver size 51/4"Magnet 10 oz.Mounting Flush or surface

8932Price $65/kitDimensions 61/4H x 91/sW x 3V4DConfiguration CoaxialResponse 45 Hz to 18 kHz, ±5 dB re 94 dB

SPL at 1 meter at 1 wattMin power 2 watts (3 dBW)Max power 35 watts (15.5 dBW)Impedance 4 to 8 ohmsDriver size 6" x 9"Magnet 10 oz.Mounting Flush

8931Price $55/kitDimensions 61/sH x 91/4W x 3V4DConfiguration Dual coneResponseMin powerMax powerImpedanceDriver sizeMagnetMounting

45 Hz to 15 kHz2 watts (3 dBW)35 watts (15.5 dBW)4 to 8 ohms6" x 9"10 oz.Flush

8531Price $50/kitDimensions 41/2H x 2DConfiguration Dual coneResponse 65 Hz to 15 kHz, ±6 dB re 92 dB

SPL at 1 meter at 1 watt2 watts (3 dBW)25 watts (14 dBW)8 ohms5"10 oz.Flush

Min powerMax powerImpedanceDriver sizeMagnetMounting

Models also available6079, $65; 6059, $55; 6069, $50;8972, $85/kit; 8232, $70/kit; 8032,$75/kit; 2732, $28; 7311, $9

ALTUSAltus Corp.6 Main StMelrose, Mass. 02176

SK -6696 PowersonicPrice $116.95Configuration 3 -wayResponse 50 Hz to 20 kHzMax power 50 watts (17 dBW)Impedance 8 ohmsDriver size 6" x 9"Magnet 20 oz.

Mounting FlushFeatures Foam -roll. suspension; 11/2" voicecoil

SK -6595 PowersonicPrice $86 95Configuration 2 -way coaxial

50 Hz to 20 kHz25 watts (14 dBW)8 ohms6" x 9"20 oz.FlushFoam -roll suspension

ResponseMax powerImpecanceDriver sizeMagnetMountingFeatures

Models also availableSK -6393 Powersonic, $66.95; SK -6292 Powersonic, $59.95

AMERICAN ACOUSTICS LABAAL Speaker Systems629 W. Cermak RoadChicago, III. 60616

Micro 100BPrice $119Dimensions 73i4hi x 45/6W x 4 9/16DConfiguration 2 -wayResponse 50 Hz to 20 kHz re 84 dB SPL at 1

meter at 1 wattMm power 5 watts (7 dBW)Max power 50 watts (17 dBW)Impedance 4 ohmsDriver size 4" woofer; 1' tweeterMounting SurfaceFeatures 5 -year warranty

Blaster WooferPriceDimensions

Blas...er Midrange HornPrice 5119Driver size 4 x 1L,

Models also availableBlaster Woofer, $89; Blaster Su-pertweeter, $12

AUOOTEXGC Electronics400 South WymanRockford, III. 61101

30-2648Price $91.95Configuration 3 -wayResponse 70 Hz to 20 kHzMax pcwer 25 watts (14 dBW)Impedance 4 to 8 ohmsDriver size 4" x 10"Magnet 20 oz.Mounting FlushFeatures Includes 2 speakers, grilles, wiring,and hardware

1980 Edition 81

30-2646Price $53.45Configuration Dual coneResponse 70 Hz to 16 kHzMax power 25 watts (14 dBW)Impedance 4 to 8 ohmsDriver size 4" x 10"Magnet 20 oz.Mounting FlushFeatures Includes 2 speakers, grilles, wiring,and hardware

30-3072Price $38.70Configuration 2 -wayResponse 40 Hz to 18 kHzMax power 35 watts (15.5 dBW)Impedance 4 to 8 ohmsDriver size 6" x 9"Magnet 25 oz.Mounting FlushFeatures Also available as 30-2654, whichincludes 2 speakers, grilles, wiring, and hardware

30-3071Price $31.20Configuration 2 -wayResponse 45 Hz to 18 kHzMax power 25 watts (14 dBW)Impedance 4 to 8 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting FlushFeatures Also available as 30-2653, whichincludes 2 speakers, grilles, wiring and hardware

30-3065Price $22.10Configuration Dual coneResponse 50 Hz to 16 kHzMax power 25 watts (14 dBW)Impedance 4 to 8 ohmsDriver size 51/4' (round)Magnet 20 oz.Mounting FlushFeatures Also available as 30-2642, whichincludes 2 speakers, grilles, wiring, and hardware

30-3053Price $18.60Configuration Dual coneResponse 50 Hz to 16 kHzMax power 20 watts (13 dBW)Impedance 4 to 8 ohmsDriver size 6" x 9"Magnet 10 oz.Mounting FlushFeatures Also available as 30-2650, whichincludes 2 speakers, grilles, wiring, and hardware

30-3064Price $17 70Configuration Dual coneResponse 55 Hz to 15 kHzMax power 20 watts (13 dBW)Impedance 4 to 8 ohmsDriver size 51/4" (round)Magnet 10 oz.Mounting FlushFeatures Also available as 30-2641, whichincludes 2 speakers, grilles, wiring, and hardware

30-3063Price $16.15Configuration Dual coneResponse 60 Hz to 15 kHzMax power 16 watts (12 dBW)Impedance 4 to 8 ohmsDriver size 51/4" (round)Magnet 5.5 oz.Mounting FlushFeatures Also available as 30-2640, whichincludes 2 speakers, grilles, wiring, and hardware

Models also available30-5121, $99 50/pr.; 30-2647,$80.55, 30-3074, $39.10; 30-3066.$31.75; 30-3070, $27.40; 30-3054.$22.10; 30-3047, $17.70; 30-3056,$17.35

AVIDAvid Corp.10 Tripps LaneEast Providence, R.I.02914

TenPrice $225/pr.Dimensions 1 9/16H x 11 3/4W x 7 3/eDConfiguration 2 -way (5 kHz crossover)Response 60 Hz to 20 kHz, ±5 dBMin power 5 watts (7 dBW)Max power 100 watts (20 dBW)Impedance 4 ohmsDriver size 61/2" woofer; 1" soft -dome tweeterMagnet 20 oz. (woofer); 10 oz. (tweeter)Mounting SurfaceFeatures Two-way rear -deck design; limited5 -year warranty; comes complete with wiring; alsoavailable as Avid Ten Plus System (RD -5) with41/2" door units, $250

RD -5Price $40 pr.Dimensions 5H x 5W x 21AIDConfiguration Full rangeResponse 100 Hz to 10 kHzMin power 8 watts (9 dBW)Max power 60 watts (17.75 dBW)Impedance a ohmsDriver size 41/2"Magnet 12 oz.Mounting DoorFeatures Protective grille and water cover

BIG ROCKOlson Electronics260 S. Forge St.Akron, Ohio 44327

SP -470Price $89.98/pr.Dimensions 3H x 6W x 9DConfiguration 3 -wayResponse 80 Hz to 15 kHzMin power 2 watts (3 dBW)Max power 50 watts (17 dBW)Impedance 8 ohmsDriver size 6" x 9" woofer; 21/2" midrange; two

13/4" tweetersMagnet 30 oz.Mounting FlushFeatures Matched ABS grilles; mountinghardware and wire included; cloth roll air suspen-sion woofer cone

SP -388Price $34.98Dimensions 9H x 6W x 31/4DConfiguration 2 -wayResponse 50 Hz to 18 kHzMin power 3 watts (4.75 dBW)Max power 25 watts (14 dBW)Impedance 8 ohmsDriver size 6" x 9" (3" tweeter)Magnet 20 oz.Mounting FlushFeatures 13" tweeter; foam roll suspension;11/4" copper voice coil

SP -513Price $27.98Dimensions 10H x 4W x 23/4D

Configuration 2 -wayResponse 50 Hz to 17 kHzMin power 2 watts (3 dBW)Max power 20 watts (13 dBW)Impedance 8 ohmsDriver size 4" x 10" (2" tweeter)Magnet 20 ozMounting FlushFeatures 1" voice C011; 2" tweeter

Models also availableSP -389, $41 98, SP -516, $28.98;SP -387, $19.98

BLAUPUNKTRobert Bosch Corp.2800 S. 25th Ave.Broadview, III. 60153

729 000Price $85

728 000Price $155/pr.Dimensions 63/4H x 91/4W x 33/4DConfiguration 3 -wayResponse 40 Hz to 20 kHzMin power 15 watts (11 75 dBW)Max power 40 watts (16 dBW)Impedance 4 ohmsMounting Flush

676 000Price $71.40Dimensions 51/2H x 844W x 1314DConfiguration 2 -wayResponseMin powerMax powerImpedanceFeatureschamber

70 Hz to 20 kHz15 watts (11.75 dBW)25 watts (14 dBW)4 ohmsFlush unique under -deck acoustic

688 000Price $134.25/pr.Dimensions 63/sH x 91/4W x 33/4DConfiguration 2 -wayResponse 40 Hz to 16 kHzMin power 20 watts (13 dBW)Max power 35 watts (15.5 dBW)Impedance 4 ohmsMounting Flush

721 000Price $41.40Dimensions 61/4H x 51hW x 53/4DConfiguration Air suspensionResponse 70 Hz to 15 kHzMax power 25 watts (14 dBW)Impedance 4 ohmsMounting Surface

733 060Price

726 000Price $25

$62/pr

Models also available731 000, $85, 639 000, $71.40; 687000, $120/pr.; 725 060, $73.50/pr.; 724 060, $34.30; 727 000,$34.25; 736060, $44/pr.

BOMANBoman Industries9300 Hall RoadDowney, Calif. 90241


SK-4000GLPrice $159.95/pr.Min power 35 watts (15.5 dBW)Impedance 4 ohmsDriver size 6" woofer; 3" midrange; 1" tweeter

horn; 1" dome tweeterMagnet 40 ozFeatures Built-in audio spectrum diffuser;built-in high- and mid -frequency equalizer attenua-tion control

SK-69TR4OGLPrice $79.95/prConfiguration 3 -way TrisonicMin power 25 watts (14 dBW)Impedance 4 ohmsDriver size 6" x 9" woofer; 3" midrange; 2"

tweeter hornMagnet 40 oz.Mounting FlushFeatures Built-in audio spectrum diffuser

SK-1020CX2OGLPrice $59.95/pr.Configuration CoaxialMin power 25 watts (14 dBW)Impedance 4 ohmsDriver size 6" woofer; 2" tweeter hornMagnet 40 oz.

SK-69CX 20GLPrice $59 95/prConfiguration 2 -way coaxialMin power 25 watts (14 dBW)Impedance 4 ohmsDriver size 6" x 9" woofer, 3" tweeter hornMagnet 40 ozMounting FlushFeatures Same as Model SK-69TR4OGL

SK -690NPrice $34.95/prMin power 12 watts (1075 dBW)Impedance 4 ohmsDriver size 6" x 9" woofer; 2" tweeterMagnet 12 ozMounting FlushFeatures Same as Model SK -1010N

SK -1010NPriceMin powerImpedanceDriver sizeMagnetFeatures

SK -450NPriceMin powerImpedanceDriver sizeMagnetMountingFeatures

SK -550NPriceMin powerImpedanceDriver sizeMagnetMountingFeatures

$32 95/pr10 watts (10 dBW)4 ohms5" woofer20 ozAudio reflective grille

$22 95/pr6 watts (7 75 dBW)4 ohms4" woofer6 oz.FlushSame as Model SK -680N

$14 95/pr8 watts (9 dBW)4 ohms5" woofer5 ozFlushSame as Model SK -1010N

Models also availableSK-410TR4OGL, $79 95/pr SK-525TR40GL, $74 95/pr , SK-410CX2OGL, $59 95/pr . SK-525CX20GL, $49 95/pr ; SK -680N, $34 95/pr , SK -660N,$26 95/pr . SK -75N. $22 95/pr ,SK -650N. $21 95/pr

BOSEBose Corp.100 The Mountain RoadFramingham, Mass. 01701

1401 Car Stereo SystemPrice 5328 95Dimensions 11/2H x 10W x 4'/2D (equalizer)Configuration Full -range with active electronic

equalizerMin power 025 watts (-6 dBW)Max power 25 watts (14 dBW)Impedance 0.45 ohmsDriver size 41/2"

Magnet 9 1 ozMounting FlushFeatures Speaker and booster/equalizersystem; equalizer mounted under dash; output ofequalizer 50 watts 117 dBW) per channel continu-ous into 045 ohms from 40 Hz to 17 kHz with nomore than 0.09% THD

BRAUNAdcom11A Jules LaneNew Brunswick, N.J. 08901

Output CPrice $279/pr (with brackets)Dimensions 63/4H x 41AW x 43/8DConfiguration 2 -wayResponseMm powerMax powerImpedanceDriver size

50 Hz to 25 kHz10 watts (10 dBW)35/50 watts (15.5/17 dBW)4 ohms4" woofer, 1" dome tweeter

Magnet 18 oz (woofer)Mounting SurfaceFeatures Original mini speaker from Braun;aluminum cabinet 5mm thick; crossover at 1.5 kHz;12 dB/octave; employs long -throw woofer andcomputer -calculated crossover network; bracketallows maximum flexibility in mounting; paddedrubber edging acts as cushion

CANTONAdcom11A Jules LaneNew Brunswick, N.J. 08901

AC -200Price

$Dimensions 4325/05H x 7 3/5W x 53/sDConfiguration Powered, biamplified two-way sys-

temResponse 48 Hz to 25 kHzDriver size 4 1/3" woofer; 9/1(Y dome tweeterMounting SurfaceFeatures Designed to run off car stereospeaker output; can also be operated with low-level source such as a preamplifier; active cross-over at 1.7 kHz: 20 -watt amplifier for the woofer; 5 -watt amp for the tweeter; woofer amp is a bridge -switching amp with direct coupling; S/N 78 dB:THD. 0.03% at 20 watts, 40 Hz to 2 kHz; high -frequency amp is a single amp with S/N, 74 dB;THD 0.5% at 5 watts, 1.5 kHz to 12 5 kHz; cross-over at 12 dB/octave; input voltages: 3V to 60ohms or 300 my to 50 ohms for full modulation;ground interference suppression: 45 dB; enclosuremade of die-cast aluminum, finished in black

Models also availableHC -100 $210/pr

CAR -FlCar-Fi International152 W. Cypress Ave.Burbank, Calif. 91502

ADVERTISING INDEX

Key No. Page No.

