CAUTION

UTION: TO REDUCE THE RISK OF ELECTRI DO NOT REMOVE COVER

NO USER-SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL

Under FCC Rules, changes or modifications not expressly ap- proved by Shure Brothers Inc. could void your authority to operate this device.

The lightning flash with arrowhead symbol, with- in an equilateral triangle, is intended to alert the user to presence of un- insulated "dangerous voltage" within the pro- duct's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral tri- angle is intended to alert the user to the presence of important operating and maintenance (sew- icing) instructions in the literature accompanying the appliance.

USER'S GUlDE

HTS5OSW SUBWOOFER

CENTER FR(

HTSSOLKS LEFI', KIGHT. SURROLNI)

LOUDSPEAKER

HTSSOCF )hT SPEAKER

HOME THEATER REFERENCE SYSTEM COMPONENTS

t

SHURE HTS ACRA-VECTOR@* HOME THEATER REFERENCE SYSTEM

CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . General Description 6

. . . . . . . . . . . . . . . . . . . . . . . . . HTS Reference System 7 HTS5300 Decoder . . . . . . . . . . . . . . . . . . . . . . . . 7

. . . . . . . . . . . . . . . . . . . . . . . HTSSOSPA Amplifier 7 . . . . . . . . . . . . . . . . . . . . . . . . HTS5OCF Speaker 7 . . . . . . . . . . . . . . . . . . . . . . . . HTSSOLRS Speaker 8

. . . . . . . . . . . . . . . . . . . . . . HTS5OSW Subwoofer 8 . . . . . . . . . . . . . . . . . . . . . . . . Locating Speakers 8

. . . . . . . . . . HTS Reference System Interconnections 10 . . . . . . . . . . . . . . . . . . . Source to Decoder 10

Decoder to Amplifier and Speakers . . . . . . . . . 10 . . . . . . . . . . . . . . . . . Initial Setup and Operation 12

. . . . . . . . . . . . . . . . . . Pushbutton Controls 12 . . . . . . . . . . . . . . . . . . . . . Rotary Controls 12 . . . . . . . . . . . . . . . . . . . . . Graphic Display 13 . . . . . . . . . . . . . . . . . . . . . Remote Control 13 . . . . . . . . . . . . . . . . . . . . Remote Extender 13

. . . . . . . . . . . . . . . . . Mono Enhance Adjust 14 . . . . . . . . . . . . . . . . . . . . . . Balance and Phasing 14

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mixed System 14 . . . . . . . . . . . . . . . . . . . . . . . Locating Speakers 14

. . . . . . . . . . . . . . . . . . . . . . . . Interconnections 15 . . . . . . . . . . . . . . . . . . . Source to Decoder 15

Decoder to Amplifiers and Speakers . . . . . . . . 15 . . . . . . . . . . . . . . . . . . . . . . Balance and Phasing 16

. . . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . Program Material 18

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Specifications 18

*US Patents 4.696. 036 and 4.811. 019

SBGRE HTS ACRA-VECTORcR)* HOME THEATER SOliND

(:or~~ratul,tt~o~i\' \our Sliure il'l'S Acra lector " I-lome Tllcater Kefc.rcncc. i i rd~o >)\tern prov~de\ thc \torld's finest IIome I'1ic~;tter Souncl Yoour Iiome theatcr equ~pped with a Shure IITS l k f e r e n ~ e S \ \ t e n ~ \ill1 ;tchle\c the same real~sm and ~mmedlacj ot soiinti th,lt !lo11 hear In the ~ c r ) be\t motlon plcture theaters cclu~pl)~(l \ i l t l~ 1)olbj Stvrco ' *

For tlio4e nho re not tot'11I) hnllllar with 1)olh) Stereo. 1)olh) Surrountl, lcm-lector dccoillng, ant1 Horne Theater So~ind. sonic e\pl,ul,~t~onr follon

00 DOLBY STEREO** ticscrihcs a motion picture process. one part of ~vliich includes recording films \+ith tllrec front cli;rn~icls (Left, (kn t t r . Right) ant1 one rc;ir ( o r surrou~it l ) c11:tnncl. 'i'he I)olh!. Stereo theatcr encotling-tk'cocli~lg process uscs ;I mat1iematic;l1it1 coclc to con~hine the f i~ur autlio tracks into t\zo stereo t ~ ~ c b , then h;uh into the four original track (kno\+n as :I t -2--4 process for short). \lilllcn 1)olby Stereo filriis are transferreti to thc video format, the encoded sountl tracks are presenctl. iuitl are now c;~lletl 0U DOLBY SLRROL'ND.

ACKA-VECTOR 1)ECODING 'The p;~tcntcd Shure Escl~isive hcra-l'cctor Logic decoding

process LISCS logic C I I ~ I ; I I I C C I I I ~ ~ ~ circuits ivhicli recover tlie original fi)ur recortled channels tt.ith a high degree of separation het~vern adjaccnt cli;u~ncls. 'l'he :Icra-Vector l)ecoder cmulatcs the I)olh! Stereo thcatcr dccotler ;uid permits all listeners. ~iI iere\~er they are locatetl in the horiie theater, tc; cnjoy the tot:~l {heater eupericnce.

