SRS1500ACTIVE SUBWOOFERSYSTEM USER’S MANUAL

CONCEIVED, DESIGNED, AND MANUFACTURED BY MACKIE DESIGNS INC, WOODINVILLE, WA, USA AND MACKIE EUROPE • MADE IN USA • COPYRIGHT ©1999 • THE FOLLOWING ARE TRADEMARKS OR REGISTERED TRADEMARKS OF MACKIE DESIGNS INC.:

"MACKIE", AND THE "RUNNING MAN" FIGURE • PATENT PENDING

SERIAL NUMBER MANUFACTURING DATE

RISK OF ELECTRIC SHOCKDO NOT OPEN

REPLACE WITH THE SAME TYPE FUSE AND RATING.DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE

UTILISE UN FUSIBLE DE RECHANGE DE MÊME TYPE.DEBRANCHER AVANT DE REMPLACER LE FUSIBLE

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.

CAUTION

AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIR

POWERPROTECTION

THRU(FULL RANGE OUTPUT)

HIGH PASS(MID/HIGH FREQ)

OUTPUT

SUBWOOFERCONTROLFULL RANGE

INPUT

PARALLEL

120Hz

ON

OFF

NORMAL

REV 180

PHASE

SRS1500ACTIVE SUBWOOFER

120 VAC 60HZ 350W

POWER

L

R

L

R

MID/HIGHACTIVE

SPEAKERS

MID/HIGHACTIVE

SPEAKERS

SUBWOOFERLEVEL

(+4dBu )NORMAL

+15OO

SRS1500SRS1500SRS1500

DUAL SUBWOOFER APPLICATION: SINGLE SUBWOOFER APPLICATION:

IN OUT

R

BALANCEDLINE OUTPUTS

BALANCEDLINE OUTPUTSLR

IN

SRM450

LSRM450

RSRM450

LSRM450

IN OUT

INININ

IN OUTIN OUT

LR

LR

LR

LR

A. PLUG THE LEFT SUBWOOFER'S LEFT HIGH PASS OUTPUT INTO THE LEFT SPEAKER'S INPUT.

B. PLUG THE RIGHT SUBWOOFER'S RIGHT HIGH PASS

OUTPUT INTO THE RIGHT SPEAKER'S INPUT.

A. PLUG THE SUBWOOFER'S LEFT HIGH PASS OUTPUT INTO THE LEFT SPEAKER'S INPUT.

B. PLUG THE SUBWOOFER'S RIGHT HIGH PASS

OUTPUT INTO THE RIGHT SPEAKER'S INPUT.

ACTIVE

2

CAUTION AVISRISK OF ELECTRIC SHOCK

DO NOT OPENRISQUE DE CHOC ELECTRIQUE

NE PAS OUVRIR

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCKDO NOT REMOVE COVER (OR BACK)

NO USER-SERVICEABLE PARTS INSIDEREFER SERVICING TO QUALIFIED PERSONNEL

ATTENTION: POUR EVITER LES RISQUES DE CHOCELECTRIQUE, NE PAS ENLEVER LE COUVERCLE. AUCUN

ENTRETIEN DE PIECES INTERIEURES PAR L'USAGER. CONFIERL'ENTRETIEN AU PERSONNEL QUALIFIE.

AVIS: POUR EVITER LES RISQUES D'INCENDIE OUD'ELECTROCUTION, N'EXPOSEZ PAS CET ARTICLE

A LA PLUIE OU A L'HUMIDITE

The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated"dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. Le symbole éclair avec point de flèche à l'intérieur d'un triangle équilatéral est utilisé pour alerter l'utilisateur de la présence à l'intérieur du coffret de "voltage dangereux" non isolé d'ampleur suffisante pour constituer un risque d'éléctrocution.

The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. Le point d'exclamation à l'intérieur d'un triangle équilatéral est employé pour alerter les utilisateurs de la présence d'instructions importantes pour le fonctionnement et l'entretien (service) dans le livret d'instruction accompagnant l'appareil.