1 Allison Acoustics Inc 105

2..._Altec Lansing 19

3..._American Acoustics

Labs Cover II, 1

4 Audio Pro 115

Audio Pulse, Inc. 105

Avid Corp. Cover III

6 BIC/Avnet 24

Bose Corp. 8

7....Carston Stereo 109

8 Cerwin Vega 95

9.... Dahlquist 29

36.... Dalco Speaker Works 102

10.... Discount Music Club 104

11.... Discwasher, Inc Cover III

33.... District Sound 102

34.... Dynaco 91

12 Electro-Voice 9213 Epicure Products, Inc. 103

14.... ESS, Inc. 101

15 Illinois Audio 116

16 International Hi Fi 116

17.... JBL 7

18.... Jensen Sound Laboratories 10, 11

19.... J & R Music World 90

20 KEF Electronics, Ltd 27

21 Kenwood 21

22.... Klipsch & Associates 32

35.... Koss Corp. 23

23 Martin Speaker Division 109

24 Mesa Electronics 30, 3125 Mitsubishi Audio Systems 14, 15

26.... -Ohm Acoustics Corp. 4

27 Pan American Electronics 108

z8 Polk Audio Inc 2

29 Rank Hi Fi Inc. 99

30 Scott, H. H., Inc 13

33 Sound Reproduction 102

Speakerlab 10831 Stereo Corp 104

32 Unitronex Corp 106, 107

1980 Edition85

CS -4Price $239 97Dimensions 6H x 9W x 4DConfiguration 3 -wayResponse 40 Hz to 30 kHz. 1- 2 dB re 93 dB

SPL at 1 meter at 1 wattMin power 4 watts (6 dBW)Max power 50 watts (17 dBW)Impedance 4 ohmsDriver size 6" x 9"Magnet 30 oz.Mounting Flush or surfaceFeatures Samarium cobalt tweeter soft -

dome midrange; biamp compatible

Cs -1Price $89 95Dimensions 6H x 9W x 4DConfiguration WooferResponse 40 Hz to 2 kHz, 2 dB re 94 dB

SPL at 1 meter at 1 wattMin power 4 watts (6 dBW)Max power 45 watts (16.5 dBW)Impedance 4 ohmsDriver size 6" x 9"Magnet 30 oz.Mounting Flush or surface

Models also availableCS -3, $149 95; CS -2, $129 95

CLARIONClarion Corp. of America5500 Rosecrans Ave.Laundale, Calif. 91260

SK -103Price $174 50Dimensions 5H x 13W x 2DConfiguration 3 -wayResponse 60 Hz to 20 kHz, ) 3 dBMax power 30 watts (14 75 dBW)Impedance 8 ohmsDriver size 6" x 9"Magnet 20 ozMounting Flush

SK -106Price $69 95Configuration WooferResponse 100 Hz to 16 kHz, 5 dB re 95 dB

SPL at 1 meter at 1 watt (whenused with SK -105 tweeter/mi-drange)

Min power 50 watts (17 dBW)Max power 100 watts (20 dBW)Impedance 8 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting FlushFeatures To be used with SK -105 tweeter/midrange; 1'/2" aluminum bobbin voice coil

SK -105Price $69 95Dimensions 31/2H x 5W x 10Configuration 2 -way tweeter/midrangeResponse 100 Hz to 16 kHz, f 5 dB re 95 dB

SPL at 1 meter at 1 watt (whenused with SK -106 woofer)

Min power 25 watts (14 dBW)Max power 50 watts (17 dBW)Impedance 8 ohmsDriver size 3" midrange; 1" tweeterMounting SurfaceFeatures To be used with SK -106 woofer,adjustable level control; Mylar capacitor crossover

Models also availableSK -102, $156 50, SK -99B,$136 95

EPIEpicure Products, Inc.One Charles St.Newburyport, Mass. 01950

LS -70Price $150/pr.Dimensions 101/4H x 7W x 3'/20Configuration 2 -wayResponse 70 Hz to 20 kHz, 3 dB re 87 dB

SPL at 1 meter at 1 wattMin power 12 watts (10.75 dBW)Max power 60 watts (17.75 dBW)Impedance 8 ohmsDriver size 6" woofer; 1" tweeterMagnet 24 oz. (18 oz. woofer; 6 oz.

tweeter)Mounting Flush/surfaceFeatures Individually -run frequency -re-sponse graph supplied with each unit; can bemounted in 6" x 9" cutout or in 5" or 4" cutout withoptional adapters

Companion Speaker System(CSS) LS 35 Speaker and LCSLevel Control SystemPrice $45Dimensions 3'/2W x 13/4DConfiguration Full rangeMin power 15 watts (11.75 dBW)Max power 60 watts (17.75 dBW)Impedance 8 ohmsDriver size 31/2" (5" round grille)Mounting FlushFeatures High power -handling capability;Level Control System (LCS) balances sound in thecar, available for $50

FOSGATEFosgate Electronics, Inc.2935 West Fairmount Ave.Phoenix, Ariz. 85017

PRS-690Price $120Dimensions 6H x 9WConfiguration 2 -wayResponse 35 Hz to 16 kHz, +6 dBMin power 20 watts (13 dBW)

50 watts (17 dBW)4 ohms6" x 9"20 oz.Flush

Max powerImpedanceDriver sizeMagnetMounting

Models also availablePRS 500 $100

FULTRONArthur Fulmer260 MonroeMemphis, Tenn. 38101

15-9260Price $149.95Dimensions 61/2DConfiguration 2 -wayMax power 25 watts (14 dBW)Impedance 4 or 8 ohmsMounting SurfaceFeatures Die-cast aluminium housingbrilliance control

15-9696Price $79.95Dimensions 6H x 9W x 33/4DConfiguration 4 -wayMax power 30 watts (14.75 dBW)Impedance 4 to 8 ohms

with

Magnet 30 oz.Mounting FlushFeatures Aluminium voice coil; deluxe quick -mount mesh grille

15-9590Price $69.95Dimensions 4H x 100/ x 61/2DConfiguration 3 -wayMax power 20 watts (13 dBW)Impedance 4 to 8 ohmsMagnet 20 oz.Mounting FlushFeatures Aluminum voice coil; deluxe quick -mount mesh grille

15-9670Price $49.95Dimensions 31/2D

Max power 25 watts (14 dBW)Impedance 4 or 8 ohmsMagnet 20 oz.Mounting FlushFeatures Aluminium voice coil; deluxe quick -mount mesh gille

15-9440Price $26.95Dimensions 51/4W x 21 DConfiguration Single coneMax power 10 watts (10 dBW)Impedance 4 to 8 ohmsMagnet 10 oz.

15-9220Price $14.95Dimensions 6'/8DConfiguration Twin wedgeMax power 5 watts (7 dBW)Impedance 4 to 8 ohmsMagnet 3 oz.Mounting Surface

Models also available15-9665, $99.95; 15-9690, $70;15-9490, $60; 15-9470, $46.95;15-9430, $24.95; 15-9240, $21.95;15-9420, $15.95

GRUNDIGLAS Electronics East, Inc.85C Saratoga Blvd.Island Park, N.Y. 11558

KossackPriceMax powerImpedanceDriver size

$9830 watts (14.75 dBW)4 ohms41/2" woofer; 2" tweeter

H F-2040Price $110/pr.Dimensions 47/8H x 93/8W x 41/20Configuration 2 -wayResponse 30 Hz to 20 kHzMin power 20 watts (13 dBW) (nominal)Max power 40 watts (16 dBW)Impedance 4 ohmsDriver size 41/2" woofer, 2" cone tweeter

GLA-1640Price $49.90/pr.

Models also availableHF-2025, $75/pr GLA-1230,$39 90/pr

HANDICHandic U.S.A., Inc.15945 N.W. 57th Ave.Hialeah, Fla. 33014

$6 High Fidelity's Buying Guide to Speaker Systems

AFS K Hite! 6099

Altus Sit -6595

sawn soc-anocii.

!Braun Output C

Tonna HE -481

Marantz SS -569

Sound Sarrlar Phanton-11111

CL -225Price $130Dimensions 41/2H x 93/8W x 47/13DConfiguration 2 -wayResponse 40 Hz to 20 kHzMin power 1 watt (0 dBW)Max power 40 watts (16 dBW)Impedance 4 ohmsMounting SurfaceFeatures Sealed; air suspension

Models also availableCL -12 $29 95

HEDCerwin-Vega, Inc.12250 Montague St.Arleta, Calif. 91331

CS -15Price $130/pr.Dimensions 61/2H x 9W x 31/2DConfiguration 2 -wayResponse 40 Hz to 20 kHz, +4 dB re 95 dB

SPL at 1 meter at 1 wattMin power 2 watts (3 dBW)Max power 75 watts (18.75 dBW)Impedance 4 ohmsDriver size 6" x 9"Magnet 80 oz.Mounting FlushFeatures Rugged construction

CS -7Price $90/pr.Dimensions 61/2H x 91/2W x 3DConfiguration 2 -wayResponse 50 Hz to 16 kHz, +4 dB re 96 dB

SPL at 1 meter at 1 watt

Jenson J-1037

Min powerMax powerImpedanceDriver sizeMagnetMountingFeatures

Amor1can Acoustics Lab Micro 100

Grundlgl4F-2040

Yawn& 6000

2 watts (3 dBW)40 watts (16 dBW)4 ohms6" x 9"26 oz.FlushHigh -efficiency

Models also availableCS -10, $115/pr

HITACHIHitachi Sales Corp. of America401 W. Artesia Blvd.Compton, Calif. 90220

HS -1MPrice $199 95/prDimensions 71/4H x 45/8W x 43/4DConfiguration 2 -wayResponse 50 Hz to 20 kHz, -15 dB re 85 dB

SPL at 1 meter at 1 wattMax power 50 watts (17 dBW)Impedance 8 ohmsDriver size 4" x 1"Mounting SurfaceFeatures Super -mini two-way speaker sys-tem; 85 -dB output and 80 -watt power capacity in atiny cabinet; optional mounting brackets for car in-stallation

INFINITYInfinity Systems, Inc.7930 Deering Ave.Canoga Park, Calif. 91304

Audlotiis 30-3648

Panasonic EAB-920

UltraSnoor M-16

JUL A-30

Sparkoinatle SK -700V

Price18Dimensions

$184Dimensions 61/2W x 51/4DConfiguration 2 -wayResponse 65 Hz to 32 kHz, +2 dBMin power 15 watts (11.75 dBW)Max power 100 watts (20 dBW)Impedance 4 ohmsDriver size 5" Infinity -Watkins dual -drive

woofer with propylene cone; EMITtweeter

Mounting Flush/SurfaceFeatures Self-contained unit

JBLJames B. Lansing Sound, Inc.8500 Balboa Blvd.Northridge, Calif. 91329

A-30Price $219.95/pr.Configuration 2 -way

30 Hz to 15 kHzResponseMax powerImpedanceDriver sizeMagnetFeatures

40 watts (16 dBW)4 ohms6" x 9" cone20 oz (cast frame)Piezoelectric tweeter

Models also availableA-15, $179 95/pr

JENSENJensen Sound Laboratories4136 North United ParkwaySchiller Park, III. 60176

1980 Edition 87

SERIES II

J-1130 Triax' IIPrice $139.95Dimensions 10 9/32H x 4 9/16W x 3 7/32DConfiguration 3 -wayResponse 65 Hz to 20 kHzMax power 50 watts (17 dBW)Impedance 4 ohmsDriver size 4" x 10"Magnet 20 oz.Mounting Flush

J-1033 Triax" IIPrice $139.95Dimensions 91/2H x 65/8W x 33/4DConfiguration 3 -wayResponse 45 Hz to 20 kHzMax power 100 watts (20 dBW)Impedance 4 ohmsDriver size 6" x 9' (woofer)Magnet 20 oz.Mounting Flush

J-1037 Coax IIPrice $99.95Dimensions 91/2H x 65/8W x 33/4DConfiguration 2 -wayResponse 45 Hz to 15 kHzMax power 90 watts (19.5 dBW)Impedance 4 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting Flush

J-1126 Coax IIPrice $79.95Dimensions 4 23/32H x 4 23/32W x 12 13/32DConfiguration 2 -wayResponse 75 Hz to 15 kHzMax power 50 watts (17 dBW)ImpedanceDriver sizeMagnetMounting

SERIES I

4 ohms41/2"

12 oz.Flush

J-1001 Series I

Price $179 95Configuration 3 -way (separate speakers)Response 35 Hz to 20 kHz (total system)Max power 35 watts (15.5 dBW)Impedance 8 ohmsDriver size 6" x 9" woofer; 6" x 31/2" midrange;

6" x 2" tweeterMagnet 20 oz. (woofer); 3 oz. (midrange); 3

oz. (tweeter)Mounting FlushFeatures Separate control module to controlmidrange driver levels

J-1174 Series I Triax"'Price $119.95Configuration 3 -way (separate tweeter and mi-

drange unit)Response 60 Hz to 20 kHzMax power 50 watts (17 dBW)Impedance 4 ohmsDriver size 51/4" woofer; 2" tweeter; 2" mi-

drangeMagnet 20 oz.Mounting Flush (woofer); surface (tweeter/

midrange)Features Separate tweeter/midrangemodule allows optimum directionality and high fre-quency

J-1069 Series I CoaxialPrice $74 95

Configuration 2 -wayResponse 40 Hz to 18 kHzMax power 45 watts (16.5 dBW)Impedance 4 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting Flush

J-1113 Series I CoaxialPrice $74 95Configuration 2 -wayResponseMax powerImpedanceDriver sizeMagnetMounting

50 Hz to 18 kHz45 watts (16.5 dBW)4 ohms5" x 7"20 oz.Flush

J-1081 Series I CoaxialPrice $67.95Configuration 2 -wayResponse 60 Hz to 18 kHzMax power 45 watts (16.5 dBW)Impedance 4 ohmsDriver size 51/4"Magnet 10 oz.Mounting Flush

J-1073 Series I Dual ConePrice $52.95Configuration Woofer/whizzer coneResponse 40 Hz to 14 kHzMax power 40 watts (16 dBW)Impedance 4 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting Flush

J-1089 Series I Dual ConePrice $39Configuration Woofer/whizzer coneResponse 60 Hz to 14 kHzMax power 40 watts (16 dBW)Impedance 4 ohmsDriver size 51/4"MagnetMounting

10 oz.Flush

J-1134 Series I Dual ConeReplacementPrice $34.95Configuration Woofer/whizzer coneResponse 70 Hz to 14 kHzMax power 15 watts (11.75 dBW)ImpedanceDriver sizeMagnetMountingFeatures

4 ohms4" x 6" (woofer)5 oz.FlushIncludes a pair of speakers only; no

grilles, wiring, hardware, or installation instructions

Models also availableJ-1124 Triax' II, $139.95; J-1041Coax II, $89.95; J-1044, $69.95; J-1065 Series I Triax', $100; J-1101Series I Triax, $100; J-1120 Ser-ies I Coax, $89.95; J-1105 Series ICoaxial, $74.95; J-1077 Series I

Coaxial, $72.95; J-1093 Series I

Coaxial, $64.95; J-1085 Series I

Dual Cone, $49.95; J-1097 SeriesI Dual Cone, $42.95; J-1117 SeriesI Dual Cone Replacement, $29.95

KA/KUSTOM ACOUSTICSKustom Acoustics, Inc.6624 W. Irving Park RoadChicago, III. 60634

Initial StatPrice $199Dimensions 171/2H x 101/2W x 9DConfiguration Two mid -woofers; dome tweeterResponse 38 Hz to 22 kHz, ±2.5 dB re 95 dB

SPL at 1 meter at 1 wattMin power 5 watts (7 dBW)Max power 80 watts (19 dBW)Impedance 4 ohmsDriver size Two 5" ferrofluid mid/woofers

(plastic laminated cone)Magnet 25 oz. (mid/woofer); 10 oz.