SIII'RE Ifl'S In ortlcr to ti~lly replicate tlie 1)oby Stereo theater experience

in the Sli~irc t1'i'S Ilome Theater, the Sliure II'TSi.300 1)rcotler provides in adtlition to ;\era-\'cctor logic enhancement:

'I'lie \title dynamic range and high signal-to-noise ratio ncccssar) for (banlatic contrast 'I'lie atIjust;cblc dela~y time recluirecl for tailoring to rooms of \.arious size Thc cuclusivc :\caustic Space (;enerator that immerses evcJn listener in the fill1 spatial field tvith a minimum number of surrountl spe;~kers 'I'hc suhuoofer output intcgral to tlie cre;ttion of mood and place.

HOME THEATER, WHAT YOU NEED

The Source I'rogram material from a 1)olhy Stereo Soura' (t:.g.. video

disc plajer, video tape player. stereo t\./;~uciio reccbivc:r) in which thr. original four-channcl audio recording lias been encotled or mixed docv~i to two stereo tracks is decotled and reprotluced by a Ilome Theater Sountl system.

The Room :\ common misconception is that a very large room is

requiretl to enjoy the re-creation of theater ;mibierice in the home. l'he Sl~ure H1'S process ;~lloivs all tlie enjoyment of ;I

theatrical perfornmance in a room of motiest size. I.argcr rooms, of course, are also highly suitable for hornc theater.

The Video .A realistic honie theatcr experience rnay be ;~chir\ahlc wit11

an ortlinan honir television screen in rooms of ordinary size. A projection tv is popular in 1;lrger rooms. In gcncfitl, the Ii~rgest screen practical for the room is preferretl.

The Audio In the movie theatcr a high performance audio system

contributes just as much as tlie large screen to the participatorj qu;~lity of the experience. To tluplicatc this quality in the home, the system must bc capable of producing high sound pressure levels with low distortion not only in the front channels but also in the surround channels nil the sulnvoofr~r ( o r low frerjuency) channel. :2 center ti-ont ch;~nnel loudspeaker is of great importance in maintaining proper audio perspecthre for all viewers.

In order to obtain the optinium listening experit:nce with a home theater audio system, it is important to select ;urnplificrs and loudspeakers that are capable of producing the required low distortion, high sound pressure levels. precise localization. ant1 fitlelity to the original source. Shure's IlTS Division has tieveloped such a system of matched components for a reference standarcl honie theater system. As a basis for tletertnining requirements for home theater, consider that the sound system in a modern movie theater is designed to generate maximum peak sound pressure levels of 108 dB SI'I, at an ideal viewing position.

THE SHURE HTS REFERENCE SYSTEM A number of Reference Systems can be constructed using

Shure HTS Theater Reference System Components. Please consult with your Authorized HTS Dealer in order to determine which Reference system best suits your specific needs. The system described below is ideal for rooms of average size. It consists of the following components:

1 Dolby Stereo Source 1 HTS5300 Acra-Vector Logic Decoder 3 HTSSOSPA Signal Processing Stereo Power Amplifiers 1 HTSSOCF Center Front Loudspeaker System 4 HTSSOLRS Loudspeakers 1 HTSSOSW Subwoofer Loudspeaker 1 Video display monitor or 'ITr 1 Switchable power strip with 6 (or more) sockets

HTS5300 ACRA-VECTOR LOGIC DECODER The Shure HTS Acra-Vector Logic Decoder incorporates such

additional features as the Shure-designed Acoustic Space Generator, true digital time delays that are user selectable for individual room size and layout, input level and balance controls, and a graphic readout of input signal strength at each channel. These constituents significantly enhance the home listening experience compared to rudimentary Surround processors. In fact, the combination of Acra-Vector decoding with Shure's Acoustic Space Generator provides, in a home space with front left, right and center speakers, and only two surround speakers, the same surround ambience that requires an array of eight to ten speakers in a theater.

The Shure HTS Reference System also incorporates a subwoofer loudspeaker for high-level low bass frequencies. Because the film sound mixers use very low-frequency audio as an integral part of the creation of mood and location, a subwoofer reinforces the theater illusion and intensifies the realism of the performance.

The HTS5300 is designed and built with meticulous attention to detail and highest quality components used throughout. One example of this philosophy of details is the use of gold-plated input and output connectors on the Decoder itself and on the supplied interconnecting cables.

HTSSOSPA SIGNAL PROCESSING AMPLIFIER The HTSSOSPA amplifier has been designed to complement

the Shure HTS Decoder and Shure HTS Loudspeakers. The HTSSOSPA amplifier has switch selectable Operational Modes in each of which the amplifier response matches each HTS speaker type.

For instance, in the LRS or CF modes, the amplifier output is full range and precisely complements the HTSSOLRS or HTSSOCF loudspeaker response respectively. On the other hand, when Channel 1 is in Operational Mode SW, amplifier output extends from 33 to 80 Hz to match the frequency response of the HTSSOSW Subwoofer. In addition, to further enhance its versatility, each channel of the HTSSOSPA amplifier also includes a "Flat" output mode, making it suitable for use with any loudspeaker.

In each channel, the HTSSOSPA includes a dynamically variabie limiter that continuously measures the input signal and shapes the response, depending on the Operational Mode selection, to protect against distortion caused by overexcursion of the speaker connected to that channel. An additional protection circuit prevents long term hard clipping. The latter circuit can be selectively disabled for each channel by pressing its Protection Defeat switch.