7. Heat — This Mackie product should be situated away from heatsources such as radiators, or other devices which produce heat.

WARNING: The heatsink may reach high temperatures duringstandard use. To ensure proper operation, allow a minimum of 6inches of clearance from the heatsink surface and adequateventilation.

8. Power Sources — This Mackie product should be connected to apower supply only of the type described in these operationinstructions or as marked on this Mackie product.

9. Power Cord Protection — Power supply cords should be routedso that they are not likely to be walked upon or pinched by itemsplaced upon or against them, paying particular attention to cords atplugs, convenience receptacles, and the point where they exit thisMackie product.

10. Object and Liquid Entry — Care should be taken so thatobjects do not fall into and liquids are not spilled into this Mackieproduct.

11. Damage Requiring Service — This Mackie product should beserviced only by qualified service personnel when:

A. The power-supply cord or the plug has beendamaged; or

B. Objects have fallen, or liquid has spilled into thisMackie product; or

C. This Mackie product has been exposed to rain; or

D. This Mackie product does not appear to operatenormally or exhibits a marked change in performance;or

E. This Mackie product has been dropped, or its chassisdamaged.

12. Servicing — The user should not attempt to service thisMackie product beyond those means described in this operatingmanual. All other servicing should be referred to the Mackie ServiceDepartment.

13. To prevent electric shock, do not use this polarized plug with anextension cord, receptacle or other outlet unless the blades can befully inserted to prevent blade exposure.

Pour préevenir les chocs électriques ne pas utiliser cette fichepolariseé avec un prolongateur, un prise de courant ou une autresortie de courant, sauf si les lames peuvent être insérées à fondsans laisser aucune pariie à découvert.

14. Grounding or Polarization — Precautions should be taken sothat the grounding or polarization means of this Mackie product isnot defeated.

15. This apparatus does not exceed the Class A/Class B (whicheveris applicable) limits for radio noise emissions from digital apparatusas set out in the radio interference regulations of the CanadianDepartment of Communications.

ATTENTION —Le présent appareil numérique n’émet pas debruits radioélectriques dépassant las limites applicables auxappareils numériques de class A/de class B (selon le cas) prescritesdans le règlement sur le brouillage radioélectrique édicté par lesministere des communications du Canada.

SAFETY INSTRUCTIONS1. Read Instructions — All the safety and operation instructionsshould be read before this Mackie product is operated.

2. Retain Instructions — The safety and operating instructionsshould be kept for future reference.

3. Heed Warnings — All warnings on this Mackie product and inthese operating instructions should be followed.

4. Follow Instructions — All operating and other instructionsshould be followed.

5. Water and Moisture — This Mackie product should not be usednear water – for example, near a bathtub, washbowl, kitchen sink,laundry tub, in a wet basement, near a swimming pool, swamp orsalivating St. Bernard dog, etc.

6. Ventilation — This Mackie product should be situated sothat its location or position does not interfere with its properventilation. For example, the Component should not be situatedon a bed, sofa, rug, or similar surface that may block anyventilation openings, or placed in a built-in installation such as abookcase or cabinet that may impede the flow of air throughventilation openings.

PORTABLE CART WARNING

Carts and stands - TheComponent should be usedonly with a cart or standthat is recommended bythe manufacturer.A Component and cartcombination should bemoved with care. Quickstops, excessive force, anduneven surfaces may causethe Component and cartcombination to overturn.

WARNING — To reduce the risk of fire orelectric shock, do not expose this appliance to

rain or moisture.

3

Lend Me Your EarsExposure to extremelyhigh noise levels may causepermanent hearing loss. In-dividuals vary considerablyin susceptibility to noise-

induced hearing loss, but nearly everyone willlose some hearing if exposed to sufficiently in-tense noise for a period of time. The U.S.Government’s Occupational Safety and HealthAdministration (OSHA) has specified the per-missible noise level exposures shown in thischart.