(tweeter)Mounting Flush/surfaceFeatures Rack -mountable; ferrofluidtweeter; tweeter level control; wire -wound heavyduty L -pad

KRACOKraco Enterprises505 E. Euclid Ave.Compton, Calif. 90224

TRI-469Price $100Dimensions 23/4H x 101/4W x 61/2DConfiguration 4 -speaker sound system combina-

tionResponse 70 Hz to 19 kHz, ± 10 dB re 87 dB

SPL at 1 meter at 1 wattMax power 25 watts (14 dBW)Impedance 8 ohmsDriver size 51/4"Magnet 20 oz.Mounting FlushFeatures Acoustic foam grille; complete withspeaker cord, mounting hardware, and installationinstructions

CX-410-20Price $59.95Dimensions 31/2H x 10W x 41/4DConfiguration 2 -way coaxialResponse 100 Hz to 19 kHz, ± 10 dB re 83 dB

SPL at 1 meter at 1 wattMax power 20 watts (13 dBW)Impedance 8 ohmsDriver size 4" x 10"Magnet 20 oz.Mounting FlushFeatures Air -suspension speaker with 2 -inchtweeters; acoustic foam grille for tone quality; com-plete with speaker cord, mounting hardware, andinstallation instructions

Models also availableVCS -2000, $108; TRI-3-410,$89.95

LAFAYETTELafayette Electronics111 Jericho TurnpikeSyosset, N.Y. 11791

Triple PlayPrice $49.99/pr.Dimensions 6H x 9WConfiguration 3 -wayResponse 50 Hz to 20 kHzMax power 30 watts (14.75 dBW)Impedance 8 ohmsMagnet 20 oz.Mounting FlushFeatures Includes high -impact, heat -resist-ant grilles


LOVE SOUNDLove Sound, Inc.2065 Martin Ave. #113Santa Clara, Calif. 95050

LS -95Price $170Dimensions 83/4H x 71/4W x 3DConfiguration 2 -wayResponse 40 Hz to 18 kHz, +2 dBMin power 10 watts (10 dBW)Max power 50 watts (17 dBW)Impedance 4 ohmsDriver size 61/2" woofer; 1" dome tweeterMagnet 13 oz.Mounting Flush or SurfaceFeatures Die-cast aluminum mounting baf-fle, coax mounted tweeter can be removed forseparate mounting, with 12 dB/octave crossovernetwork

LS -40Price $135Dimensions 3H x 6W x 103/4DConfiguration 2 -wayResponse 45 Hz to 20 kHz, +2 dBMin power 10 watts (10 dBW)Max power 30 watts (14.75 dBW) continuousImpedance 4 ohmsDriver size 51/4" woofer; 2" tweeterMagnet 13 oz.Mounting Flush/surfaceFeatures Same as Model LS -80

Models also availableS-80,$160

MARANTZMarantz Co., Inc.20525 Nordhoff St.Chatsworth, Calif. 91311

SS -5000Price $300/pr.Dimensions 7 9/32H x 11 5/32W x 7 9/32D

(less mounting bracket)Configuration 2 -wayResponse 30 Hz to 20 kHz (DIN) re 81 dB SPL

at 1 meter at 1 wattMin power 15 watts (11.75 dBW)Max power 250 watts (24 dBW)Impedance 4 ohmsDriver size 61/2" x 1"Magnet 13 oz.Mounting Surface

SS -569Price $130Dimensions 93/8H x 63/8W x 4DConfiguration 5 -wayResponse 40 Hz to 20 kHzMax power 30 wattsImpedance 8 ohmsDriver size 6" x 9"Magnet 20 ozMounting Flush

SS -3469Price $110Dimensions 93/8H x 63/8W x 35/8DConfiguration 4 -wayResponse 40 Hz to 18 kHzMax power 30 watts (14.75 dBW)Impedance 8 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting Flush

SS -3357Price $100/pr.Dimensions 7'/4H x 5W x 3DConfiguration 3 -wayResponseMin powerMax powerImpedanceDriver size

90 dB SPL at 1 meter at 1 watt10 watts (10 dBW)20 watts (13 dBW)4 ohms5" x 7"

Magnet 10 oz.Mounting FlushFeatures Front -insertion design with snap -ongrille, strontium -type magnet equivalent to 20 ozceramic type

SS -825Price $90/prDimensions 6'/4W x 27/61)Configuration 3 -wayResponse 50 Hz to 20 kHzMax powerImpedanceDriver sizeMagnetMounting

25 watts (14 dBW)8 ohms61/4"

20 oz.

Flush

SS -269Price $70/pr.Dimensions 93/aH x 63/8W x 35/a DConfiguration 2 -wayResponse 40 Hz to 15 kHzMax power 30 watts (14 75 dBW)Impedance 4 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting Flush

SS -140Price $40/prDimensions 4W x 13/8DConfiguration Full -rangeResponse 60 Hz to 14 kHzMax power 10 watts (10 dBW)Impedance 4 ohmsDriver size 4"Magnet 10 ozMounting Flush

Models also availableSS -5100, $250/pr SS -3410, $80,SS -469, $110/pr , SS -3269, $80/pr, SS -725, $70/pr, , SS -169,$160/pr

MATRECSMatrecs Industries805 Woodman Ave.Rockford, III. 61101

MA-0410-20CPPrice $96 04Configuration 2 -wayResponse 70 Hz to 20 kHzMax power 25 watts (14 dBW)Impedance 4 to 8 ohmsDriver size 4" x 10"Magnet 20 ozMounting FlushFeatures Includes 2 speakers, grilles, wiring,and hardware, ferrofluid in voice -coil gap

MA -0410-020PPrice $63 70Configuration Dual coneResponse 70 Hz to 16 kHzMax power 25 watts (14 dBW)Impedance 4 to 8 ohmsDriver size 4" x 10"Magnet 20 oz.Mounting Flush

Features Also includes 2 speakers, grilles,wiring, and hardware; ferrofluid in voice -coil gap

MA -0069-020TPrice $43 88Configuration 3 -wayResponse 40 Hz to 20 kHzMax power 30 watts (14.75 dBW)Impedance 4 to 8 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting FlushFeatures Also available as MA-0069-20TP,which includes 2 speakers, grilles, wiring,and hardware; ferrofluid in voice -coil gap

MA -0525-020CPrice $36 56Configuration 2 -wayResponse 50 Hz to 20 kHzMax power 25 watts (14 dBW)Impedance 4 to 8 ohmsDriver size 51/4" (round)Magnet 20 oz.Mounting FlushFeatures Also available as MA-0525-20CP,which includes 2 speakers, grilles, wiring, andhardware, ferrofluid in voice -coil gap

MA -0069-0020Price $23 40Configuration Dual coneRespcnse 40 Hz to 16 kHzMax power 25 watts (14 dBW)Impedance 4 to 8 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting FlushFeatures Also available as MA0069-020P,which includes 2 speakers, grilles, wiring, andhardware; ferrofluid in voice -coil gap

MA -0069-0010Price $20 90Configuration Dual coneResponse 50 Hz to 16 kHzMax power 20 watts (13 dBW)Impedance 4 to 8 ohmsDriver size 6" x 9"Magnet 10 oz.Mounting FlushFeatures Also available as MA0069-010P,which includes 2 speakers, grilles, wiring, andhardware; ferrofluid in voice -coil gap

MA -0525-0005Price $16 80Configuration Dual coneResponse 60 Hz to 15 kHzMax power 16 watts (12 dBW)Impedance 4 to 8 ohmsDriver size 51/4" (round)Magnet 5.5 oz.Mounting FlushFeatures Also available as MA -0525-005P,which includes 2 speakers, grilles, wiring, andhardware; ferrofluid in voice -coil gap

Models also availableMA-0410-20TP, $109.66; MA-0069-10CP, $7521; MA -0069-025C, $4427; MA -0069-020C,$36.63; MA-0069-10DV, $23 79;MA -0525-0020, $22.30, MA -0410-0010, $20 38; MA -0057-0010,$20 09; MA -0525-0010, $19.18

MESAMesa Electronics Sales, Ltd.2940 Malmo DriveArlington Heights, III. 60005

1980 Edition89

MuBLANK

CASSETTE: ,.. ,

...'..-c Nus-isuso C

-171..01C-90..76 Pro nor III :9 Pronto III

TAPESTAPES

5/ , .-

90

C-60C-90

THE ONE -STOPMUSIC SHOP

AT WHOLESALE PRICES

MINIMUPETAM ORDER12 S-100%GUARANTEED

13,1 REEL TO REEL, L.' 79 Amp.. Grano Main$269 150011 $61;$234 Mann I/0 35-N 180011 CALL$210 OWN 11051 35-908 190011 CALL1299 Won LIO 35-180 3800 11

.1010, II C-90 12 99 nOn) CALLcoo UDC -60 CALL sows 2121800n $435von UD C-90 CALL scow, 20: 10000 15 19owl 000120 CALL TO5 S-1800 ON n $4 32Won UDXI 1 of 11C-60 CALL VIDEO TAPESmooNVO I or n C-90 CALLScoteln Wm Nom Doors qe BETA FORMAT

c 93316 $4993 TEM L5043 i2 noon $1315AO IWO I CAM 3251 Sony 1-750(3 neon $1595111 Nino 9 Sony 1-500 12 Howl $1395ur III C.00 $3 29 Scotch 1.50012 Mono $13 50

on: Low Alcor C-90 D 84 15 MoonSony No.F.011y C-90 $242 N Amair

00 noun$13 95

95or L.5001212- 512Son, ftrnclroont C.90 $3 58l04{ CI C-60 N so VHS FORMAT

TOR DC -00 $1 69 Scan. VX-250 14 noun $1795TM 0 C.120 12 10 JVC T-17014 noon DI 75TN I) CAN 1299 TOR T.12014 NOW $1950MK AD C-60074)105

ADC -90 12 52 Re .A VR.250 (414.1 $15 95NW AO C-120 $345 RCA V5.12512 Moue $14 95TOo SA C-60 12 22 Porno: 0,I-120 (4 noon 118 95TN SA 090 53 19 PV1410.14 NY1-60 (2 noun 514 95

Call or write for super low prices on Maxell tapes.

CARTRIDGESaucimp-techrica

A1.20SS $129 SO91-15.55 19990 11111111111WAT -14 SA $495

AT -12 SA 34 10 915 OPE 19 589 9051.10 512 00 915100E in SU 95

STRIE1p8 18956E SA 97INS 172 50 095(0 121 75MINES 15500 NINO PI 00651(61 142 SO 514E513 50NON 124 90 ''''°U 39 90500( 512 60 0 PICKERING

ERADIFIE 059 3000 549 9520001 559 90 591112001 139 9520001 $31 50 N:15/750( 532 502000(711 $19 50 0915425( $25 7/NOM $29 90 55115/403( 522 45

CAR STEREO JENSENSANYO 21001 SO 20 0:

3 noVarros 2 NNW $04 95

CASSETTE IN -DASH CANS 641 20 OrMinn 159 NorW/RADIO

11-401C-9091 400 20 or

111,59 Tnosal $59 len01-4898-418

139.56 C-9140 Ma 20 or121.50 Coaxal 139 9115.MOON

FT -0495lag C-9999 594 200t

Vann $51 991111.644 $106 95 C-9994 4002008

Coon, $39 98 or1114902 $10 5. C-9852 54/ 20 orCASSETTE UNDERDASH Coano $38 995.

11-1400 0)9.50 C-9857 4 10 01FT -1405 1114 95 Conn $32 96 or

PIONEERCASSETTE -IN -DASH UNDERDASH

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5P-4000 s. iP721 174 955P. 5005 VZ 9; in.200 .1114 Stan $71 5050-8000 30 TO.900 rerSoporionn 11291550-11005 $151 30 POWER AMPS1011-9000 519995 AD-360(70.ms) 5142900E2000 0199 95 GM -I20 1120 riatIn $12515%62002 DO SO CD. / (7 bein granui 991 112915KS .3000 1242 90 GM -12112 *4nil $32 1501-5000 $284 90 65-40(40 .165) 153 90

CASSETTE UNDERDASH AD -312 (12 Nilo 136 SCn15272 551 90 92-320 (20 0.051 $4990OP,292 92 MI XENON 193 75OP -373 $82 50 SPEAKERS50.250 or/FIA SON $103 15 IS -M2 Toone: irdn A6puS1 Level10.500 OSoNnonn 5134 95 (20 nest 129 95 o/(P.M $92 95 11165 676 Coaxal [Nor Monti5P.158G sno 95 (20 ininn5P5600 $o, 95 TS -694 6s9 Conn 20 o

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W/RADIO 110warru 0995 o/iP.6001 $99 95 11 56 2- Wo: Sone. Mono1P-7000 5104 40 (20 9906) 169 95 0/10-7004 5 6 5142 90 15.1(92- Was Surbte Mounts10-9004 5 6 1151 30 1411 wets) $139 95 o,

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D15C1115/40 ACCESSORIES (Thf....-,. HEADPHONES Is,. 415, 4

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RECORDSPop. Rock, Jazz, R&BAll 7.98 List $4.99 0All 8.98 List $5.49All 9.98 List . ..... $5.99

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WE STOCK THE COMPLETE SCHWANN CATALOG.

HOW TO ORDER. For shipment within 4$ hours. send moneyorder St certified check Two nooks delay on porton/i) checksTime mid 13.50 per order for shwpins 8 handling $5.50 fororders outside U.S.). N.Y.S. resident' add tax. No C 0.0.'sAN merchandise 1111% gewentand, brand now II factory huh.

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ORDER TOLL FREE (800) 221-8180CALL OR WRITE FOR FREE 120 PAGE CATALOG

Mini -Mesa 50Price $300/pr.Dimensions 91/21-I x 61/2W x 41/4DConfiguration 3 -wayResponse 50 Hz to 25 kHzMin power 10 watts (10 dBW)Max power 80 watts (19 dBW)Impedance 4 to 8 ohmsDriver size 5" foam -suspension woofer; 3" mi-

drange; tweeterMounting Self-contained; designed for horre

use as well

Mini -Mesa 30Price $238/pr.Dimensions 71/4H x 45/8W x 41/4DConfiguration 2 -wayResponse 60 Hz to 25 kHzMin power 10 watts (10 dBW)Max power 50 watts (17 dBW)Impedance 4 to 8 ohmsDriver size 4" woofer; 21/4" hard -dome tweeter

with 1" voice coilFeatures Self-contained

MB -5Price $54.95 (kit)Dimensions 51/4 roundConfigurat,on SubwooferResponse 42 Hz to 200 HzMin power 15 watts (11.75 dBW) (nominal)Impedance 4 to 8 ohmsDriver size 51/4"Magnet 40 oz.Mounting FlushFeatures Mobile bass booster; includescrossover network and two 20' cables

Models also availableMini -Mesa 15, $129.95/pr.; MB -6,$69.95 (kit)

MITSUBISHIMitsubishi Audio SystemsMelco Sales, Inc.3030 E. Victoria St.Compton, Calif. 90221

SX-30SAPrice $149.95Configuration 2 -wayResponse 80 Hz to 20 kHz, +2 dB re 86 dB

at 1 meter at 1 wattMax power 50 wattsImpedance 4 ohmsDriver size 4" x 4"Magnet 65 oz.Mounting SurfaceFeatures Tweeter attenuator control; alumi-num die-casting baffle board enclosure

SG -690APrice $119.95Configuration 4 -wayResponse 65 Hz to 18 kHz, +3 dB re 91 dB

SPL at 1 meter at 1 wattMax power 20 wattsImpedance 4 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting Flush

SG-20CAPrice $99.95Configuration 2 -wayResponse 60 Hz to

SPL at 1Max power 20 wattsImpedance 4 ohmsDriver size 8" x 8"

90

17 kHz, ±3 dB re 91 dBmeter at 1 watt(13 dBW)

MagnetMountingFeatures

6.5 oz.FlushThree -position tweeter level

SG-16CAPrice $69.95Configuration 2 -wayResponse 60 Hz to 20 kHz, ±3 dBMax power 20 watts (13 dBW)Impedance 4 ohmsDriver size 61/4" x 61/4"Magnet 6.5 oz.Mounting Flush

SG-40WAPrice $59.95/pr.Configuration 1 -way dual coneResponse 50 Hz to 20 kHz, ±3 dBMax power 20 watts (13 dBW)Impedance 4 ohmsDriver size 4" x 10"Magnet 10 oz.Mounting Flush

SG-16EAPrice $49.95Dimensions 61/4H x 61/4W x 1DConfiguration Single coneResponse 70 Hz to 12 kHz, ±3 dB re 86 dB

SPL at 1 meter at 1 wattMax power 20 watts (13 dBW)Impedance 4 ohmsDriver size 61/4" x 61/4"Magnet 3.6 oz.Mounting Flush

SG-10WAPrice $39.95/pr.Configuration 1 -way dual coneResponse 100 Hz to 17 kHz, ±3 dBMax power 20 watts (13 dBW)Impedance 4 ohmsDriver size 4"Magnet 5.3 oz.Mounting Flush

Models also availableSX-10BA, $129.95; SG-69TA,$99.95; SG-69CA, $79.95/pr.; SG-40CA, $69.95; SG-69WA, $49.95/pr.; SG-13WA, $49.95; SB-2SA,$39.95

MOTOROLAMotorola, Inc.Automotive Products Div.1299 E. Algonquin Rd.Schaumburg, III. 60196

M41 -20TPrice $134.95Dimensions 10H x 4W x 35/xDConfiguration 3 -wayResponse 55 Hz to 16 kHzMax power 25 watts (14 dBW)Impedance 6 ohmsDriver size 4' x 10"Magnet 20 oz.Mounting FlushFeatures 1" voice coil; one-piece ceramicmagnet

M69 -20TPrice $139.95/pr.

D69 -20TPrice $119.95/pr.Dimensions 9H x 6W x 31/6DConfiguration 3 -wayResponse 45 Hz to 18 kHz



Max power 25 watts (14 dBW)Impedance 6 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting FlushFeatures 2.5" midrange; 2" tweeters; one-piece ceramic magnet

M69 -20CPrice $109.95/pr.