In each of its HTS-speaker-correlated operational modes, the wideband electronic response of the HTSSOSPA is tailored to match the particular HTS loudspeaker system selected (HTSSOCF, LRS, or SW). The design correlation between the amplifier output and the loudspeaker/crossover interaction, loudspeaker- to-room transfer function, and program-material-dependent loudspeaker output at the listener position in a typical Home Theater System has been achieved through extensive laboratory testing and in situ program listening.

Consequently, the HTSSOSPA offers the user an amplifier that is outstanding for high-quality audio/video theatrical presentations in the home as well as one that provides a unique experience in traditional multi-channel audio only listening.

Scrupulous care has been exercised in design and construction of the HTSSOSPA with highest quality components used throughout. Like the HTS5300, the HTSSOSI'A uses gold-plated RCA phono jacks and additional gold-plated five-way binding posts for loudspeaker output connectors.

HTSSOCF SPEAKER SYSTEM The HTSSOCF Center Front speaker is compatible with the

HTSSOSPA power amplifier. In a top quality home theater sound system, the loudspeaker used in the center front position is subject to the most rigorous performance demands in terms of power handling. The HTSSOCF meets those demands; its performance has been carefully matched to the HTSSOLRS Front Left and Right speakers in order to provide uniform response across the front sound stage with realistic pans and unparalleled fidelity. When the HTSSOSPA Amplifier is in the CF Operational Mode, the amplifier and speaker cut off at 80 Hz for a perfect match to the HTSSOSW Subwoofer; in the CFx Mode, the low- frequency rolloff point extends down to 60 Hz.

The HTSSOCF has two 6-1/2-inch low-frequency drivers and a single 1-inch soft fabric, damped dome high frequency driver, all equipped with heavyweight shielded double magnet systems to reduce interference with the tv picture. The two way third order/fourth order matched crossovers have impedance equalization and a response-shaping filter to optimize on- and off-axis power handling across the full frequency range. Connectors are gold-plated five-way binding posts.

HTSSOLRS SPJNKER SYSTEM The HTSSOLRS speaker is intended for use in both Front Left

and Right and Surround Left and Right positions; it has power handling compatible with the HTSSOSPA power amplifier. Its response is tailored to match the HTSSOCF Center Front Speaker. When the amplifier is in the LRS Mode, the amplifier and speaker cut off at 80 Hz for a perfect match to the HTSSOSW Subwoofer; in the LRS, Mode, the low-frequency rolloff point extends down to 60 Hz.

The HTSSOLRS has a 6-1/2-inch low-frequency driver and a I -inch soft hbric, damped dome high frequency driver with fluid cooling. Both drivers are equipped with heavyweight shielded double magnet systems to reduce interference with the tv picture. The two way fourth order matched crossover has impedance equahzation and response shaping flters. It has been designed to optimize power handling across the frequency spectrum both on- and off-axis. Connectors are gold-plated five- way binding posts.

HTSSOSW SUBWOOFER S P W R The HTSSOSW has a response of 33 to 80 Hz. Its response

is tailored to match the cutoff characteristics of both the HTSSOCF and HTSSOLRS Loudspeakers when the HTSSOSPA Power Amplifier is in Operational Modes CF AND LRS. This high power, high fidelity subwoofer is intended for connection to Channel 1 of the HTSSOSPA Stereo Amplifier in the SW Operational Mode. The HTSSOSW Subwoofer has power handling characteristics completely compatible with the HTS amplifier. Its 304 mm (12 in.) transducer has a heavy damped cone with a rolled rubber surround and a 4.6 kg (10.2 Ib) shielded double magnet structure to reduce interference with the tv picture. The enclosure is high quality particle board, surface braced and cross braced to reduce undesired cabinet vibrations. Connectors are gold-plated five-way binding posts.

LOCATING SPIZAKERS Speaker location in each individual case will depend on the

size and shape of the room where the Home Theater System is installed. The pictorial below (FIGURE 1) is intended as a general guide to speaker placement.

HTS speakers are shielded to prevent interference with the tv picture and can be located where desired with respect to the tv screen.

Center Front The HTSSOCF has been designed to be used in a vertical

configuration for the center front positon. However, if space does not permit the vertical position, the box can be rotated 90° to the right with minimal change in response and dispersion. To maintain design integrity when the speaker is horizontal, the loudspeaker grille should be rotated 180' and reinserted into the baffle mounting holes. The Shure HTS logo can also be reassigned if desired (see the HTSSOCF data sheet for details).

Locate the center speaker as close as possible to the centerline of the tv screen. With a rear projection tv, you can often rest the HTSSOCF directly on the top surface of the cabinet; with a front projection tv, there is usually room below the screen; otherwise a shelf above the screen is likely the best location. (A shelf should be capable of supporting a static load of 67 kg [ I48 Ib], 4 times the weight of the speaker.) In the cabinet top position, the loudspeaker should be located as close as possible to the front cabinet edge (just above the screen) to reduce undesirable wave reflections which degrade the sound quality.

Front Left and Right Use HTSSOLRS speakers for the front left and right positions.

Locate these speakers as far to each side of the screen as possible.

Best imaging is obtained with all front speakers (Left, Right, and Center) at approximately the same height above the floor. (Consult your Shure HTS dealer about suitable speaker stands.)

Surround Left and Right Use HTSSOLRS speakers for the surround position. Locate

the surround left and right speakers either behind or to the sides of the viewers. In either case, keep the surround speakers as far apart as possible. We recommend the surround speakers be elevated and angled toward the primary viewing area. (Consult your Shure HTS dealer for appropriate speaker stands or wall mounting hardware.)