According to OSHA, any exposure in excessof these permissible limits could result in somehearing loss. To ensure against potentiallydangerous exposure to high sound-pressurelevels, it is recommended that all personsexposed to equipment capable of producingthese levels use hearing protectors while thisunit is in operation. Ear plugs or protectors inthe ear canals or over the ears must be wornwhen operating this amplification system inorder to prevent a permanent hearing loss ifexposure is in excess of the limits set forth here.

Duration Per Day Sound Level dBA, Typical In Hours Slow Response Example

8 90 Duo in small club6 924 95 Subway Train3 972 100 Very loud classical music

1.5 1021 105 Patrice screaming at Ron about deadlines

0.5 110 0.25 or less 115 Loudest parts at a rock concert

CONTENTSSAFETY INSTRUCTIONS .......................................... 2INTRODUCTION....................................................... 3REAR PANEL DESCRIPTION .................................... 4HOOKUP DIAGRAMS............................................... 5CONNECTIONS........................................................ 6PLACEMENT ............................................................ 6AC POWER .............................................................. 7

THERMAL CONSIDERATIONS .................................. 7SERVICE INFORMATION .......................................... 7

Warranty Service ............................................... 7Troubleshooting ................................................. 7Repair ............................................................... 9

SRS1500 SPECIFICATIONS ................................... 10Architects and Engineers Specifications ........... 11

Don’t forget to visit our website at www.mackie.comfor more information about this and other Mackie products.

The SRS1500can produce a

maximum SPL of123 dB @ 1m

INTRODUCTIONM•1400i and C300s. A Phase switch gives youthe option of reversing the polarity of the signalto the full-range speakers by 180º. A SubwooferLevel control allows you to adjust the balance be-tween the subwoofer and the full-range speakers.

The built-in amplifier produces 600 watts ofcontinuous power. The amplifier module sits ona mammoth heatsink that eliminates the need forfans, dramatically extending life expectancy, andeliminating maintenance cycles. A tremendousbenefit of having the amplifier located within thesubwoofer cabinet is that the SRS1500 functionsas a system, optimizing acoustic, electronic, andmechanical designs to achieve the highest level ofperformance and value.

The cabinet is constructed with 18mm thickmulti-layered birch plywood. Carrying handlesare integrated into each side for easy loadingand transport.

Part No. 820-187-00 Rev. D 06/01©2001 Mackie Designs Inc. All Rights Reserved. Printed in Italy.

Thank you for choosing Mackie Designs’active sound reinforcement speaker systems.

The SRS1500 is a high output activesubwoofer system. It features a high-precision15˝ transducer combined with applicationspecific amplifier technology. The system iscomposed of a single, compact subwoofer cabinetwith built-in control and amplifier electronics.

Connecting and setting up the SRS1500 is abreeze. It accepts a stereo line-level signal viafemale XLR input jacks. Male XLR Thru jacksare provided for daisy-chaining the signal toadditional SRS1500 cabinets. The built-incrossover separates the low frequencies fromthe high frequencies, and routes the high fre-quencies to the male XLR high-pass outputjacks. Connect these to the inputs of full-rangeactive speakers such as the Mackie DesignsSRM450s, or to an amplifier powering a pair ofpassive speakers such as the Mackie Designs

4

REAR PANEL DESCRIPTION

POWER SwitchUse this switch to turn the SRS1500 on

and off. Make sure the signal source’s levelcontrol is turned down before you turn it on.

AC ReceptacleThis is where you connect the AC line-

cord to provide AC power to the SRS1500’sbuilt-in power amplifiers. Plug the linecordinto an AC socket properly configured foryour particular model.

PROTECTION IndicatorThe SRS1500 has a built-in limiter and

thermal protection circuit that protects theamplifier and transducer. The PROTECTIONindicator lights when the limiter is activated.If the protection indicator blinks frequentlyor lights continuously, turn down the signalsource’s level control until the protection in-dicator only blinks occasionally.

If the internal temperature should exceeda safe operating level, the signal is mutedto allow the amplifier to cool. When thetemperature cools to a safe level once again,the thermal protection circuit deactivatesand normal operation continues.