M68 -15CPrice $99 95/pr.Dimensions 8H x 6W x 3'/2DConfiguration 2 -wayResponse 55 Hz to 15 kHzMax power 25 watts (14 dBW)Impedance 6 ohmsDriver size 6" x 8"Magnet 13 oz.Mounting FlushFeatures 1" voice coil; one-piece ceramicmagnet

D69 -20CPrice $89.95/pr.Dimensions 9H x 6W x 37/eDConfiguration 2 -wayResponse 45 Hz to 15 kHzMax power 25 watts (14 dBW)Impedance 6 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting FlushFeatures 1" voice coil 2" tweeters;piece ceramic magnet

D5 -20CPrice $77.95/pr.Dimensions 514sH x 21/2DConfiguration 2 -wayResponseMax powerImpedanceDriver sizeMagnetMountingFeaturestweeters

one -

65 Hz to 14 kHz25 watts (14 dBW)6 ohms51/4"

20 oz.FlushCeramic magnet, 1" voice coil, 2"

M69 -10WPrice $40 95/pr

Models also availableM68 -15T, $129.95/pr. M41 -20C,$104.95/pr.; M5 -20C, $94.95/pr.M5 -10C, $89.95/pr.; M4 -10C,$74.95/pr.; D5 -10C, $66.95/pr.;D3 -5W, $25.95; M4 -8C, $49.95/pr.

OROVOXOrovox Sound11545 Tuxford St.Sun Valley, Calif. 91352

M-124Price $195.80/pr.Configuration 3 -wayResponse 25 Hz to 22 kHzMax power 85 watts (19.25 dBW)Impedance 8 ohmsDriver size 6" x 9"Magnet 30 oz.Mounting Flush/surfaceFeatures Independent combined piezoelec-tric tweeter/midrange; 11/2" aluminum voice coil

Continued on page 102

The LegendContinues.

The New Dynactp A150& A250 priced from $150.

Dynaco helped createstereo hi-fi 25 years ago.We built a reputation basedon rigorous yet simple de-signs that produced moresound than the industryhad ever seen.

Now we've come backto do it again. With twonew speakers that are farand away the best we'veever built. Each of thesesystems continues theDynaco legend of simplic-ity and performance at a

modest cost. Each in itsown way will make youpart of a listening experi-ence that for 25 years hasmeant only Dynaco.

To sample that ex-perience, take your favor-ite record album to yourDynaco dealer. Lean backand listen. You'll hear thatDynaco sounds better thanever. And the legend willcontinue. We have manynew and exciting productscoming your way.

dUil1 a COWe build them like we used to.

110 Shawmut Road Canton, Mass. 02021 (617) 828-7858

1980 Edition 91 CIFCLE 34 ON READER -SERVICE CARD

0= It sounds41)(4 like music.wr. Interface:C Series II

N is the fulfillment ofour six -year asso-

ciation with optimallyvented speakers basedon the theories ofA.N.Thiele- speakerdesigns first introducedby Electro-Voice it 1973The Interface:C offersyou a unique combinationof high efficiency andhigh power capacity- theonly way to accuratelyreproduce the 120+ dBpeak sound pressurelevels found in sometypes of live music.

The SuperDoment:tweeter, an E -V exclusive,and the VMRTM ventedmidrange driver. the frstto apply optimally venteddesign to mid frequen-cies, ensure your musicis reproduced withoutthe coloration normallyfound in other high -efficiency drivers. Anhonest 30 Hz low endtotally eliminates theneed for expensive sub -woofer assemblies.

When you spend $1,000for a speaker systemget your money's worth.Audition the Interface:CSeries II at your nearestInterface dealer. If youwant a speaker thatsounds like music. thelnterface:C Series II isthe one you'll buy.

Ey Electro:Voicel°gUitlil company

600 Cecil Street, Buchanan, Michigan 49107

GlossaryA/B test A listening test in which twosimilar audio devices (or program sources)are compared by rapidly switching be-tween them while the rest of the system rsunchanged, except for relative volume ad-justment if needed. A/B tests are particu-larly germane in evaluating loudspeakers,although they also can reveal audible dif-ferences in any sound equipment.

baffle Panel on which a loudspeaker ismounted.

crossover A frequency at which other fre-quencies below and above it are sepa-rated. A crossover or dividing network, forinstance, separates the highs and lows in awoofer/tweeter speaker system.

directivity, speaker A tendency of somespeakers to "beam" or reproduce lessclearly and/or strongly off axis as fre-quency rises. Multidirectional or "omnidi-rectional" speakers represent a design ef-fort to avoid beaming and to radiate allfrequencies uniformly.

doubling A speaker's tendency to distortby producing harmonics of bass tones.

driver A loudspeaker minus its enclosureand crossover components; any movirgparts in a speaker system.

efficiency A ratio, often expressed as apercentage, of output power to inputpower; often used to estimate the powerneeded to drive a loudspeaker, and, in ef-fect, the same as the "sensitivity" of a loud-speaker.

feedback A return of an output signal tothe input of the system. In disc playback, asimilar form of feedback occurs when loud-speaker energy is sensed by the pickupand amplified through the system.

frequency response The measure ofability to pass signals of different frequencywithout affecting their relative strengths.This is shown as a graph or "curve" whichassumes input signals equally strong at allfrequencies, and plots their output inten-sities against a decibel scale. The ideal"curve" is a straight line (perfectly "flat"response). Frequency response generallyis stated with specific decibel limits indicat-ing the maximum deviations from flat re-sponse. For instance, 30 Hz to 18 kHz, -t- 2

dB means that the audio device or systemwill not change the relative intensities ofany frequencies within that range by morethan 2 dB above or 2 dB below the idealzero -dB (volume unchanged) point.

impedance Essentially, opposition to theflow of alternating current and consistingof "pure resistance" combined with induc-tive or capacitive reactances. Impedancevalues are specified for some components(such as microphones or loudspeakers)when it is important for their proper func-tioning that their interconnection with an-other component provide some specified

92

termination or load impedance; expressedin ohms.

loudness Generally synonymous withvolume, which is the intensity of perceivedsound. "Loudness compensation" refersto equalization applied to a signal accord-ing to its volume in order to compensate forthe ear's tendency to change frequency re-sponse at different listening levels. Loud-ness compensation typically boosts thebass, and sometimes the treble to a lesserdegree.

phantom A signal carried by or repro-duced through two sources in such a man-ner as to "appear" from another source. Intwo and four -channel stereo reproduction,sounds which "appear" to come from be-tween the loudspeakers are said to bephantomed.

phase The characteristic of a wave thatrelates it to a time or to another wave withrespect to time.

power output The signal produced by anamplifier into a given load when fed with agiven input signal. Power, expressed inwatts, should be stated with reference toseveral qualifying factors-the impedanceof the load; the frequency at which (or therange of frequencies over which) thepower is derived; the amount of distortionpresent for a given power output level;whether the power stated is for one chan-nel or the sum of all channels. The most ac-curate and rigorously derived power figureis for the average sine -wave power (alsotermed "continuous" or "RMS" power).

speaker enclosure A structure or cabi-net specifically designed to house a loud-speaker in order to load its output and gen-erally aid in its response. A bass reflexsystem uses a critically dimensioned port(auxiliary opening) to help smooth and ex-tend the bass response. An infinite baffletotally encloses the speaker to suppress itsrear wave, thereby permitting the speakerto respond down to its inherent resonantfrequency. An acoustic or air -suspensionsystem is relatively smaller than the previ-ous types and uses a very loosely sus-pended woofer whose resonance is raisedto the audible range and whose diaphragmmotion is controlled by air trapped withinthe enclosure. A folded horn adds a con-stantly expanding horn structure to thefront and/or rear of a diaphragm to coupleits output, via "acoustic transformer" ac-tion to the room. A transmission -line sys-tem (actually a variation of the former lab-yrinth system) loads a diaphragm with acritically dimensioned duct that smoothsthe response and helps extend the low -fre-quency range.

wavelength The distance between thebeginning and the end of a complete cycleof any spatial periodic phenomenon. Inacoustics it is the distance occupied by onecycle of a repetitive sound travelingthrough the air at a velocity of about 1,100feet per second: A 1.1 kHz tone has a wave-length of one foot.

woofer Loudspeaker designed for lowfrequencies.

High Fidelity's Buying Guide to Speaker SystemsCIRCLE 12 ON READER -SERVICE CARD

Learn the pros and cons of 8 popular speaker types

by Edward J. Foster

OneDesign Superior?If one loudspeaker design were superior to all others

in all respects, it would stand to reason that, after allthese years, it would be the only surviving technology.YOU might call that statement the first corollary of theDarwinian Law of Natural Selection as applied to highfidelity. Yet many types of loudspeakers exist today. Sowe'll state flatly that no one design is superior to allothers in ari circumstances. Different technologieshave different strong points (and different weak-nesses); by knowing what to expect from each of them,you'll be better able to decide which one is best for youin your listening environment.

The basic problem of gettmg the sound of a 5 -foot bass drum or a 16 -footorgan pipe out of an 8 -inch, 10 -inch, or even 12 -inch woofer has capturedthe imagination and certainly taxed the ingenuity of loudspeaker design-ers from the inception of the high-fidelity age. Whack a bass drum andlots of air moves. To create that same sound in your living room thespeaker must be able to move an equivalent amount of air. Consideringthe difference in the cross-sectional area between a bass drum and aspeaker cone, the cone must move a lot farther than the drum skin in or-der to yield the same sound.

There are two opposing views on this: the "bigger -is -better" schooland the "do -it -right -and -you -can -get -the -same -response -out -of -a -small -

cone" school. The nut of that disagreement can be cracked. As far as fre-quency response at relatively low levels goes, you can get bass range outof a small cone equivalent to that of a large one if you do it right. But-and it's an important "but"-you can't expect the small cone to produce

1980 Edition 88

admismiszdiRearward radiation of sound

can either be absorbed, as in anacoustic suspension system, or

put to work, as in a vented system(shown). Vented systems hold up

to a somewhat lower frequencythan do sealed systems, but roll

off more quickly below thecutoff frequency.

the same maximum sound level as a larger cone without an increase indistortion. Here and elsewhere in this article we're discussing what can bedone, not necessarily what is done in any given design. So you can haveextended bass frequency response from a small speaker but it won't playat concert -hall levels; that requires a speaker that can physically displacethe requisite amount of air.

Conventional cone loudspeakers-and electrostatics too-displace theair by causing a diaphragm (cone) to move back and forth. Of course, asthe diaphragm moves forward, pushing the air into the room, it is suckingair into its rear section. When the cone moves backwards, the opposite istrue. If the air from the front can blow around to the back, all the conewill achieve is a sloshing action-about as effective in re-creating sound aswaving a hand in a breeze.

Sound takes time to move around the cone from back to front. (Thevelocity of sound in air is roughly 1,100 feet per second.) If the cone vi-brates rapidly enough (in response to a high -pitch tone), it reverses its di-rection before the sound wave from the back can reach the front and can-cel the front wave. But at low frequencies (in the bass) soundwavelengths are very long, and the back wave effectively cancels thefront wave if the speaker is left out in the open. Loudspeaker design-atleast as far as bass reproduction goes-has concentrated on what to dowith that back radiation.

One thing you can do with back radiation is to ignore it. If the speaker ismounted on an infinitely long and wide panel, the sound will never crossfrom the rear plane to the front. A more practical alternative is to trapthe back -radiated sound in a big, well -padded box to absorb it. This is an"infinite baffle" design.

Consider also that the cone of a loudspeaker has some "mass," which isheld in place by a "surround" and "spider" that properly locate it andprovide some restoring force so that it returns to its resting position afterthe signal has ceased. Thus the surround and spider serve as a "spring"-aclassic case of mechanical resonance. The cone moves most easily at its"resonance frequency" and is likely to produce more sound at that fre-quency than at any other. At frequencies well above resonance, the conewill respond more uniformly and do what it's "told" by the signal. Belowthe resonance frequency, the cone responds less uniformly and bass out-put drops off.

As soon as the air is trapped behind the speaker, it acts as a sort ofspring. When the cone moves inward, the air is compressed and tries topush the cone out. When the cone moves forward, the partial vacuumcreated in the cabinet tends to suck the cone back in. In the sealed box theresonance frequency of the speaker is higher than it is in free air. Bassresponse, therefore, starts to roll off at a higher frequency than it wouldhave if the speaker had been mounted on an infinitely broad panel. Thelarger the box, the less internal air pressure will build up, and the less theresonance frequency will be affected.

Villchur, who founded Acoustic Research and set off a revolution inloudspeaker design, took a different approach to the problem: If the"spring effect" of the entrapped air can't be avoided, then put it to work.If the surround and spider "springs" are made very weak, the woofer thatresults has a natural resonance frequency that is very low. Then use theentrapped air to "suspend" the cone and provide a large part of the restor-ing force. Thus the term "acoustic suspension."

This technique, which swept and dominated the high-fidelity loud-speaker market for a decade, has several nifty advantages. The "box" isrelatively small-it has to be to insure enough pressure build-up inside toact as a spring. Yet the system resonance frequency can be quite low forgood bass -frequency response. And an air spring is inherently more

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The basic parameters

size, efficiency, and

response-are tradedoff to get the

desired compromise.

"linear" than a mechanical one, so the restoring force acting on the coneis more precise and distortion is reduced. With a linear spring, the conecan move back and forth through a greater distance, moving more air fora given distortion level; as a consequence, the maximum bass power isaugmented.

That does sound like getting something for nothing-smaller size,equivalent or better bass -frequency response, the same (or lower) distor-tion at greater (or equal) maximum power. The laws of physics, however,exact a price. In the case of the acoustic -suspension system it is efficiency,which is lower than that of an infinite baffle.

The thought of losing half the acoustic output power of a loudspeaker(the rear -emanating sound) has continually challenged designers: Howput it to work? The solution: Cut a hole in the box and let it out. Donecorrectly, this has beneficial effects.

As soon as a hole is cut into the box, it becomes a "Helmholtz Resona-tor." The most familiar Helmholtz Resonator is the coke bottle; blowacross the top, and it makes a tone. Resonance is created by the mass andcompliance of the air in the neck and in the bottle. Similarly, the loud-speaker baffle can be "tuned" to augment bass response at frequencies be-low that at which an equivalent acoustic -suspension system might rolloff. "Tuning" is achieved by cutting the right -sized hole in the right -sizedbox. Adding a "duct" or tube to the hole can change the box -resonancefrequency.

Early designs of this type, called "bass -reflex" or Helmholtz -Resonatorsystems, were not highly regarded. The problem was not with the conceptbut with its implementation. No one really knew how to design the sys-tem mathematically. It was all cut and try; some systems worked well,others "boomed" like crazy. To get "flat" bass response from a vented sys-tem requires a careful juggling of parameters. In addition to tuning thebox, the Q (or damping) must be properly matched to the characteristicsof the driver-the mass of the cone, the compliance of the suspension andthe strength of its "motor"; i.e., the magnetic field strength and thelength of the wire in the voice coil.

An Australian engineer (A. N. Thiele) saw a parallel between loud-speaker -system design and electrical -filter theory and formulated equa-tions and tables to predict the system's performance from the character-istics of the box and the driver. For example, start off with the bassresponse, efficiency, and box size, and the math determines what drivercharacteristics you need (though they may not be possible to achieve).The basic parameters-size, efficiency, and response-are traded off to getthe desired compromise. You can have good response in a small enclosureif you relinquish efficiency; or higher efficiency in that enclosure if yougive up extended bass response and/or power -handling ability.

Thiele's equations apply to virtually all "direct -radiator" systems-those in which the cone vibrates the air of the room directly-includingboth vented systems and acoustic -suspension systems. Expanding on theoriginal work, other engineers have designed systems using passive radi-ators or drone cones. These are merely speakerlike diaphragms that aredriven by the air pressure within the cabinet, thus serving as vents.