Subwoofer Because very low frequencies are non-directional in a room,

the HTSSOSW Subwoofer can usually be located at any convenient place in the front of the room. If space does not permit a front location, listen to determine the best position.

TYPICAL SPEAKER LOCATIONS FIGURE 1

SHURE HTS REFERENCE SYSTEM INTERCONNECTIONS A. SOURCE TO DECODER CONNECTIONS

'The HTSi.300 inputs accept ;lux level stereo output signals h m a stereo preamp or a video disc player, VCR, or tv receiver. I:se one pair of the suppliect interconnecting cables for the source to HTSi300 I, and R inputs.

1 . Single source If a single source is used, connect the source's stereo o u t p t ~ t s t o the H'l'S5.300 INPUTS L and R. (See Figure 2 )

STEREO SOURCE

WX OUT

"rmlr KISm OUTPUTS INPUT =~+~k%&

CL"IEI1 OUIPUT lo wFj--2~w 0 0 &:; LO M m r "

0

2. Multiple sources When multiple sources are to he decoded, i.e., a VCR, rideo disc player, and broatlcast ti1 as we l l as an audio- only tape deck, it is most efficient to connect them all to a single unit, such as an audio/video snitcher o r a stereo pr~a11p or receiver, and to connect that unit's stereo tape o u t l ~ u t s t o the HTSi300 INPITS L and R. (See Figure 3 )

AUDIO OUTPUTS - LASER O l L C P L l l F R 0 Mi;; 0 - 0.0

3. livo audio sources connected direc* to the Decoder A secontl autlio source can be connected to the IITS5.300 TAPE RETURN Left and Right inputs. (Figure 4 ) In this case: a. m e n the front panel TAI'E >ION switch is out, the

HTSi3OO decodes the inputs from L and K. b. Klihen the front panel TAI'E $ION switch is in, the

IITSi3OO decodes the inputs from 'I:-\I'E RE1'I.KN L and K.

Sll1l:J'IPLE SOPRCES '1'0 HTS4300 FIGLRE 3

DEPRESS

SkCO\I> SOlIRCE CONNEC'J'EI) TO IITSi300 x-\PE RETL'RN I'iPITS

FIGURE 4

B. DECODER TO AMPLIFIER AND SPEAKER 1. Use the three rema~ning pairs of interconnecting cables

supplied with the HTSi3OO to connect the HTSSSOO outputs to the H1'S50SPi4 amplifier inputs. (See Figure 5 . ) The highest p o w r demands are presented by the HTSSOCF Center Front Speaker and the HTSSOW Subwoofer. Therefore, we recommend that these two speakers be connected to different amplifiers. In the typical setup illustrated below, the Subwoofer and right surround speaker are connected to one amplifier, ivhile the center front and left surround speakers are connected to another. a. First HTS50SPA Amplifier

Connect the HTSiSOO Center output to Channel 1 and the Surround Left ou tpu t to Channel 2. Set the Operational Mode selector for channel 1 to CF* and for channel 2 to LRS*. Snap the CEhTER and SURROUND LEFT indicator tabs provided with the HTSiOSP.4 into the front panel indicator slots to label this amplifier's channels appropriately (see the IITS5OSI)A instruction sheet).

b. Second HTS50SPA Amplifier Connect the HTS5300 Subwoofer output to Channel 1 and the Surround Right output to Channel 2. Set the Operational Mode selector for channel 1 to SF'

and for channel 2 to LRS*. Insert the SUB'VC'OOFER and SURROUND RIGHT indicator tabs into the front panel indicator slots as above. Note that the FITSSOS'VC' can he connected only to Channel 1 of any HTSSOSPA.

c. Third HTSSOSPA Amplifier Connect the I-ITS5300 Front Left output to Channel 1 and the Front Right output to Channel 2. Set the Operational Mode selector for channel 1 to LRS* and for channel 2 to LKS*. Insert the FRONT LEFT and FRONT RIGHT indicator tabs into the front panel indicator slots as above.

2 . \lake sure that the back panel Center switch on the HTS5300 is in the ON position.

3. In order to ensure that all speakers are in phase, it is extremely important that each red plus (+) amplifier output is connected to a red plus (+) speaker input: and each black minus ( - ) amplifier output is connected to a black minus ( - ) speaker input. Connect the speakers as shown in Figure 5. The five-way binding post outputs of the HTSSOSPA accommodate high-quality audio cables. Gold. ,080-inch diameter pins soldered to the loudspeaker cables and inserted under the binding post hex caps (fastened finger-tight) are the most reliable connection.

*If a system is set up without an HTSSOSW Subwoofer, the Operational Mode selector should he set to CFx and CRSt instead of CF and LRS.

TYPICAL SYSTEM SE'KJP FIGLIRE 5

HTS5300 INITIAL SETUP AND OPERATION (see Figure 6) POWER

After the HTS5300 Reference System is installed, the HTS5300 Decoder is always on when the sytem is on. There is no separate On/Off switch on the Decoder and no On indicator. Power to the Decoder is often controlled by another component in the system or by a switchable power strip as listed in the components of the Reference System. However, no harm will be done if the unit is powered constantly.

PUSHBUTON CONTROLS Dolby Surround/Stereo/Mono Depress one of the first three switches at the left of the front panel, depending on the type of audio source material.