Note: Activation of the thermal protec-tion circuit is an indication that you shouldtake steps to avoid continued thermal prob-lems. See “Thermal Considerations” on page 7.

POWER IndicatorWhen the POWER switch is turned on

and the linecord is connected to an activeAC power supply, this indicator lights greento let you know that you’re ready to rockand roll. The cool blue LED on the front ofthe cabinet works in the same way.

FULL RANGE INPUTThese are female XLR-type connectors

that accept a balanced line-level signal froma mixing console or other signal source.

THRU (FULL RANGE OUTPUT)These are male XLR-type connectors

that produce exactly the same signal that isconnected to the FULL RANGE INPUT jack.Use it to daisy-chain several SRS1500s to-gether off the same signal source.

HIGH PASS (MID/HIGH FREQ) OUTPUTThese are male XLR-type connectors

that produce the frequencies above 120Hz.Connect these to a pair of full-range activespeakers or to an amplifer/passive speakercombination. The SRS1500 reproduces thefrequencies below 120Hz.

SUBWOOFER LEVEL ControlThis adjusts the subwoofer level. The

center detent position provides 15 dB ofheadroom with a nominal +4 dBu inputsignal. Use this as a starting point for set-ting the balance between the subwooferand the main speakers.

PHASEThis switch reverses the polarity of the

signal at the HIGH PASS OUTPUT jacks.Depending on the placement of theSRS1500 subwoofer relative to the full-range speakers, you may get a betterlow-frequency response in the room if youreverse the polarity of the signal. Experi-ment with this switch to determine whichposition sounds best.

POWERPROTECTION

THRU(FULL RANGE OUTPUT)

HIGH PASS(MID/HIGH FREQ)

OUTPUT

SUBWOOFERCONTROLFULL RANGE

INPUT

PARALLEL

120Hz

ON

OFF

NORMAL

REV 180

PHASE120 VAC 60HZ 350W

POWER

L

R

L

R

SUBWOOFERLEVEL

(+4dBu )NORMAL

+15OO

IN OUT

5

HOOKUP DIAGRAMS

PowerCord

PoleMount

Line-LevelMid/HighOut Left

Line-LevelMid/HighOut Right

FullRangeRight

FullRangeLeft

PowerCords

SRS1500Plays the LowFrequencies

SRM450Plays the Mid and High Frequencies

1202-VLZPRO

PowerCord

PoleMount

PowerCords

SRS1500Plays the LowFrequencies

SRM450Plays the Mid and High Frequencies

ACTIVE ACTIVE

StereoPower

AmplifierPole

MountPoleMount

Line-LevelHi-Pass Out

FullRange

FullRange

PowerCord

PowerCord

SRS1500Plays the LowFrequencies

SRS1500Plays the LowFrequencies

C300Plays the Mid andHigh Frequencies

C300Plays the Mid and High Frequencies

ACTIVE ACTIVE

1202-VLZPRO

2 SRS1500S WITH 2 SRM450S 2 SRS1500S WITH STEREO AMPLIFIER AND 2 C300S

Line-LevelHi-PassOut L

Line-LevelHi-PassOut R

FullRange

FullRange

SRS1500Plays the LowFrequencies

SRM450Plays the Mid and High Frequencies

PowerCord

PowerCord

PowerCord

SRM450Plays the Mid and High Frequencies

ACTIVE

1202-VLZPRO

FullRange

FullRange

SRS1500Plays the LowFrequencies

C300Plays the Mid and High Frequencies

1202-VLZPRO

PowerCord

PowerCord

C300Plays the Mid and High Frequencies

Stereo PowerAmplifier

Line-LevelHi-Pass Out

ACTIVE

1 SRS1500 WITH STEREO AMPLIFIER AND 2 C300S1 SRS1500 WITH 2 SRM450S

6

PLACEMENTThe SRS1500 subwoofer is designed to

sit on the floor or on sturdy stands.A socket is provided on the top of the

SRS1500 for mounting the MackieSRM450 active speaker. Use the optionalMackie speaker mounting pole to mountthe SRM450 on the SRS1500 (see HookupDiagram on page 5).