The passive radiator gives the designer a "handle" on the air's mass inthe vent, since it can be controlled by the cone's mass. He can use it toreduce the velocity of air through the vent and avoid the "whistle" thatsometimes occurs at high volume when a small -area, high -velocity vent isused. Thiele's equations also apply to "high -order" alignments where anexternal electrical equalizer is used as part of the filter network. Such sys-tems offer even more propitious tradeoffs vis-à-vis efficiency, size, and re-sponse, albeit with the added complexity of the electronic equalizer.

Now, certainly, we have gotten something for nothing. Not quite. Al -

96High Fidelity's Buying Guide to Speaker Systems

When all the drivers in a speaker system are mountedon the same plane (top), soundwaves from the woofer orig-inate at a point more distant from the listener than dothose from the midrange and tweeter, and thus take longerto reach the listener. This can cause phase -coherenceproblems, which so-called "time -aligned" systems (bot-tom), which place the points of origination on the sameplane are designed to solve.

though a vented system may hold up to a somewhat lower frequencythan a sealed system of the same size and/or offer greater efficiency, itrolls off much more rapidly below the cutoff frequency. (You didn't thinkyou could let out that back wave and never have it cancel the front wave,did you?) And, since there is no "entrapped -air spring" to restore the coneat very low frequencies, the cone can be deflected substantially by in-frasonic signals (for example, from a warped record). If the deflections be-come excessive, distortion may ensue; a good infrasonic filter is thereforedesirable. High -order systems-those with an external equalizer-usuallyhave one built in. Some listeners feel that the steeper bass rolloff belowresonance and the attendant phase shift it creates causes vented systemsto sound less tight than sealed ones, and that the higher the order, themore severe this effect is.

Whether sealed or vented, direct -radiator loudspeakers are basicallyinefficient in converting electrical power into acoustical output. A hornloudspeaker is much more efficient, despite the fact that almost invar-iably only the front driver radiation is used. (The back wave is simplytrapped and dissipated.)

The "grand old horn" is, of course, the Klipschorn, whose design is oneof the constants of high fidelity. Essentially, a horn is an acoustical trans-former that matches the small -area cone to the large volume of air sur-rounding the speaker. Every horn has a cutoff frequency below which it isineffective. For a horn to work at low frequencies it must be very long andhave a large "mouth area." In the original Klipsch design, the horn was"folded," and the system required corner placement so that the walls ofthe room could be used as extenders.

Wide-iange electrostatic panels, which are open on both sides, inten-tionally radiate sound to the front and rear. The front and rear waves,which are out of phase do not cancel each other out until they reach afairly low frequency (long wavelength), because of their physical size,panels act as self -baffles. Nonetheless, cancellation does increase at lowfrequencies, and electronic equalization is normally used to help the bassresponse from diminishing. Sometimes, a conventional cone subwoofer isused to augment the electrostatic panels in the lowest octaves.

If the driver that supplied the bass sounds were equally adept at repro-ducing the midrange and treble, life would be simple. But such is not the

1980 Edition 97

Panel speaker systems (right)tend to be phase coherentsince all radiating surfacesare in the same plane, and areless influenced by room acous-tics than are cabinet loud-speakers (left).

case. To produce adequate bass response and power, the woofer must belarge and massive. These attributes become detriments when trying to re-produce tones of higher pitch. The woofer cone is too heavy to respond tohigh -frequency signals, and, when attempting to do so, "breaks up" andvibrates in sections. Frequency response becomes notably irregular. Also,when the wavelength of the signal approaches the diameter of the cone,the speaker tends to beam or focus the sound directly along its axis,rather than radiate it uniformly over a wide angle.

These problems can be solved by routing higher -frequency signals to asmaller driver; hence we have so-called two-way, three-way, and four-way systems with crossover networks-really bandpass filters-to directthe sound to the proper driver. But in each crossover region, two of thedrivers are radiating; due to phase shifts in the crossover network and tothe physical separation of the drivers, the two sounds may not be in phaseat all frequencies and at all listening angles. So the waves may interfereand the response through the crossover region may be irregular. Andsince the small high -frequency drivers may not be able to handle thesame power as the woofer, some designers use two or more drivers in thesame high -frequency range, increasing the possibility of sound -wave in-terference.

Even ignoring possible problems in the crossover region and assumingonly a single driver is used in each frequency range, there are theoreticallimitations on the accuracy with which the system can duplicate a com-plex wave shape. The sound from the deep woofer cone comes from apoint within the cabinet; that from the relatively shallow midrange andtweeter seems to come from a point closer to the mounting surface. Be-cause the sound from the woofer must travel farther to reach the room, itarrives "late." "Time -aligned" systems, in which the woofer is placed in amore forward location than the midrange and tweeter to get its effectivepoint of radiation in line with that of the smaller drivers, are designed tosolve this problem.

When a sound wave reaches a sharp edge, it tends to "diffract" aroundit much the same way that light diffracts when passing through a tinyslit. Diffraction is important mainly in the high -frequency region wherethe wavelength is short, but when it occurs it is mathematically equiva-lent to having a second (phantom) sound source at the edge of the dis-continuity. The sound wave from this phantom interferes with the mainwave and again causes an irregular frequency response, one that varieswith the angle between the listener and the speaker. Thus we see speakerswith acoustic "blankets" that absorb the sound that is propagated alongthe front of the cabinet and prevents it from reaching the edge. We seemany cabinet designs in which sharp discontinuities are avoided entirely.

Mid- and high -frequency drivers come in many shapes and forms:cones, domes, horns, and electrostatic panels-even novel Heil driversthat squeeze the air from corrugated folds in the diaphragm. Each has itsstaunch proponents (and opponents). None are perfect; none are entirelybad. Which is "best" depends on your point of view. Which faults are you


Wharfedale. First and everlasting.

The Wharfedale Es are he newestspeakers in an unequalled tradition ofexcellence that goes back tc the earlydays of music reproduction.

In those days, our speakers-likethe unique sand -filled designs of Gil-bert Briggs-were received with wideacclaim despite the limited technicalresources of that era. Today's Wharfe-dale E's benefit from our space-agetechnology, and hold a special posi-tion of leadership in acousticengineering.

The design goal for America'sWharfedale Es was to achieve thatelusive combination of crystal -likeclarity, shong bass and extremelyhigh efficiency. We met this objective

using computer optimization andholographic research, developingspeakers with extremely widedynamic range and no colorat on.They've won the praise of lovers ofevery kind of music. And seem des-tinec to keep that praise for yearsto come.

A Wharfedale E can fill a roomwith just a couple of watts. Or '-iandlehundreds for unusually large areas.At any level, with any music, youwont detect any of the harshness orroughness inherent in lesser speakers.

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The new E90 measures 45-3 8"H x 15-3 16"Wx 14-3-4"D and has a typical frequency response of30- 15,000Hz -± 3dB The E70 is 32" x 13-1 2" x14" with frequency response from 35- 18,000Hz

3dB The E50 measures 25" x 13-1,2" x 13-1 2"with a 4equency response of 40 18,000Hz t- 3dBThe new E30 is 22-3, 4" x 13-3, 16" x 10-5 16" witha 45- 18,000Hz 3dB frequency response Efficiencyis 94dB at 1 watt and 1meter for the E30,and 95dB for theother modelr. Ag

AWHARFEDALE

As much seems to

depend on how well the

design was conceived

and implemented as on

the basics themselves.

most willing to accept; which virtues are most important to you? Listenand decide for yourself. This writer has heard good and bad cones, domes,horns, etc. As much seems to depend on how well the design was con-ceived and implemented as on the basics themselves.

Since multi -driver systems have their own problems of phase cancella-tion, as well as their own virtue of sharing the music among drivers mostcapable of reproducing it, it's not that clear whether a four-way system isbetter than a three-way or whether the latter is necessarily superior to atwo-way. In my experience, the three-way, full -range system seems tohave an edge over the two-way, although I've heard good two-way sys-tems that outperform mediocre three-way setups. The difference be-tween a four-way and a three-way seems less apparent to me.

Ultimately, the performance depends upon how well the designer chosehis crossover frequency(ies) and how well the drivers perform in their des-ignated range. The crossover frequency in a two-way is frequently be-tween 1 and 3 kHz. A good -size woofer has difficulty getting up that highwithout cone breakup, and a small tweeter has trouble getting down thatlow smoothly. A midrange driver eliminates the necessity for either "out-side" driver to have to perform to the limits of its range.

In recent years there has been a proliferation of "mini" speaker sys-tems-as small as a shoebox, and even smaller. How well do they work? Inmy experience some of them are remarkably good. Ponderously deepbass-no. High -power capability-no. But for a smaller room and at mod-est listening levels many of them are highly competent.

Almost invariably, these speakers are two-way systems using a long-

throw woofer/midrange of a 4 to 6 -inch size and (usually) a dome tweeter.From, say, 150 Hz up, a good one can be virtually indistinguishable fromits full-size brother. Below about 150 Hz, they run out of steam-at leastas far as power -handling goes. Back to the laws of physics. A 4 -inch conecan move only so much air. Even if these small systems can respond atlower frequencies, distortion increases rapidly when they're pushed toohard.

Since most of the stereo imaging is created by frequencies above 100Hz, a subwoofer can be added to a mini system to flesh out the bass, and asingle subwoofer may even serve both channels. A subwoofer is simply aloudspeaker system, in a separate enclosure, designed to serve only in thelow -frequency region-from its cutoff up to, say, 100 to 200 Hz. Whenadded to a mini system the results can be quite surprising but, ideally, thesystem should be selected as an ensemble. Essentially you have created athree-way system out of a two-way, even though the woofer is separatelyenclosed, and the crossover frequency should be chosen appropriately forthat system. Obviously, the subwoofer efficiency should be matched tothat of the "satellites" if the response is to remain smooth.

The value of adding a subwoofer to a full -range system is less apparent.If the response of your present goes down to, say, 40 Hz, it's not going toget much lower by adding a subwoofer. Of course this assumes that notonly does your system get down that low, but that it can cleanly handlethe power in the bass region. If it can't, there might be some point inhanding off that excess to another speaker. Frequently, the supposedbenefits of adding a subwoofer to a good full -range system are fictitious.The listener is responding to a more powerful, exaggerated bass, not tosmoother, more extended bass.

If such a thing as a perfect loudspeaker-or even a truly superior de-sign-existed, the differences among them would be purely cosmetic. De-spite the advances made in recent years that put a mathematical footingunder loudspeaker design, art still counts as much as science. As long asthat continues to be the case, you will have to rely on your ears to guideyou as to the design that's best for you. HP


ESS Wins . . . AgainU.C.L.A. experiment repeated: in

comparative tests, students attending theUniversity of Wisconsin judge ESS

speakers superior to Bose, Pioneer, JBL,Infinity, AR and Cerwin Vega.

Hundreds of students par-ticipating in a series of blindlistening tests at two separateuniversities have now judgedESS speakers superior in per-formance to other top brandsby increasingly significant

margins.The con-

trolled directcomparisontests, con-ducted underthe supervi-sion of an in-dependentnational test-

ing laboratory, were designedto simulate home listeningconditions. Loudness dif-ferences were electronicallyequalized, and all speakerswere positioned for optimalperformance.

Without knowledge ofspeaker brands, the studentslistened in groups of 30 or lessto the same musical materialon each of the speakers. Theywere then asked to choosewhich speaker sounded bestin terms of clarity, accuracyand freedom from distortion.

"Of particular significanceis the fact that the pairings onthe two campuses were notidentical," report ESS techni-cians. "Even though differentspeaker matchings weremade, the participants stillchose ESS in 13 out of 14 com-parison situations at bothuniversities. And the 14th testat each campus was too closeto be statistically valid." Inmany cases, as the graph re-veals, ESS speakers were cho-sen over far more expensivecompeting loudspeakers bysignificant margins. '

25, SO%

ESS speakers differ from allother conventional speakersbecause they alone incorpo-rate the ESS Heil air -motiontransformer midrange -tweeter (invented by Dr.Oskar Heil, creator of theFET), licensed exclusively toESS. This unique principle ofsound reproduction has beencalled by one reviewer "thefirst real breakthrough inloudspeaker design in over 50years." By squeezing air like abellows instead of pushing it,the Heil achieves virtually"instant acceleration." Thisincreased velocity permits theHeil to provide a degree ofclarity, spaciousness andfreedom from distortion un-attainable by conventionaldrivers.

ESS will be conductingsimilar comparison tests oncollege campuses across thenation. Watch for the dramaticresults from Georgia Tech. Orbetter yet, visit your local ESSdealer and take the ESS Lis-tening Test yourself. See if youcan't appreciate the dif-ference.

Take the ESSListening Test

yourself!sound as clear as light

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A-38Price $111.80/setConfiguration 3 -wayMax power 50 watts (17 dBW)Impedance 4 to 8 ohmsDriver size 6" x 9" woofersMagnet 20 oz.Mounting Flush/surfaceFeatures Separate grilles with combinedpiezoelectric tweeter and midrange; available with10 -oz. magnet as A-39 for $103.80/set

A-36Price $95/setConfiguration 2 -wayMax power 50 watts (17 dBW)Impedance 4 to 8 ohmsDriver size 6" x 9" woofersMagnet 20 oz.Features Piezoelectric tweeters with sepa-rate surface -mounting mini grilles; available w th10 -oz. magnet as A-37 for $85/set

A-23Price $87.75/setConfiguration 2 -way coaxialMax power 40 watts (16 dBW)Impedance 4 to 8 ohmsDriver size 51/4"

Magnet 20 oz.Features Piezoelectric tweeter; biamp capa-bility; available with 10 -oz. magnet as A-24 for$79.50/set

A-20Price $58.75/setConfiguration 2 -way dual coneMax power 35 watts (15.5 dBW)Impedance 4 to 8 ohmsDriver size 5,/a"Magnet 20 oz.Features Includes wire and hardware; avail-able with 10 -oz. magnet as A-21 for $49.50/set

102

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PANASONICPanasonic Auto ProductsOne Panasonic WaySecaucus, N.J. 07094

EAB-752 Sound Pump IIPrice $79 95/prConfiguration 2 -way coaxialMax power 20 watts (13 dBW)Impedance 4 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting FlushFeatures High power, high compliance coax-ials; lightweight aluminum voice coil; designed toprovide excellent tone quality in a car's harshacoustic environment

EAB-911 Thin SeriesPrice $34.95/pr.Response 70 Hz to 15 kHzMin power 10 watts (10 dBW) sustained

CIRCLE 36 ON READER -SERVICE CARDCIRCLE 13 ON READER -SERVICE CARD -p.

Ar least not n the showroom. Chcnces a -e they've already heard them-or at

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rats deliverec rc every pert of the rocrr.

Baca use of the r unique ole-inch air -spring twee-er, you ge- nearly

h.mispherical dispersion EPI 100's.

The highs come across sharp and clear; rfe ows deep. ond smooth. And Lnlike

na--arly every sceal<er, you can listen for hcu-s without ;infer ng listening fargue.

There's virtualli no distortion. These are some of the reasons why the

P '00 has becorr= the industry standard for bookshelf louds.oeakers

And rest assured, while oftentirres pE-cple may nor bother to listen

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Max power 20 watts (13 dBW)Impedance 4 ohmsDriver size 5"Magnet 7 oz.Mounting FlushFeatures Thin, one-piece construction w thrain shield; easy two -hole mounting

Models also availableEAB-905 Hi -Power Sound Pump II,$77.95/pr.; EAB-920 Sound Pump100, $159.95/pr.; EAB-774 SoundPump, $59.95/pr.