@ Dolby Surround 00: Depress this switch if the source material is "Dolby Surround" or "Dolby Stereo." The HTS5300 will decode all ambience and surround information and will process it for full surround sound.

NOTE: Some video tapes and discs that are actually Dolby- Surround encoded are not so labeled. The only way to determine this is to try a source with the Dolby Surround switch pressed in. Most recently released stereo movies are Dolby-Surround encoded. Additionally, for many viewers, all types of program sources mill sound acceptable if the HTS5300 switch is left in the Dolby Surround Position.

@ Stereo: Depress this switch if the source material is non- encoded stereo (e.g., music videos, records, or compact discs.) The HTS5300 decoder will simulate surround channel information while maintaining a three channel front sound stage for good dialogue localization. If the Center switch is in the Off position, the dialogue will appear in a phantom center channel.

@Mono: When the source is monophonic, depress this switch. By means of its digital processing, the HTS5300 dl provide stereo- and ambience-synthesis from mono sources. When the center switch is in the On position, outputs will appear at all six channels. When a center speaker is not used, make sure the Center switch is in the Off position. With a Center speaker in the system, there will be very stable center localization of dialogue; without a Center speaker, dialogue will appear in a phantom center channel. See the section on Mono E h c e Adjust to set the amount of simulated surround with the switch in Mono.

@ Surround Synthesis Defeat: Depress this switch to bypass HTS5300 processing when the Stereo or Mono switch is also depressed. The output will then be straight stereo or mono appearing in the Left and Right or Center channels. The Subwoofer channel will continue to function.

NOTE: If the Stereo button is depressed, the output will appear only in the Front Left and Right Channels. If the Mono button is depressed, and the Center switch is in the On position, output will appear in the Center channel only. If the Mono button is depressed and the center switch is in the Off position, output will appear in the Front Left and Right channels only

@Tape Monitor: When this switch is Out, the HTS5300 derives its source from the Left and Right input jacks. When this switch is In, the HTS5300 source derives from the Tape Monitor Return Left and Right input jacks.

ROTARY CONTROLS @Input Level: For the best signal-to-noise ratio and input processing, set the Input Level control as you would set a W meter. With the volume control set to a low but audible position, adjust the control so that, on the band of LEDs @, only the loudest occasional peak signals light the red, but most signals remain below the red.

Recommended initial setting: Straight up and down NOTE: In the future, consumer software may be available with Dolby calibration tones. To calibrate the HTS unit using these tones, put the HTS5300 in the stereo mode, and adjust the Input Level control to just light the last (rightmost) green LED on the input level display.

@ Input Balance: To set the Input Balance, use a source (like dialogue) that usually comes from the center of the sound stage. Adjust the Balance control so that its LED @ lights most often when center dialogue is present. Rotate the control slightly left and right to ensure that it is set at the optimum position.

Recommended initial setting: Straight up and down

@ Digital Delay (ms): To select and set the Digital Delay time, use the following formula (see Figure 7 ) :

Where Dl = Distance (in feet) from listener to closest front loudspeaker

D2 = Distance (in feet) from listener to closest rear loudspeaker

DS = Delay setting (in milliseconds)

Set the HTS5300 Digital Delay to the nearest delay setting (use the higher delay setting if between two delay values.) In some room arrangements, it may be difficult to decide which listener and which speaker to use for calculating distances. The guiding principle, where there are multiple listeners, is that the shortest delay heard by any listener should be 20 ms. So, for instance, in installations where there are multiple rows of listeners, calculate distances from the listener in the back row who is closest to a rear speaker. The diagrams in Figure 7 provide examples to clarify which listeners and distances to use in

HTS5300 AND REMOTE CONTROL FIGURE 6

Dl AJVD D2 IN VARIOUS ROOM CONFIGURATIONS FIGURE 7

calculating the optimum Digital Delay setting in rooms of various shapes. (Other delay times may be preferred by some listeners.) The final setting should cause the rearmost listener to hear center-screen speech coming from the front of the room. Never £rom the rear.

Recommended initial setting: 20ms

@~urround Volume and @ Master Volume: Use these controls to set a first approximation to the final listening level desired. The Master Volume control adjusts the volume of all (six, five, or four) output channels used. The Surround control adjusts the level of the rear channels, thus permitting the listener to achieve the desired front/rear balance in the sound field.

NOTE: Output trim controls (see Figure 12) are available underneath the unit for cases where front and rear amplifiers and/or speakers differ so much in power or efficiency that the Master and Surround Volume controls do not provide the desired relative levels. See the instructions for System Balance. Recommended initial settings: Start with the Surround control at higher levels than you might imagine desirable; then back off until satisfactory levels are reached. Starting at a low level and advancing the control may lead the listener to stop adjustment before the optimun level has been attained.

GRAPHIC DISPLAY The display shows the relative levels of the decoded and processed

output at the front and surround channels in the Dolby Surround and Surround Synthesis modes*. The display is independent of the Volume and Surround Level control settings. The graphic display is used to check initial setup of the HTS5300 Acra-Vector Logic Decoder and the HTS Reference System; to confirm that left channel outputs do appear at the left speaker for example.

Listening and experimentation will demonstrate the display's usefulness in educating the ears to the appropriate Master and Surround Levels for various performances. If, for instance, surround channel outputs are displayed very brightly but the aurally evident

surround level is low, then the Surround Volume control should be turned up to achieve the effect intended by the 6lmmaker.