As with any poweredcomponents, protectthem from moisture. Ifyou are setting them upoutdoors, make sure theyare under cover if youexpect rain.

CONNECTIONS

Balanced XLR Connectors

The SRS1500 has two female XLR in-puts that accept a balanced line-level signal.When connecting a balanced signal, be sureit’s wired per AES (Audio Engineering So-ciety) standards:

XLRHot (+) Pin 2Cold (–) Pin 3Shield (Ground) Pin 1

If connecting an unbalanced signal to theSRS1500 balanced input, be sure that thesignal high (hot) connection is wired to Pin 2and the unbalanced ground connection iswired to the low and the ground connec-tions of the balanced input (Pins 3 and 1).If there are ground-loop problems, try con-necting the unbalanced ground connectiononly to the input low connection (Pin 3),and leaving the input ground connectiondisconnected.

Unbalanced Male XLR Connector

There are also four male XLR connec-tors labeled THRU (FULL RANGE OUTPUT)and HIGH PASS (MID/HIGH FREQ) OUTPUT.These are also wired according to theAES standard.

The THRU output connectors allow youto connect more than one SRS1500 to yoursystem. Simply plug the signal source (i.e.,mixer output) into the first speaker’s FULLRANGE INPUT jacks, and patch that speak-er’s THRU jacks to the next speaker’sINPUT jacks, and so on, daisy-chainingmultiple speakers.

The THRU jack is wired straight from theFULL RANGE INPUT connector — there isno electronic circuitry between — so thesignal coming out of the THRU jack is ex-actly the same as the signal going in.

The HIGH PASS OUTPUT jacks provide aline-level signal of the frequencies above120Hz that you connect to a pair of activespeakers (or to a stereo amplifier powering apair of passive speakers). See the diagramson the rear panel of the SRS1500 for addi-tional connection information.

7

AC POWERBe sure the SRS1500 is plugged into an

outlet that is able to supply the correct volt-age specified for your model. If the voltageshould drop below 97% of the specified linevoltage, the built-in amplifiers will nolonger be able to supply rated power. (Theywill continue to operate down to 80% ofthe rated line voltage, but won’t reach fullpower, resulting in lower headroom.)

Be sure the electrical service can supplyenough amperage for all the componentsconnected to it.

We recommend that a stiff (robust) sup-ply of AC power be used because theamplifiers place high current demands onthe AC line. The more power that is avail-able on the line, the louder the speakers willplay and the more peak output power willbe available for cleaner, punchier bass. Asuspected problem of “poor bass perfor-mance” is often caused by a weak ACsupply to the amplifiers.

Never remove theground pin on the powercord of the SRS1500 orany other component.This is very dangerous.

THERMALCONSIDERATIONS

The SRS1500 has a powerful 600 wattamplifier built-in. As amplifiers produceheat, it is important to dissipate the heat asquickly as possible. This results in increasedreliability and longevity for the amplifier.

The amplifier module is mounted on alarge heatsink, which is cooled by convec-tion where cool air is drawn through it’sfins, carrying the heat away. In order forthis convection cooling to work efficiently,it is important to provide adequate airspacebehind the loudspeaker. When you positionthe SRS1500, we recommend leaving atleast six inches of air space behind it.

In the unlikely event of the amplifieroverheating, a built-in thermal switch willactivate, which mutes the signal. When theamplifier has cooled down to a safe operat-

SERVICE INFORMATION

Warranty ServiceIf you think your subwoofer has a prob-

lem, please do everything you can toconfirm it before calling for service, includ-ing reading through the followingTroubleshooting section. Doing so mightsave you from being deprived of yourMackie loudspeaker.

Of all Mackie products returned for ser-vice (which is hardly any at all), many arecoded “CND” — Could Not Duplicate—which usually means the problem lay some-where else in the system. The followingtroubleshooting tips may sound obvious,but here are some things you can check:

Troubleshooting

No power• Our favorite question: Is it plugged in?

Make sure the AC outlet is live (checkwith a tester or lamp).