PIONEERPioneer Electronics of America1925 E. Dominguez St.Long Beach, Calif. 90810

TS -X9Price $239.95Configuration 2 -wayResponse 50 Hz to 22 kHzMax power 40 watts (16 dBW)Driver size 33/4" woofer; 1" dome tweeterMounting Surface

TS -W203Price $189.95Configuration WooferResponse 28 Hz to 10 kHzMax power 60 watts (16.5 dBW)Driver size 8"Magnet 20 oz.Features Fits 6" x 9" opening

TS -696Price $139.95Configuration 2 -wayResponse 35 Hz to 18 kHzMax power 40 watts (16 dBW)Driver size 6" x 9"Magnet 20 oz. (high efficiency)Features Crossover frequency at 4 kHz;25/8" midrange

TS -X6Price $124.95Configuration 2 -wayResponse 80 Hz to 20 kHzMax power 20 watts (13 dBW)Driver size 4" woofer; 4" passive radiator;

25/e"tweeterMounting Surface

TS -167Price $82.95Configuration 2 -way coaxialResponse 30 Hz to 20 kHzMax power 20 watts (13 dBW)Impedance 4 ohmsDriver size 2" tweeterMagnet 10 oz.Mounting DoorFeatures Tweeter horn built into grille; high -compliance woofer

TS -692PriceResponseMax powerDriver sizeMagnet

TS -T3Price

104

$73.9535 Hz to 16 kHz20 watts (13 dBW)6" x 9"20 oz

$69 95

Configuration TweeterResponseMax powerDriver sizeMagnetMountingFeatures

250 Hz to 20 kHz60 watts (17.75 dBW)31/2"

6.5 ozFlushBuilt-in crossover network

TS -164Price $59.95Configuration 2 -way coaxialResponseMax powerImpedanceDriver sizeMagnetMountingFeatures

40 Hz to 16 kHz20 watts (13 dBW)4 ohms2" tweeter10 oz.DoorSame as Model TS -167

TS -M2Price $54.95Configuration TweeterResponse 450 Hz to 20 kHzMax power 20 watts (13 dBW)Mounting DashFeatures Adapts to any car system; adjusta-ble level controls

TS -35PriceResponseMax powerMounting

TS -120PriceResponseMax powerImpedanceMountingFeatures

$47.9580 Hz to 13 kHz40 watts (16 dBW)Flush/surface

$40 9580 Hz to 16 kHz8 watts (9 dBW)4 ohmsDoorThin design

Models also availableTS -202, $219; TS -695, $159.95;TS -168, $139.95; TS -694, $95.95;TS -693, $81.95; TS -165, $72.95;TS -691, $59.95; TS-162DX,$59.95; TS -121, $51.95; TS -160,$41.95; TS -5, $29.95

POWER DRIVERecoton Corp.46-23 Crane St.Long Island City, N.Y. 11101

CS -3690Price $119.95Configuration 3 -wayResponse 60 Hz to 20 kHzMax power 50 watts (17 dBW)Impedance 8 ohmsDriver size 51/4" woofer; 3" midrange; two 3/4"

horn tweetersMagnet 20 oz.Mounting FlushFeatures Built-in mesh grille; hardware andspeaker wire included

CS -35Price $69.95Configuration 3 -wayResponse 60 Hz to 15 kHzMax power 20 watts (13 dBW)Impedance 8 ohmsDriver size 51/4" (woofer)Magnet 20 oz.

CS -105Price $39 95


Configuration Super -thin flushmount doorspeaker

Response 80 Hz to 16 kHzMax power 15 watts (11 75 dBW)Impedance 8 ohmsDriver size 51/2"

Magnet 3 oz.Mounting FlushFeatures Requires only 1" behind the panel

Models also availableCS -369, $79.95, CS -265, $64.95

PSBPSB Speakers, Inc.P.O. Box 144St. Jacobs, OntarioCanada, NOB 2N0

PSB AlphaPrice $110Dimensions 4H x 8W x 5DConfiguration 2 -wayResponse 80 Hz to 20 kHz, +2 dBMin power 20 watts (13 dBW)Impedance 4 ohmsDriver size 3 9/10" woofer, 1" tweeterMounting SurfaceFeatures Mounting bracket and hardware in-cluded; speaker shaped to fit into rear deck of car

PYRAMIDPyramid Industries12970 Branford St.Arleta, Calif. 91331

PMS-5APrice $149.95Configuration 3 -wayResponse 25 Hz to 22 kHz, + 3 dB re 114 dB

SPL at 1 meter at 1 wattMax power 40 watts (16 dBW)Impedance 4 ohmsDriver size 6" x 9"Magnet 20 ozMounting FlushFeatures Dual voice -coil subwoofer handlesfrequencies from 20 Hz to 300 Hz; two sealed -back midranges handle frequencies from 300 Hz to4 5 kHz; multifaced tweeter for directional surface -mount applications

PMS-4APrice $99.95

Models also availableS99 95

QUADRAFLEXQuadraflex Industries1301 65th St.Emeryville, Calif. 94608

AS -87Price $99.95Configuration 3 -way tnaxial designMin power 2 watts (3 dBW)Max power 30 watts (14.75 dBW)Impedance 4 ohmsDriver size 6" xMagnet 24 oz.

Bass Fishing?

THE ELECTRONIC SUBWOOFER'Achieve true subwoofer capability (flat response ID 20 Hz) from your Allisonspeaker systems. Also gives similar results when used in conjunction with otherwe I designed, long excursion, acoustic suspension systems such as AR, Advent,and 0 -hers.

Literature providing specificatons and statement of Full Warranty for FiveYears is available on request.

ALLISON ACOUSTICS INC. 7 Tech Circle, Natick, MA 01760CIRCLE ON REI DERSENVICE CARD

Audio Pulse Digital Time Dela-; is pos-sibly the greatest advan:e r soundreproduction since stereo. A strongstatement indeed, but we fed itronglyabout it. By means oftime delay, the ambi-ence cf the live per-formance is returnedto the music in a waynot poss.ble withordinary stereo repro-ducticn.

Stereo gave us leftand right imaging -Audic Pulse gives usthe realism of depthanc spatial percep-dor by digitally pro-cessing, delaying and

Audio'I I Pulse

recirailating program material tl-rougha secondary set of rear speaker -3. Theapparent size and acoustic treatmentcf that area can be adjusted by simple

fro -it -panel functions.Digital time delay

must really be heardto le appreciated...bur once you dp, youwon't want to listenwithout it.

Audio Pulse offerscomplete digital timedelay systems. ModelTwo, the new Model1000 and two sets ofspecially designedsecondary speakers.

YOU WON'T MISS IT UNTIL IT'S GONE...© 1979 Audio Pulse, Inc. 432. Arder. Drive. El Monte, CA. 91734 (213) 579-4873

nth, mum TTOM-0/1A ersma

0/317AL TIME -(FLAY SYSTEM

1980 Edition105

Mounting FlushFeatures Grilles and mounting hardware in-cluded

AS -77Price $59.95Configuration 2 -way coaxial designMin power 2 watts (3 dBW)Max power 20 watts (13 dBW)Impedance 4 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting FlushFeatures Grilles and mounting hardware in-cluded

Models also availableAS PT $69 95. AS 67 $44 95

REALISTICRadio Shack1400 One Tandy CenterFt. Worth, Texas 76102

12-1854Price $79.95/pr.Dimensions 65/8H x 10W x 23/8DConfiguration 3 -wayResponse 50 Hz to 15 kHzMax power 20 watts (13 dBW)Impedance 8 ohmsDriver size 51/4" woofer; 21/4" midrange

tweeterMagnet 5.7 oz.Mounting Surface

12-1848Price $29.95/pr.Configuration SingleResponse 100 Hz to 15 kHzMax power 15 watts (11.75 dBW)Impedance 8 ohmsDriver size 5"Magnet 10 oz.Mounting FlushFeatures Instant -mount retainer rings in -

40 -1256Price $49.95Configuration 2 -wayMax power 60 watts (17.75 dBW)Impedance 8 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting Flush

Models also available12-1853, $59 95/pr ; 12-1855.$27.95/pr.: 40-1255, $39.95

ROAD SOUNDSSuntron425 7th St. N.W.Washington, D.C. 20004

RS -2000Price $100Configuration 2 -way

2" Min power 10 watts (10 dBW)Max power 50 watts (17 dBW)Mounting SurfaceFeatures Metal case

RS -3000Price $70Dimensions 6H x 9,/2W x 1DConfiguration 3 -wayResponseMin powerMax powerImpedanceDriver sizeMagnetMounting

80 Hz to 17 kHz15 watts (11.75 dBW)30 watts (14.75 dBW)8 ohms51/4" x 51/4"20 oz.

Surface

RS -543Price $40Dimensions 51/4H x 5V4W x 3DConfiguration 3 -wayMax power 25 watts (14 dBW)Impedance 8 ohmsDriver sizeMagnetMounting

51/4" x 51/4"20 oz.Flush

Models also availableRS -694, $50, RS -412, $50, RS -693, $40

ROYAL SOUNDRoyal Sound Co., Inc.24P Buffalo Ave.Freeport, N.Y. 11520

RS -6100Price $300/prDimensions PAH x 43/4W x 51/8DConfiguration 2 -way

e final movement of Mahler's "Symphony of a Thousand" FaustusEscends to Heaven amid the singing of angelic choirs.

Listen to the angels sing on AUDIO LAB CONSORT speakers by Unitronex.The best speakers this side of Heaven.

For detailed product infrmation and the locationof tha AUDIO LAB CONSORT dealer

nearest you write: UNITRONEX CORPORATION,

1171 Landmeier Road, Elk Grove Village, IL 60007

audio lab consortUnitronex: State-of-the-art speakers you won't have to sell your soul to afford.


Features Basic housing and componentschemically treated to inhibit corrosion; heavy-dutymounting hardware to resist extremes of tempera-ture, humidity, vibration, and jarring; heavy -gaugewiring harness to insure full fidelity sound at fullpower output; screw -type speaker terminals forease of mounting; low -frequency (automobile use),high -frequency (home use) switchable crossovernetworks; LED green power light; LED red signaloverload light

RS -6030Price $150/pr.Dimensions 6H x 35/8W x 3DConfiguration 2 -wayFeatures Basic housing and componentschemically treated to inhibit corrosion; heavy-dutymounting hardware to resist extremes of tempera-ture, humidity, vibration, and jarring; heavy -gaugewiring harness to insure full fidelity sound at fullpower output; screw -type speaker terminals forease of mounting

Models also availableRS -6045N $200/pr

SANYOSanyo Electric Co.1200 West Artesia Blvd.Compton, Calif. 90220

SP -795Price $99.95/pr.Dimensions 41/eH x 71/2W x 41/4DConfiguration 2 -wayResponse 100 Hz to 20 kHz

Max power 35 watts (15.5 dBW)Impedance 4 or 8 ohmsDriver size 4" x 7"Magnet 20 oz. (woofer); 4.9 oz. (tweeter)Mounting SurfaceFeatures Black ABS cabinet; designed foruse with Sanyo biamp systems or conventionalhookup; separate L -C crossover system; swivel -mounting brackets included

SP -410Price $89.95Dimensions 4H x 10W x 3DConfiguration 3 -wayResponse 70 Hz to 20 kHzMax power 25 watts (14 dBW)Impedance 4 or 8 ohmsDriver size 4" x 10"Magnet 15 oz. (woofer); 2.2 oz. (midrange);

0.6 oz. (tweeter)Mounting FlushFeatures Attractive metal mesh grille;removable crossover for conventiona or biampsystems; perfect original equipment upgrade forcars with 4" x 10' speakers

SP -759Price $79.95Configuration 3 -way convertibleResponse 70 Hz to 20 kHzMax power 25 watts (14 dBW)Impedance 4 or 8 ohmsDriver size 5" x 7"Magnet 15 oz. (woofer); 2.2 oz. (midrange);

3.6 oz. (tweeter)Mounting Flush or SurfaceFeatures Removable crossover for conven-tional or biamp system

SP -757PriceDimensions $55H4x.957W

Configuration 2 -way convertible coaxialResponse 80 Hz to 15 kHzMax power 18 watts (12.75 dBW)Impedance 4 or 8 ohmsDriver size 5" x 7"Magnet 15,3 oz. (woofer); 0,5 oz. (tweeter)Features Designed for rear -deck, door pan-els, under or over dash, or flush mounting whendetached from convertible housing

SP -737Price $69 95/pr,Dimensions 6'/2H x 6'/2W x 2DConfiguration 3 -wayResponse 45 Hz to 20 kHzMax power 24 watts (14 dBW)Impedance 4 or 8 ohmsDriver size 61/2"Magnet 20 oz. (woofer); 2.2 oz. (midrange);

0.6 oz. (tweeter)Mounting FlushFeatures Removable crossover for conven-tional or biamp system

Models also availableSP -777, $100, SP -780, $89.95;SP -770, $80; SP -768, $69.95; SP -731, $44.95; SP -733, $59.95/pr.

SOUND BARRIERSound Barrier Corp.1050 E. Dominguez, Unit PCarson, Calif. 90746

e)ympatl)yfor tl)e AultIn their rock and roll classic about the Prince of Darkness, tie ones setan electric trap for the demon and capture him.

Listen to the devil get his due on IMPACT speakers by Unitronex. You'll beamazed at how easily diabolical power can be controlled.

For detailed product information and the location of the IMPACTdealer nearest you write: UNITRONEX CORPORATION,1171 Landmeier Road,Elk Grove Village, IL 60007 mirmwsimsgaraUnitronex: State-of-the-art speakers you won't have to sell your soul to afford.

CIRCLE 32 ON READER-SERV CE CARD1980 Edition107

HAS THE BEST IN AUDIO HI-FI:TUNERS RECEIVERS TURNTABLES

HEADPHONES MICROPHONES

AUTOSOUND ACCESSORIES

AND

Pan American

Electronics, Inc.A

:.:

CAN SELL IT FOR LESS

Ratio /MeltAUTHORIZED SALES CENTER

- EVEN SALE -PRICED ITEMS -

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.:

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....; NO TAXES on out-of-state shipments. i:x.

FREE delivery available on minimum orders.WARRANTIES honored by Radio Shacks .

::::: ,:.:CALL OR WRITE

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':-: *..FOR INFORMATION OR QUOTE...-. *.

:::: East 212/283-0534

West 213/564-5463 ::.:.North Central 312/666-6098

South Central ,r-nair, number) 512/581-2765::.:.....::.::.:.....::.

1117 Conway

Mission, Tx. 78572 .CIRCLE 27 ON READER -SERVICE CARD

41111

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Ir. ,4.:;tzrzf.";Z4'- )

The handcrafted SpeakerlabI hirties featuring the patentedNestorovic Woofer Sy stem areunlike any speakers you've everheard. Find out about Speakerlab'sinnovative speakers, kits. and rawspeakers. N'ou ran save up to 50'4when you build them yourself.

Read about all the details in ourfree catalog. Send for yours today!