Sometimes the display can also inform the listener of poorly mixed program material, for instance, by indicating signals in the surround speakers when only front channel dialogue should be heard.

*In the bypass modes (Mono and Stereo Surround Synthesis Defeat), the display should not be used as a guide to levels or locations.

@ REMOTE CONTROL The Remote Control allows convenient, wireless adjustment from

the listening position of the Master and Surround volume controls to suit each individual tape, disc, or broadcast. Pressing the "+" end of either the Master Volume or Surround Volume switch bar will cause the corresponding control on the HE5300 to rotate clockwise; pressing the " - " end will cause counterclockwise rotation. Once the end stop is reached, further pressing on the bar will have no effect on the output.

Pressing the Mute button will reduce the overall volume to a very low level, as indicated by the lighted red Mute LED @ on the HTS5300; pressing the Mute button again will restore the volume and turn off the Mute LED. If you hold the Mute button down for three seconds or more, you will turn on the Noise Sequencer. For the use of this feature, please see the section on Balance and Phasing. If you accidentally activate the Noise Sequencer, turn it off by pressing the Mute button.

The Remote Control system uses invisible infrared energy for transmission of control signals. This energy is radiated from the Remote Control over a wide angle from the front of the unit, making it generally unnecessary to aim it directly towards the HTS5300. A green LED @on the Remote Control indicates that a control signal is being transmitted, while the green Remote LED @on the HTS5300 shows that the signal is being received. In general, the Remote Control system wdl work properly if the HTS5300 is positioned anywhere in the room so that its wide-angle Remote sensor @can "view" the walls and other reflective surfaces. For best results, avoid placing the HTS5300's sensor in direct sunlight or other very bright light.

The Remote Control contains a 9-volt alkaline battery (Duracell MN1604, Eveready 522, or equivalent) for power. Intermittent or improper control action may indicate the need for its replacement (see Troubleshooting section). Recommended inital settings of Remote Surround and Master Volume: Same as Recommended Levels for front panel Surround and Master Volume above.

REMOTE EXTENDER (not illustrated) Use this optional accessory HTSGORX when the HTS5300 is located

in a closed cabinet or out of view of room surfaces. Connect the 2.5 mm plug from the HTSGORX to the REMOTE SENSOR jack on the HTS5300 back panel. The supplied cord is 9.1 m (30 ft) long permitting wide latitude in locating the HTS5300. If still greater distance from the HTS5300 is required, extension cable up to a length of 30 m (100 ft) additional is permissible.

The very small size and unobtrusive appearance of the HTS6ORX make it easy to find an appropriate location for it, while its weighted bottom and non-skid feet make it stable on most surfaces.

NOTE: While the Remote Sensors on the HTS5300 and the HTS6ORX are relatively insensitive to ambient bright light, we recommend that both be kept out of direct sunlight. No setting required: Just plug in and use.

MONO ENHANCE ADJUST A screwdriver-adjustable trim control labeled MONO ENHANCE

ADJUST is provided on the bottom of the HTS5300 (see Figure 8 . ) When the Surround Sound System is in the MONO Mode, this control permits the listener to adjust the amount of stereo synthesis to individual taste. The control affects the HTS5300 output only when the front panel MONO button is depressed and the SURROUND SYNTHESIS DEFEAT button is out. (Turn clochi+ise to increase the amount of enhancement.)

FIGURE 8

BALANCE AND PHASING In order to obtain correct operation frc~m a Shure HTS Home

Theater Sound System, all speakers and amplifiers must be in phase and properly balanced. The Shure HTS Reference system is designed to minimize the work of setting up and checking your Rome Theater Sound system. The major consideration in correct setup is that the amplifier to speaker cables are connected properly; each amplifier positive (+) terminal must be connected to a speaker positive (+) terminal, and each amplifier negative ( - ) terminal likewise must be connected to a speaker negative ( - ) terminal. If these directions are followved. the system will be in phase. To set and check the system balance:

1. Check the Operational Mode selector for each channel on each amplifier. The Mode setting should match the spcdker selected; the Center Front channel must be set for CF: Front Left and Right and Surround Left and Right Channels must be set for LRS; and the Subwoofer channel must be set for SW.

2. Turn the HTS5300 Master Volume all the way off and the Surround Volume to midrange.

3. Advance all individual HTS50SPA Level controls to maximum ( 0 ) .

t. Set the HTS5300 Input Level and Input Balance Controls to midrange.

5, Advance the HTS5300 Master Volume control to a comfortable listening level.

6. Turn on the Noise Sequencer by pressing the Mute button on the Remote for three seconds. A noise signal will sound from each speaker for two seconds in the sequence: Left. Center. Right. Surround; this will repeat until the Noise Sequencer is turned off.

-, Each channel should sound the same from a position in about the center of the listening area. If any fine adjustments are necessary (due to the shape of the room or unusually large reflective or absorptive areas), make them by turning down the appropriate BTSSOSPA level control(s). After you are satisfied that the system is in balance, turn the Noise Sequencer off by pressing the Mute hutton again. The setup is now complete.

A MIXED SYSTEM A surround sound system can also be constructed from the

following elements. 1 Dolby Stereo source 1 BTS5300 Acra-Vector Logic Decoder 6* Channels of amplification (two of these may be from an

existing hi-fi receiver or amplifier) i * Full-range loudspeakers (two of these may be the hi-fi

system loudspeakers) 1 * Subwoofer loudspeaker 1 Video displa! monitor or t\.