• Our next favorite question: Is the POWERswitch on? If not, try turning it on.

• Is the POWER LED on the rear panelglowing green? If not, make sure the ACoutlet is live. If so, refer to “No sound”next.

• The internal AC line fuse may be blown.This is not a user serviceable part. Ifyou suspect the AC line fuse is blown,please see the “Repair” section on page 9.

ing temperature, the thermal switch resetsitself, and the SRS1500 resumes normaloperation.

If the thermal switch activates frequently,try turning down the level control a notchor two on the mixing console (or other sig-nal source) or on the subwoofer itself toavoid overheating the amplifiers.

If the temperature in the room is toohigh, it could cause the amplifier to over-heat. In this case, you should try aiming afan at the rear panel to move more airacross the heatsink panel.

8

No sound• Is the input LEVEL control for the input

source or the subwoofer turned all theway down? Verify that all the volumecontrols in the system are properlyadjusted.

• Is the signal source working (and makingunion scale)? Make sure the connectingcables are in good repair and securelyconnected at both ends. Make sure theoutput volume (gain) control on themixing console is turned up sufficientlyto drive the inputs of the speaker.

• Make sure the mixer does not have aMute on or a Processor loop engaged. Ifyou find something like this, make surethe volume/gain is turned down beforedisengaging the offending switch.

• Is the thermal protection circuit activated?Make sure there is at least six inches offree space behind the SRS1500.

Poor bass performance• Check the polarity of the connections

between the mixer and the loudspeak-ers. You may have your positive andnegative connections reversed at oneend of one cable, causing one loud-speaker to be out-of-phase.

• Try switching the PHASE switch on therear panel. This affects the polaritybetween the full-range speakers and theSRS1500 and may improve the low-frequency response.

Poor sound• Is it loud and distorted? Make sure that

you’re not overdriving a stage in thesignal chain. Verify that all level controlsare set properly.

• Is the input connector plugged com-pletely into the jack? Be sure allconnections are secure. It’s a good ideato periodically clean all electricalconnections with a non-lubricatingelectrical contact cleaner.

Noise• Make sure all connections to the active

loudspeakers are good and sound.• Make sure none of the signal cables are

routed near AC cables, power trans-formers, or other EMI-inducing devices.

• Is there a light dimmer or other SCR-based device on the same AC circuit asthe SRS1500? Use an AC line filter orplug the SRS1500 into a different ACcircuit.

Hum• Try disconnecting the cable connected

to the INPUT jack. If the noise disap-pears, it could be a “ground loop,”rather than a problem with theSRS1500. Try some of the followingtroubleshooting ideas:

• Use balanced connections throughoutyour system for the best noise rejection.

• Whenever possible, plug all the audioequipment’s linecords into outlets whichshare a common ground. The distancebetween the outlets and the commonground should be as short as possible.

9

REPAIRService for the SRS1500 is available only

from one of our authorized domestic servicestations or at the factory service center lo-cated in Whitinsville, Massachusetts. Serviceoutside the United States can be obtainedthrough local dealers or distributors.

If your SRS1500 needs service, pleasefollow these instructions:1. Review the preceding troubleshooting

suggestions. Please.2. Call Tech Support at 1-800-258-6883,

7am to 5pm PST, to explain the problemin detail. They will ask you all sorts ofimpertinent questions in the hope ofsorting out the problem. If it appearsthat the SRS1500 needs repair, requestan RA (Return Authorization) number.Have your subwoofer’s serial numberready. You must have an RA numberbefore you can obtain service at thefactory or an authorized service center.

3. Keep this user’s manual. We don’t needit to repair the subwoofer.

4. Pack the subwoofer in its originalpackaging, including protective wrap,endcaps, and box. This is very impor-tant. When you call for the RA number,please let Tech Support know if youneed new packaging. Mackie is notresponsible for any damage that occursdue to non-factory packaging.

5. Include a legible note stating your name,shipping address (no P.O. boxes),daytime phone number, RA number,and a detailed description of the prob-lem, including how we can duplicate it.