I name

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I ziP /reakeelabI 21 I li, 737, \

. 1.1.1ont.tion tis1113

Phantom 3BPrice $399.80Dimensions 5H x 81/4W x 71/80Response 50 Hz to 20 kHz, }75 dB re 70 dB

SPL at 1 meter at 1 wattMin power 3 watts (4.75 dBW)Max power 100 watts (20 dBW)Impedance 4 to 8 ohmsDriver size 4"Magnet 10 oz.Mounting SurfaceFeatures Built-in amplifier with 7 -bandgraphic equalizer control box; die-cast aluminumflams

Phantom 3Price $229.95Dimensions 5H x ElVeW x 7'/eDConfiguration 3 -wayResponse 50 Hz to 22 kHz, 18 dB re 75 dB

SPL at 1 meter at 1 wattMin power 1 watt (0 dBW)Max power 100 watts (20 dBW)Impedance 4 to 8 ohmsDriver size 4"

1Magnet 0 oz.Mounting SurfaceFeatures Enclosure type high performarcewith aluminum die-cast frame; may be used as abookshelf speaker at home

787Price $129.95Dimensions 9'/2H x 65/eW x 33/4DConfiguration 3 -wayResponse 80 Hz to 20 kHz, ± 10 dB re 75 dB

SPL at 1 meter at 1 watt1 watt (0 dBW)200 watts (23 dBW)4 to 8 ohms6" x 9"20 oz.Flush/surface11/2" voice coil

Min powerMax powerImpedanceDriver sizeMagnetMountingFeatures

Falcon 20Price $69.95Dimensions 11/2H x 51/2WConfiguration 2 -wayDriver size 11/2" tweeter with samarium cobalt

magnet

Models also available$249.95; 767 Compo Kit,

$159.95; 777R, $115.95; Bonanza35, $54.95; DC -8R, $37.95

SOURCESound Source1435 Jacqueline DriveColumbus, Ga. 31907

UD-1Price $185/pr.Dimensions 3H x 111/2W x 7DConfiguration 2 -wayResponse 40 Hz to 20 kHz, ±3 dBMin power 12.5 watts (11 dBW)Max power 100 watts (20 dBW)ImpedanceDriver size

MagnetFeatures

8 ohms6" woofer/midrange; 1" cloth dometweeter; two phenolic -ring ambi-ence tweeters20 oz.Hot -lacquered walnut cabinet

SPARKOMATICSparkomaticRoutes 6 and 209Milford, Pa. 18337

SK -6950Price N/AConfiguration 4 -wayResponse 50 Hz to 20 kHzMax power 100 watts (20 dBW)Impedance 4 ohmsDriver size 6" x 9'Magnet 20 oz.Mounting DeckFeatures Special magnet design with hole incenter allows air cooling and directs magnetic en-ergy to where required; 11/4" voice coil dissipatesheat and allows for better power -handling capabil-ity at low frequencies; large damper for improvedbass response; 2 tweeters for better power -han-dling capabilities at high frequencies; midrangespecially designed for low resonance

SK -600Price N/ADimensions 11/20Configuration 2 -way coaxialResponse 70 Hz to 15 kHzMin power 15 watts (11.75 dBW)Max power 30 watts (14.75 dBW)Impedance 4 to 8 ohmsMounting DoorFeatures Slim enough to fit all door applica-tions regardless of size; snap -on grille designed soit will clear all window cranks; new high-energystrontium cobalt magnet with heavy magneticstructure; cone has treated edge to assure longlife; new bridge design; resonance -free perform-ance

SK -700VPrice $89.95Dimensions 21H x 8W x 8DConfiguration 2 -wayResponse 50 Hz to 15 kHz, ±3 dBMm powerMax powerImpedanceDriver size

MagnetMountingFeaturesRVs

25 watts (14 dBW)50 watts (17 dBW)4 to 8 ohms61/2" woofer; 41/2" midrange/tweeter (Alnico V magnets)10 oz.SurfaceDesigned exclusively for vans and

SK -6922TPrice $69.95Dimensions 61/4H x 9'/4W x 4DConfiguration 3 -wayResponseMm powerMax powerImpedanceDriver sizeMagnetMounting

30 Hz to 17 kHz, f3 dB40 watts (16 dBW)80 watts (19 dBW)4 ohms41/2" x 7W20 oz.Flush

Features 6" x 9" foam -edge air -suspensionwoofers; direct -radiating midrange speakers;dome horn -loaded tweeters; crossover networks;Thermotest'" grilles and housings; new bridge de-sign

SK -6920CPrice $47.95Dimensions 61/471.-195x 91AW x 35/50Configuration 2 -wayResponse 30 Hz to 15 kHz, ±3 dBMin power 25 watts (14 dBW)Max power 50 watts (17 dBW)Impedance 4 to 8 ohmsDriver size 45/ir x 71/4"Magnet 20 oz.Mounting FlushFeatures 6" x 9" foam -edge air -suspensionwoofers; built-in coaxial 2" tweeters; Thermotest'"grilles and housings; new bridge design; crossovernetworks


Models also availableSK -6900, $89.95; SK -525, $89.95,SK -522T, $59.95; SK -622T,$49.95; SK -4120C, $47.95

TENNATenna Corp.19201 Cranwood ParkwayCleveland, Ohio 44128

CPS-69EMPrice $184.95Configuration 2 -way coaxialResponse 50 Hz to 18 kHz, +5 dBMax power 100 watts (20 dBW)Impedance UniversalDriver size 6" x 9"Magnet 10 oz.Mounting FlushFeatures Built-in power amplifiers; wiremesh grilles with removable mounting studs forease of installation

PS-69RDPriceResponseMax powerImpedanceDriver sizeMagnetMountingFeatures

$153.9950 Hz to 12 kHz100 watts (20 dBW)Universal6" x 9"10 oz.FlushBuilt-in power amplifiers

HE -481Price $139.95Dimensions 71/eH x 4 7/16W x 45/eDConfiguration 2 -wayResponse 120 Hz to 20 kHz, t 5 dB re 90 dB

SPL at 1 meter at 1 wattMM power 60 watts (17.75 dBW)Max power 100 watts (20 dBW)Impedance 8 ohmsDriver size 4"Magnet 6 oz.Mounting SurfaceFeatures Custom mounting brackets can bepositioned vertically or horizontally; wire meshgrilles

HE -531Price $119.95Configuration 3 -wayResponse 90 Hz to 20 kHz, +5 dB re 85 dB

SPL at 1 meter at 1 wattMin power 30 watts (14.75 dBW)Max power 60 watts (17.75 dBW)Impedance 8 ohmsDriver size 51/4"

Magnet 9.3 oz.Mounting FlushFeatures Hi -lo frequency switch; removablestuds for easy installation; wire mesh grilles

TM -6920CPrice $87.95Configuration 2 -wayResponse 60 Hz to 17 kHz, ±5 dB re 90 dB

SPL at 1 meter at 1 wattMin power 40 watts (16 dBW)Max power 60 watts(17.75 dBW)Impedance 8 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting FlushFeatures Aluminum voice coil for high power;wire mesh grilles

CO-620RMPrice $59 95Configuration 2 -way

Continued on page 115

SEND FOR QUOTE & PRICES ON OVER 100 FAMOUS BRANDS

WE HAVE 31 YRS. RELIABILITY IN MAIL ORDER

I3 INrwl%SUPER reackiV

Stereo Dynetic Phono CartridgeConsistent record tracking has always been challenged

by such ever-present lectors as warp, static, lint anddust-especially when these lectors combine with

today's "hot" recordings.

f sweetsixteen

11=11=21 N195111..libono Cartridge 14 ilh

t.% his lip

fact:dramaticfreedom

from distortionin a mid -priced cartridge.

146 OLD BROOKFIELD ROADDanbury, Conn. 06310

I.54 EXIT 7 I MOLE TO 1154101 ROAD. TAXI TIRO SUCCISSIVIRIGNITS INC TORN OM SHAM lilt NI raw OF UNION TRYST CO RANI MOM NI MID MI 9 MA JO

(203) 744-6421 - (212) 369-6212 n'Ut 4.411


maetinYou ordinarily see Martin speakers advertised one at a time. But there

are 16 superb, sweet-sounding Martin speaker models, manufactured inone or more of our four production facilities in the USA. France. Spain orNorway - ranging in price from 599 to 5750.

We make only one kind of product ... fine loudspeakers. They are metic-ulously crafted one by one for a discerning audience which demands theSound of Perfection.

Martin Speaker Div.Eastman Sound Mfg. Co., Inc.Mickleton, N.J. 08056609/423-0100

1980 EditionCIRCLE 23 ON READER -SERVICE CARD

109

5 easy ways to upgrade your present car

by Robert Angus

Good-byeSquawk -Box Speaker!

If you're disappointed with the sound of your carstereo system, one source of that dissatisfaction maybe your current speaker(s). Whether you're movingfrom a single, factory -installed squawk -box speaker toa stereo rig, or merely upgrading your speakers, youhave essentially five ways to go about it.

First, you can simply select a high quality replace-ment speaker for your current single -cone unit. Ifyou're interested in a stereo system, you can choose be-tween surface -mounting coaxial or triaxial units, posi-tioning them in cutouts, putting separate woofers andtweeters at different locations, or installing one of themini acoustic suspension systems (if your vehicle hasthe room).

Which way should you go? We can't emphasizeenough that your choice will be limited by the vehiclein which you install the system. But some advice is gen-erally applicable. To help you in selecting the best sys-tem, we'll look at what's available, suggest what ap-proach is best for certain types of vehicles, set downthe factors involved in matching speakers to the rest ofyour system, and outline what is entailed in installingspeakers.

The choices available to mobile audiophiles are more varied than theyhave ever been, and the prospects for creativity in speaker selection andplacement are almost as unlimited as in the do-it-yourself days of earlyaudio.

True, you won't have quite as much freedom in selecting and mountingspeakers in your car as those for your home. The interior volume of thepassenger compartment is smaller, perhaps only one -eighth to one -tenththat of your favorite listening room; moreover, it's virtually impossible to


relocate speakers once they have been installed. Nonetheless, the newcomponent -type car stereo speakers do offer a wide range of possibilities.

Traditional round and oval speakers now come in coaxial and triaxialdesigns, with improved magnets and cone and surround design. Min-iaturized versions of home acoustic suspension systems utilize the trunkas a resonance chamber, or are available in their own little aluminum en-closures. Woofers, tweeters, and crossovers are increasingly common asseparately -mounted custom systems in vans and cars. New mountingwrinkles include wedge and surface mounts, in -door and rear -deck flushdesigns.

What you drive dictates which of these options are available to you.Limited room in sub -compacts (Datsun 510s and VW beetles, for ex-ample) automatically eliminates the more exotic speaker systems and in-stallation techniques. Vans, tractor -trailer cabs, or luxury cars offerwider choices. So before buying car speakers, study your car.

With the aid of a screwdriver and a ruler, check out where speakersmight best be placed. Is there a cutout in the rear deck? You probably canlocate one by examining the deck area either with the fabric cover re-moved, or from the trunk. Next, check the dimensions: Cutouts are de-signed for either 6" x 9" or 4" x 10" speakers. If there is no cutout, you oran installer may be able to make your own to hold virtually any size andshape. The rear deck is an ideal location for a woofer, and also a goodplace for mounting full -range acoustic suspension speakers such as EPI'sLS -70s.

Then check the front -door panels. Which are the best spots for tweeters,midrange units, or round full -range speakers? Snap off the door paddingwith your screwdriver. Measure the distance between the door frame andthe interior surface. That will determine how deep a speaker you canmount in the door. You'll also want to know how large a speaker you canmount, and approximately where you can put it. Also measure how muchclearance you have with the window rolled all the way down. Generally,the remaining space will be at the bottom of the door-a location moresuited to bass reproducers than to tweeters.

If neither of these locations is practical, you may have to consider somevariety of surface -mount such as a pair of wedge speakers under the front

Options for upgrading your carspeakers include those representedhere by Sanyo's SP -759 triaxial(left), Ultralinear's CarponentM-12 acoustic suspension system(top), and AFS/Kriket's Klassic(TM) 2821 (above), an inexpensivereplacement speaker.

1980 Edition 111

... Be certain that

your new speakers

are compatible withyour car stereo's

amplifier .. .

seats facing forward, or on the side walls or roof. You can surface -mountspeakers just about anywhere. Make sure to anchor them firmly if youput them on the rear deck. The same applies to the self-contained acous-tic suspension speakers. In more roomy vehicles these can be hung belowyour dashboard.

Which approach is best-surface-mount or flush, self-contained systemor separate components, rear -deck or up front? It depends on your ve-hicle. However, there are some generalizations. Woofers reproduce bassfrequencies. The sound they produce is generally nondirectional (and, in-cidentally, is heard to maximum advantage when the windows areclosed), which means that their placement in the car is not critical.Tweeters, on the other hand, project high -frequency sound similar to thebeam from a flashlight. For best results, they should be directed at theears of listeners in the front seat. Midrange reproducers handle thesounds in between, which are more directional than deep bass, less direc-tional than treble. Placement is less critical than that for tweeters, butthey too should be aimed at the ears of front -seat listeners.

Full -range speakers and systems call for compromises. Woofer -tweetercombinations designed for rear -deck mounting (to take advantage of thecar trunk as a baffle) generally bounce their high frequencies off the rearwindow, a less -than -ideal situation.

Generally speaking, in passenger cars separate speaker components,chosen and installed with care, represent the best possible sound. Theyalso cost more and are expensive to install-unless you intend doing thework yourself. (They'll give you the most trouble.) As we've seen, it's nec-essary to find a location with good baffling possibilities for the bass, andanother location in close proximity to the driver and passenger for thetweeters. Vans or boats usually have plenty of room for a mini -bookshelfsystem that is designed for home use.

Another generalization: The better -baffled any woofer or full -rangemodel is, the better the sound. Flush -mounts, which use car interior pan-eling as a baffle, are therefore preferable to surface mounts (unless thespeaker system in question is a fully enclosed acoustic suspension model).Flush -mounts also look better.

Are all -in -one units (woofer and tweeter on a single chassis or plate,coaxials and triaxials) better -sounding than full -range single -cone speak-ers? Given intelligent mounting, that's almost always the case.

You should also be certain that your new speakers are compatible withyour car stereo's amplifier in terms of power capacity. While many of thenew breed of component -type loudspeakers are capable of handling 50watts (17 dBW ), some of the cheaper replacement speakers used prior to1978 distort or fall apart when fed more than 5 watts (7 dBW). Con-versely, if the amp section of your receiver/tape deck delivers only 11/2watts (13/4 dBW), don't waste your money on a good acoustic suspensionspeaker: There's insufficient power to deliver really good sound, the chiefreason for buying an acoustic suspension speaker or system.

If you're unsure of your receiver's power output, copy down the modelnumber and check it with your dealer before buying speakers. Generally,if it was made before 1978 and wasn't sold to you as a custom unit, it prob-ably can't produce more than 11/2 watts. With a separate power booster,you could increase the output 10 to 20 times.

Does the amplifier know the difference between a $5 and a $150speaker, a single full -range model or separate components, a one -coneunit or a plate containing woofer, tweeter, and midrange? No, providedthat the system is matched. If you have any doubts, consult your dealer.

As a last step prior to buying your speakers ask yourself this importantquestion: Who will install them? If you're handy with tools, you can dothe job yourself and save a bundle. The necessary technical expertise can


Phn' by Rob," flat's

be acquired from the speaker maker's literature or from a handbook oncar stereo installing (for example, Tab Books' Auto Stereo Service & In-stallation, by Paul Dorweiler and Harry Hansen, $8.95), but it does re-quire some gymnastics under the dashboard and elsewhere inside the pas-senger compartment.

If you choose otherwise, you must find a reliable installer. Sometimesthe dealer will install the speakers. Audio salons and other stores whosebusiness isn't primarily car stereo generally can recommend an experi-enced installer. They don't guarantee his work; but his reputation is onthe line with the store, so he has a strong incentive to do good work. Astore that installs as well as sells does guarantee its own work, which canbe important in the case of a very expensive installation in a very expen-sive vehicle. If you buy the speakers where the price is lowest and then goshopping for an installer, you have less leverage if anything goes wrong,even though you paid less money initially.

Before hiring someone to install your auto stereo system, it is a goodidea to look over one of his installations, how well the woofers and tweet-ers were placed, and his overall neatness. Avoid those who install mainlyCB radio and hang -on speaker systems for low -wattage stereo gear. Theymay understand cars and do neat work, but they seldom know anythingabout high fidelity sound.

If you already have a set of speakers in your car, upgrading them isfairly simple. The toughest part of the job-running the wiring and mak-ing the necessary cutouts-has already been done. Simply remove theexisting grille, loosen the mounting screws, pull out and disconnect thespeaker leads, then reverse the process, substituting your new speaker.But be sure before you buy your new speakers that they will fit in thespace where the old ones were.

What are some typical ways to improve your system? If you have a pairof single -cone ovals in the door or rear deck, why not mount a coaxial ortriaxial up front and/or a three-way acoustic suspension system in theback? The results are dramatic. Or you might replace or augment thefull -range speakers in your doors with a woofer in the back cutout. Youcould add a pair of tweeters in the dashboard or door posts to complement

Installing car speakers requires acertain expertise with tools. Above,professional installer removes in-terior door panel (left), and thendrills mounting holes. He has alsocut away part of the door to acceptthe speaker.

1980 Edition 113

Overall neatness is important.Above, the installer hides the wir-ing under the carpeting before at-taching it to the speaker. Upgrad-

ing speakers a second time is mucheasier; usually no additional cut-

ting or wiring is necessary.

the rear -deck woofer and door -mounted midranges.For really deep bass, you might try Visonik's Sub 1 system, consisting of

subwoofer and two tiny acoustic suspension systems. If there isn't roomfor three self-contained speakers in your vehicle, try a trunk -loadedwoofer. If you do buy S self-contained systems, it's important to mountthem securely by bolting them to the car chassis. Don't merely anchorthem to the fiberboard deck floor; they're very heavy for their size, and, incase of a sudden stop, can tear themselves free of an insecure mount andcome hurtling forward. Be sure too that they don't obstruct your rear vi-sion, a safety violation in some states.