*An abbreviated starter system can be installed by omitting the center channel and/or the subwoofer. Delete:

1 or 2 Channels of amplification 1 Full-range loudspeaker 1 Subwoofer loudspeaker

The back panel Center switch must be "OFF" when the center channel speaker is omitted.

LOCATING SPEAKERS Speaker location will depend in each case on the size and

shape of the specific room in which the Home Theater System is installed. The diagrams in Figure 9 may be used as a general guide to speaker placement in rooms of various shapes. 'To avoid interference with the tv picture. speakers without special magnetic shielding should ordinarily be more than 0.6 ni ( 2 ft) from the screen. In each case, it is best to consult the tv and loudspeaker n~anufacturers. The center speaker is most conveniently mounted above or below the screen, but always as close to the screen centerline as possible. A subwoofer can usually be located almost anywhere convenient in the front of the room. If space does not permit a front location, listen to determine the best position.

LOCATING SPEAKERS FIGlrRE 9

INTERCONNECTING THE COMPONENTS OF THE MIXED SYSTEM A. SOURCE TO DECODER

Source to decoder connections are the same as for the HTS Reference system, with the following additional consideration. When the HTS5300 is integrated into a system with an audio preamp or receiver, it is often convenient to use a Tape Monitor loop of the preamp or receiver. To best accomplish this, connect the RECORD outputs of the preamp or receiver to the INPUTS of the HTS5300. Then, connect the HTS5300 OUTPUTS L and R to the PLAY inputs of the preamp or receiver (see Figure 10). NOTE: In this configuration, the preamp or receiver TAPE switch must be engaged, and its Volume and Balance controls will be used to set the balance of the Left and Right Front loudspeakers. (See Balance and Phasing below.)

MULTIPLE SOURCES, MKED SYSTEM USING EXISTING STEREO RECEIVER AND FRONT SPEAKERS

FIGURE 10

B. DECODER TO AMPLIFIERS AND SPEAKERS 1 . Observe the same general recommendations as for the

HTS Reference system. See Figure 11 for connections in a typical system. In order to ensure that all speakers are in phase, it is extremely important that each ampli6er plus (+) output is connected to a speaker plus (+) input; and each amplifier minus (-) output is connected to a speaker minus (-) input.

2. All front speakers must be full-range types. Front left and right speakers should be of the same type. The front center speaker should be either the same as front left and right or a higher power unit. NOTE: Use the LO CUT position of the Center Channel switch when the Center loudspeaker has a limited low- frequency response. This will prevent low frequencies incompatible with the speaker from causing distortion and other aberrations. When a full-range Center speaker is used, the Center switch should be "ON".

3. Surround left and right speakers should be of the same type. These may have a lower power rating than the front speakers.

CENTER

SUBWOOFER LOUDSPEAKER

LOUOSPEAKER

" - SOURCE

+ SURROUND

FRONT

LOUDSPEAKERS

TYPICAL SYSTEM SETUP FIGURE 11

SYSTEM BALANCE AND PHASING In order to obtain correct operation from an FITS5300 System, all speakers and amplifiers must be in phase and properly balanced. To check balance and phasing, proceed as follows (see Notes 1 and 2).

1 Turn down the volume on all power amps. Turn each up as required in the following directions.

2. Turn the Surround and Master Volume controls on the HTS5300 all the way down.

3. Label all the cables on the output of the HTS5300 with their respective channel identification.

4. Select an input source that can provide a balance and phasing test signal from a test tape or disc. Also, any good mono source can be used, such as a stereo FM tuner set to mono.

5. Set the Input Level control (vertically if not previously set) and the Input Balance control as described in a previous section of this manual.

6. Set the front panel pushbuttons to the Stereo Mode with the Surround Synthesis Defeat pushbutton In.

7 . Disconnect all the labeled output cables from the HTS5300.

8. Temporarily plug the Surround Left and Surround Right channel connectors into the Left Front and Right Front outputs.

9. Set the surround power amplifiers to maximum and advance the Master Volume control to a normal listening level.

10. Listen to the sound following the instructions of the test tape or disc. If a mono source is used, the loudspeakers are in phase when the sound image is between the two loudspeakers and its quality is good across the audio spectrum. If they are out-of- phase, the sound will have a a s e and directionless quality (see Kote 3.) To check the balance, listen for an image centered between the two loudspeakers. If necessary, reduce the level of the louder amplifier until the image is centered (see Note 4.)

11. Turn the Master Volume control all the way off and reconnect the Surround Left and the Surround Right cables to their appropriate outputs of the HTS5300.

12. Connect the Left Front cable to the Left Front output and the Center channel cable to the Right Front output. Repeat steps 9 and 10, but ignore the balance instructions as the center channel will be balanced later. If the center speaker is not like the left front and right front speakers, the distinction may not be clear cut. In that case, choose the connection that increases bass output.

13. Turn the Master Volume control all the way off and reconnect the Center Channel cable to the center Channel output. Reconnect the Right Channel cable to the Right Channel output and repeat steps 9 and 10 for the left and right loudspeakers.

14. Be sure that the rear panel Center switch is in the On position. Using a good quality mono program source, have a friend alternately depress the Stereo and Mono pushbuttons. From a listening position along the center line of the mom, carefully listen to the sound level as it alternates between the center and side loudspeakers. Turn down the power amplifier(s) for the louder source until switching between Stereo and Mono produces the same level (see Note 4.)