6. Write the RA number in BIG PRINTon top of the box.

7. Ship the subwoofer to us. We recom-mend United Parcel Service (UPS). Wesuggest insurance for all forms ofcartage. Ship to this address:

Mackie DesignsSERVICE DEPARTMENT

One Main StreetWhitinsville, MA 01588

8. We’ll try to fix the subwoofer in three tofive business days. Ask Tech Supportfor current turnaround times when youcall for your RA number. We normallysend everything back prepaid using UPSORANGE (Third Day Air). However, ifyou rush your subwoofer to us by airshipment, we’ll treat it in kind byplacing it on the ‘priority’ shelf. Once itis repaired, we’ll ship it back the sameway in which it was received. Thisparagraph does not necessarily apply tonon-warranty service.

10

SRS1500 SPECIFICATIONSSystem Specifications

Frequency Range (–10 dB)40Hz–120Hz

Frequency Response (–3 dB)45Hz–120Hz

Maximum SPL @ 1m 123 dBPeak Output @ 1m 126 dBCrossover Frequency 120Hz (12 dB/octave)Input Type Balanced differentialInput Impedance 50k ohmsInput Protection Level protectedThermal Protection Input stage muting,

auto-reset

Transducer SpecificationsLow-Frequency Transducer

Diameter 15˝ (381mm)Voice Coil Diameter 3.0˝ (75mm)Power Handling 350 watts rms

Power AmplifierLow-Frequency Power Amplifier

Rated Power 600 watts RMSRated THD < 0.05%Cooling Passive

Line Input PowerUS 120V, 60HzEurope 230V, 50Hz

Physical PropertiesHeight 23.5˝ (597mm)Width 17.2˝ (436mm)Depth 23.7˝ (603mm)Weight 88.25 lbs. (40.11kg)Enclosure 18mm thick multi-layered baltic

birch woodEnclosure Geometry

RectangularMounting Methods

Floor mount only

DisclaimerSince we are always striving to make our

products better by incorporating new and improvedmaterials, components, and manufacturing methods,we reserve the right to change these specifications atany time without notice.

“Mackie” and the “Running Man” figure aretrademarks or registered trademarks of MackieDesigns Inc.

All other brand names mentioned are trade-marks or registered trademarks of their respectiveholders, and are hereby acknowledged.

©2001 Mackie Designs Inc.All Rights Reserved.Printed in Italy.

FrequencyResponse

11

ARCHITECTS AND ENGINEER’S SPECIFICATIONS

Dimensions

The active subwoofer loudspeaker systemshall incorporate one 15-inch low fre-quency (LF) transducer mounted within anindividual enclosure. The enclosure shall beconstructed using multi-ply wood andtuned for optimum low frequency response.System frequency response shall vary nomore than ± 4 dB from 40 Hz to 120 Hzmeasured on axis. The loudspeaker shall in-corporate a low frequency amplifier systemcapable of delivering 600 watts rms over afrequency range of 30Hz to 150Hz. Theamplifier system shall be mounted on an

aluminum heat sink suspension mountedwithin the enclosure. The enclosure shallhave a rectangular shape and shall incorpo-rate two side handles on each side and a topmounted pole receptacle. The subwoofersystem will feature stereo XLR input con-nectors and stereo XLR loop through signalconnectors. There will be high pass stereooutput XLR connectors, a level control, aphase control, and “ON” and “PROTEC-TION” mode LED indicators.

The active subwoofer loudspeaker systemshall be the Mackie Designs SRS1500.

Some of thepeople at ourWoodinvi l le,

Washington factorywho helped

design, bui ld, sel l ,and support your

product.

Some of thepeople at ourWoodinvi l le,

Washington factorywho helped

design, bui ld, sel l ,and support your

product.

®

®

®

™

Mackie Designs Inc.Mackie Designs Inc.

16220 Wood-Red Rd. NE • Woodinville, WA 98072 • USA800/898-3211 • Outside the US: 425/487-4333

Fax: 425/487-4337 • www.mackie.comE-mail: sales@mackie.com