Whether you're installing your first system or upgrading your speak-ers, remember that you probably won't own your present car forever.Should you install the ultimate mobile system? After all, car stereospeakers don't add to the value of your car when you trade it in-or dothey? This answer depends on who buys your car.

Most used -car dealers don't know what they're looking at when theyappraise the speakers in your car. Accordingly, a friend of mine, who isboth a car and audio enthusiast, has kept the cheap speakers he replacedrecently. When he sells his present car he plans to reinstall the cheapspeakers and transfer his more expensive JBLs to his new car. "Once theholes are there, you have to fill them with something," he explained. "Butno way am I going to deliver a pair of JBLs to the buyer. I'd never get mymoney out of them that way." (He is prepared to write off his cassettedeck/tuner/amp, however-he wants more power and an equalizer nexttime.)

If your car contains a good stereo system, sell to a private party. Youmay not get a much higher price, but the car, surprisingly, will be easierto sell.

Car stereo speakers really are no more of a mystery than speakers foryour living room-and thanks to some familiar brand names they're be-coming just as easy for audiophiles to listen to. If your car is one of the 17million or so with a stereo system that's more than one and a half yearsold, chances are you can make a significant improvement in its sound sim-ply by upgrading your speakers. MP


Response 120 Hz to 17 kHz, -E 5 dB re 90 dB Max power 120 watts (20.75 dBW) Magnet 40 oz.SPL at 1 meter at 1 watt Impedance 4 ohms Mounting Flush/surface

Min power 20 watts (13 dBW) Driver size 6" x 9" Features Chromed cast frame; 11/2" voiceMax power 50 watts (17 dBW) Magnet 40 oz. coil; waterproof construction; 5 -year warranty;Impedance 4 or 8 ohms Mounting Rush/surface hardware includedDriver size 5W Features Chromed cast frame; 11/2" voiceMagnet 20.7 oz. coil; biampable; waterproof construction; 5 -year K-6922MountingFeatures

FlushWire mesh grilles

warranty; hardware included Price $120Dimensions 9V4H x 6 2/5W x 3 4/5D

Models also availableCPS -69E0, N/A; TCM-6920T,$110.95; TCM-620T, $88.95; TR-6930EM, $84.95; CO-6930RM,$79.95; TM -620C, $74.95

TRIFLEXOrovox Sound11545 Tuxford Ave.Sun Valley, Calif. 91352

TR-2001Price $63.80Dimensions 7H x 9W x 6DConfiguration 3 -wayResponse 75 Hz to 19.6 kHzMin power 6 watts (7.75 dBW)Max power 40 watts (16 dBW)Impedance 8 ohmsDriver size 5WMagnet 20 oz.Mounting Surface

Models also availableTF 1000 $49 95

TRUSONICTrusonic10530 Lawson River Ave.Fountain Valley, Calif. 92708

K-6943Price $175Dimensions 91/41-I x 6 2/5W x 4 1 /5DConfiguration 3 -wayResponse 25 Hz to 25 kHz, ±4 dB re 98 dB

SPL at 1 meter at 1 wattMin power 3 watts (4.75 dBW)Max power 120 watts (20.75 dBW)Impedance 4 ohmsDriver size 6" x 9"Magnet 40 oz.Mounting Flush/surfaceFeatures Chromed cast frame; 11/2" voicecoil; biampable; waterproof construction; 5 -yearwarranty; hardware included

K-6923Price $150Dimensions 91/4H x 6 2/5W x 3 4/5DConfiguration 3 -wayResponse 30 Hz to 25 kHz, ±4 dB re 96 dB

SPL at 1 meter at 1 wattMin power 3 watts (4.75 dBW)Max power 80 watts (19 dBW)Impedance 4 ohmsDriver size 6"Magnet 20 oz.Mounting Flush/SurfaceFeatures Chromed cast frame; 11/2" voicecoil; biampable; waterproof construction; 5 -yearwarranty; hardware included

K-6942Price $145Dimensions 91/4H x 6 2/5W x 4 1/5DConfiguration 2 -wayResponse 25 Hz to 25 kHz, ±4 dB re 98 dB

SPL at 1 meter at 1 wattMin power 3 watts (4.75 dBW)

K-6941Price $120Dimensions 9,/41-1 x 6 2/5W x 4 1/51)Configurat on SubwooferResponse 25 Hz to 2 kHz, ±3 dB re 97 dB

SPL at 1 meter at 1 wattMin power 3 watts (4.75 dBW)Max power 130 watts (21.25 dBW)Impeda ice 4 ohmsDriver size 6" x 9"

Configuration 2 -wayResponse 30 Hz to 25 kHz, ±4 dB re 96 dB

SPL at 1 meter at 1 wattMin power 3 watts (4.75 dBW)Max power 80 watts (19 dBW)Impedance 4 ohmsDriver size 6" x 9"Magnet 20 oz.Mounting Flush/SurfaceFeatures Chromed cast frame; 11/2" voice

Audio Pro Sterc :-ompo lents

No compromise soundfor no compromise 1111

people: audio pro

0 Subvioofer B2-50 fcrtight clean, powerful bass,flat down to the limit o' 0hearing (20 Hz). Comes complete with built-in amplifierand very versatile crossove filter.

Q &@ BlamplIfied A4-14 full range speaker with built-insubvs.00fer plus unique room -effect compensating controls.Do not let its small size fool you-its sound is gigantic.Tight, clean bass, flat to 30 Hz. Midrange and treble clean andopen with exceptional stereo imaging.

Receiver TA -150. "All too often, equipment that boasts . .

sophisticated control techniques falls down when it comes tosound. The TA -150 is a brillant exception."'Rewev. by Falpne Neill. June 1979 issJe of Australian

Hear the no compromise sound of Audio Proequipment at dealers nationwide.

AdinkCall TOLL FREE 800-638-0228 "or name and address ct Audio Pro dealersin your area; Maryland residents call coliecl 301-459-3232. Or, if you'd like,write directly to: Audio PrD. 4720-0 Boston Way, Lanham, MD 20801.

1980 Edition

CIRCLE 4 DE READER- 3ER ./ICE CARD

1 1.5

SAVE!MONEY TIME FREIGHTIs, QUALITY STEREO EQUIPMENT

AT LOWEST PRICES.

YOUR REQUEST FOR QUOTA-TION RETURNED SAME DAY

lcFACTORY SEALED CARTONS-GUARANTEED AND INSURED

SAVE ON NAME BRANDS LIKEAKAI PIONEERR.I.C. SANSUIDUAL SONYKENWOOD TEACMARANTZ TECHNICSAND MORE THAN 50 OTHERS

BUY THE MODERN WAYBY MAIL-FROM

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Chicago, Illinois 60611312-664-0020


8 IMPORTANT REASONS WHYMORE PEOPLE BUY TOPQUALITY EQUIPMENT FROMINTERNATIONAL HI-FI THAN ANYOTHER MAIL ORDER COMPANY

MORE THAN 80,000CUSTOMERS NATIONWIDE

1. Guaranteed lowest price ... you pay sameprice many dealers pay.

2. No -risk, no -deposit ... phone ordersshipped C.O.D. or Credit Card.

3. Same day shipping when ordered by 1 p.m.4. Seven audio advisors provide professional

help for the inexperienced buyer.5. Fully insured shipments plus full

manufacturers' warranty.6. Exclusive "no lemon" guarantee.7. Fully staffed customer service department.6. Over 70 top name brands ... equipment

most mail order and discountdealers Can't supply.

CALL NOW

(301) 488-9600Mon. -Fri. 9-9, Sat. 9-4

Write for: Brochure with prices and linesTips on buying by mail

InternationalHi-Fi DistributorsMoravia Center

Industrial Park. Dept BG-S

Baltimore, Maryland 21206

coil; biampable; waterproof construction; 5 yearwarranty; hardware included

K-6022Price $100Dimensions 61hH x 6I/2W x 21/2DConfiguration 2 -wayResponse 40 Hz to 25 kHz, +4 dB re 94 dB

SPL at 1 meter at 1 wattMin power 3 watts (4.75 dBW)Max power 80 watts (19 dBW)Impedance 4 ohmsDriver size 6"Magnet 20 oz.Mounting Flush/SurfaceFeatures Chromed cast frame; 11/2" voicecoil; biampable; waterproof construction; 5 yearwarranty: hardware included

K-5722Price $100Dimensions 71/4H x 5W x 31/2DConfiguration 2 -wayResponse 40 Hz to 25 kHz, +4 dB re 94 dB

SPL at 1 meter at 1 wattMin power 3 watts (4.75 dBW)Max power 80 watts (19 dBW)Impedance 4 ohmsDriver size 5" x 7"Magnet 20 oz.Mounting Flush/surfaceFeatures Chromed cast frame; 11/2" voicecoil; biampable; waterproof construction; 5 -yearwarranty; hardware included

KMT-3542Price $100Dimensions 33/4H x 5W x 2DConfiguration 2 -way midrange/tweeterResponse 200 Hz to 25 kHz, +4 dB re 93 dB

SPL at 1 meter at 1 wattMin power 3 watts (4.75 dBW)Max power 130 watts (21.25 dBW)Impedance 4 ohmsDriver size 31/2"

Mounting SurfaceFeatures Designed to match subwoofers K-6941, K-6921, K-6041, K-6021; protection circuitLED power indicators; built-in crossover; biampa-ble; 5 -year warranty; hardware included

K-6021Price $75Dimensions 61/2H x 61/2W x 2 3/5DConfiguration SubwooferResponse 40 Hz to 2 kHz, +3 dB re 93 dB

SPL at 1 meter at 1 wattMin power 3 watts (4.75 dBW)Max power 90 watts (19.5 dBW)Impedance 4 ohmsDriver size 6"Magnet 20 oz.Mounting Flush/surfaceFeatures Chromed cast frame; 11/2" voicecoil, waterproof construction 5 -year warranty;hardware included


ULTRALINEARUltralinear LoudspeakersDiv. Solar Audio Products, Inc.3228 E. 50th St.Los Angeles, Calif. 90058

M-16Price $199.95Dimensions 73/4H x 51/4W x 4 5/8DConfiguration 2 -wayResponse 53 Hz to 23 kHzMin power 5 watts (7 dBW)Max power 50 watts (17 dBW)

116

Impedance 4 to 8 ohmsDriver size 41/2" x 1"Magnet 24 oz.

M-12Price $149.95Dimensions 73/4H x 5I/4W x 4 5/8DConfiguration 2 -wayResponse 53 Hz to 18 kHzMin power 3 watts (4 75 dBW)Max power 40 watts (16 dBW)Impedance 4 to 8 ohmsDriver size 41/2" x 21/2"Magnet 24 oz

VERITWald Sound, Inc.11131 Dora St.P.O. Box 1085Sun Valley, Calif. 91352

Micro -25Price $59Dimensions 6H x 6W x 6DConfiguration Full rangeResponse 80 Hz to 12 kHz, +5 dB re 93 dB

SPL at 1 meter at 1 watt; 80 Hz to12 kHz, +8 dB in automobile

Mm power 5 watts (5 dBW)Max power 25 watts (14 dBW)Impedance 4 to 8 ohmsDriver size 41/2"

Magnet 10 ozMounting SurfaceFeatures Automotive and home speaker;11/2 wide mounting bracket; 3 knobs; push termi-nal "5" cup

VISONIK DAVIDVisonik of America, Inc.701 Heinz Ave.Berkeley, Calif. 94710

W-600Price $130 (with M-6 mounting kit)Dimensions 71/2H x 83/4W x 5DConfiguration SubwooferResponseMm powerImpedanceDriver sizeMagnetMountingFeatures

40 Hz to 160 kHz, -4 dB70 watts (18.5 dBW)4 ohms7"

67 oz.

FlushOptional enclosure

D-5000Price $140 each (with bracket)Dimensions 63/4H x 41/4W x 41/40Configuration 2 -wayResponse 50 Hz to 25 kHz, +4, -8 dB re 85

dB SPL at 1 meter at 1 wattMin power 10 watts (10 dBW)Max power 50 watts (17 dBW)Impedance 4 ohmsDriver size 4" x 1"Mounting SurfaceFeatures Recommended for use with A-301auto amplifier or AS -1 autosub system

D-4000Price $110 (optional bracket, $10)Dimensions 41/4H x 63/4W x 41/4DConfiguration 2 -wayResponse 50 Hz to 22 kHz re 84 dB SPL at 1

meter at 1 wattMin powerMax powerImpedance 4 ohmsDriver size 4" x 1"Mounting SurfaceFeatures Uniquely proportioned enclosureallows wide variety of placement possibilities

10 watts (10 dBW)50 watts (17 dBW)

High Fidelity's Buying Guide to Speaker SystemsCIRCLE 16 ON READER -SERVICE CARD

Introducing the AvidModel 110 MinimumDiffraction Loudspeaker.

The New ReferenceStandard Under $150.Utilizing the innovative designtechniques which have made ourrevolutionary line of loudspeakers sopopular, Avid introduces a compactMinimum Diffraction LoudspeakerTMfor less than $150.

Its performance characteristicsare so superior for the price, that theModel 110 establishes a referencestandard that challenges comparison.

Overall system response (48 Hzto 20 kHz ± 3 dB) is truly exceptionalfor a speaker in this price range, andfew loudspeakers in its class offer88 dB efficiency along with 100 -wattpower handling capability.

Avid builds its own drivers tomeet the specific design objectives ofeach system, and the Model 110 is noexception.

Power handling of the 1 -inchsoft dome tweeter is achieved with adesign incorporating magnetic fluidsand a high -temperature voice coil.Avid's proprietary cone treatmenttechniques enable the 8 -inch wooferto roll off mechanically, eliminatingthe need for an electronic crossover.

The Model 110 is a totally inte-grated design yielding a level of per-formance usually found only in themost expensive loudspeaker systems.

For complete technical informa-tion on the new Model 110, writeAvid Corporation, 10 Tripps Lane,Fast Providence, RI 02914.

UnboxedSound

AVIDThe careful integration of specialengineered Optimum DispersionCouplers' and solid front grillpanels with rolled edge designsignificantly reduces unwantedcabinet diffraction effects.

Feedback Causes:

Feedback Cure:DISCWASHER®

DiscFoot.Hi -Technology

Turntable Isolation System Works in combination with existing feet for dramatic reduction of feedback.

Isolates better than original or "replacement" feet.

Home environments can "upset" aturntable by feeding back bothspeaker and footfall vibrations.Acoustic isolation of a turntableinvolves the complex variables ofturntable weight, room/floorconditions and audio system place-ment. The Discwasher DiscFoot hasbeen specifically designed to success-fully isolate most turntables in thehome environment.

The "Material" SolutionThe major components of theDiscwasher DiscFoot System arenew, "totally engineered" chemicalcomplexes that behave radicallydifferent than other plastic, rubber orspring systems. These proprietarycompounds are durable and precisein behavior, although difficult andexpensive to synthesize. Laboratoryand real -world tests justify the use ofthese unusual materials in theDiscFoot System.

WITHOUT DISCFOOT

WITH DISCFOOT

The Telling TestThe oscilloscope photo shows theoutput of two identical audio systemson the same shelf with their stylicontacting the platters. The shelf isbeing struck by a rubber mallet. Thetop trace shows a turntable withabsorptive "replacement" feet. Thelower trace shows a DiscFoot Systemoperating in conjunction with theexisting turntable feet. Note thedramatic (tenfold) improvement inshock and feedback isolation.

The DiscFoot System contains fourisolation feet, four platform caps, fourfurniture -protecting sheets and fourspecial damping pads (to adaptDiscFoot units to certain turntables.)Additional single DiscFoot units areavailable for turntables weighing over22 lbs. The system costs $22.

MDiscFootDiscwasher DiscFoot can be found ataudio dealers interested in preservingyour music.

discwasher, inc.1407 N. Providence Rd.Columbia, Missouri 65201


brand-new specs and prices on 1,200 speakers buying … · sentially, you have five ways you can...

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