15. Turn the volume controls on the surround channel power amplifiers all the way off and advance the Surround Volume control on the HTS5300 to the middle of its range.

16. Select a program source with sigdcant surround channel program material as indicated by the front panel graphic display. (Music portions of Dolby Surround movies often have suitable program material.) Depress the Dolby Surround pushbutton on the HTS5300, and achieve a normal listening level with the Master Volume control.

17. Advance the volume controls on the surround power amplifiers until the surrounds have about equal levels with the fronts (see Note 4.)

18. Connect the Subwoofer cable to the Subwoofer output of the HTS5300. While listening to a program with significant low frequency information, advance the volume control on the subwoofer power amplifier to give an appropriate "bigger than life" presentation (see Note 4.) To check the phasing, try both polarities of the subwoofer connection. Select the connection with more bass output and a more coherent blending of low bass and mid-bass sound.

19. Use the Noise Sequencer to check speaker balance as follows. Hold down the Mute button for three seconds to turn the Noise Sequencer on. A noise wdl sound from each speaker: Left, Center, Right, Surround; this will repeat until the Noise Sequencer is turned off. Each noise should sound the same from a position in about the center of the listening area. If any fine adjustments are necessary, make them by turning down the appropriate amplifier level control. After you are satisfied that the system is in balance, turn the Noise Sequencer off by pressing the Mute button again.

20. The system setup is now complete.

NOTES: 1. For systems without a center channel loudspeaker, be sure the

rear panel Center switch is in the Off position, and delete steps 12 and 14.

2. For systems without a subwoofer, delete step 18. 3. To correct an out-of-phase condition, interchange the wires

(reverse the polarity) to one of the loudspeakers either at the amplifier output or at the speaker input.

4. If balance cannot be achieved with the power amplifier volume controls, use the output level trimmers (six screwdriver- adjustable controls) located on the bottom of the HTS5300 (see Figure 12.)

7

CENTER ;UB SURROUND

WOOFER L R L C p- RLJ

OUTPUT TRIM CONTROLS FIGURE 12

TROUBLESHOOTING GUIDE SYMlTOM CAUSE No sound, no LED'S N o power

FITS5300 Tape Mon switch in incorrect position

Receiver or preamp Tape Monitor switch incorrectly set

Receiver or preamp input selector incorrectly set

HTS5300 source wiring faulty

No sound, but Level and HTS5300 Volume control set too low Balance LED'S operate Mute mode selected by Remote Control normally Pushbutton selector switches set incorrectly

No power to power amps Power amp input selector incorrectly set Receiver or preamp Tape Monitor switch incorrectly set Receiver or preamp volume control set too low Power amp Volume control set too low Faulty output connections

Weak sound

No surround

HTS5300 !'olume control set too low Receiver or preamp volume control set too low Power amp Volume control set too low Center channel switch

Speakers out of phase Pushbutton selector switches set incorrectly

System incorrectly balanced

HTS5300 Surround control set too low Receiver or preamp volume control set too low Power amp Volume control set too low No power to surround power amps Surround power amp input selector improperly set Surround Synthesis Defeat switch is depressed Faulty output connections to surround amps and/or speakers Program material is mono or stereo without any reverberation

Surround channel noise Either Input Level control set too high or source material is improperly transferred

Improper directional Pushbutton selector switches information Surround level control too high or too low

Speakers out of phase Center channel switch incorrectly set

System not properly balanced Left and Right channels reversed

Remote Control Weak or dead battery works improperly Sensor blocked

Too much ambient light

CURE Check all power cords are plugged in; check power switches controlling circuit are on Check source is connected to L and R inputs (Tape hlon switch up) or to HTS5300 Tape Return L and R inputs (Tape Mon switch depressed) Check manufacturer's instructions; move switch to select HTS5300 input Check manufacturer's instructions; move switch to select HTS5300 input Check connections and cables to HTS5300 and to receiver

Turn Volume control up Turn Mute off using Remote Control All buttons must not be pushed in: Stereo and Mono buttons must not both be pushed in; only one of the first 3 left side buttons should be pushed in Check power connections; turn power switch on Check power amp instructions Check receiver or preamp instructions Set \'olume higher Set Volume higher Check that all connectors are fully inserted, all connections are securely made

Turn Volume control up Set Volume higher Set Volume higher Switch must be On or Lo Cut if Center speaker is connected; snitch must be Off if no Center speaker is in system See Balance and Phasing section; check phasing of all speakers All buttons must not be pushed in; Stereo and Mono buttons must not both be pushed in See section on Output Trim Controls

Turn Surround control up Set Volume higher Set Volume higher Check power connections and power switches Check setting Press Defeat switch to move to out position Check connections

Graphic display shows if surround channel signals are present

Reduce Input Level control; if noise is still present, check another source; if noise disappears, then original program is cause of noise

Check switch is appropriate for material Experiment with other settings See Balance and Phasing section; check phasing of all speakers Switch must be On or Lo Cut if Center speaker is connected; switch must be Off if no Center speaker is in system See section on Output Trim Controls Check that Left and Right sources are correctly connected to L and R inputs

Replace battery Move HTS5300 remote sensor for an unobstructed view of the room Move HTS5300 remote sensor out of direct light

PROGRAM MATERIAL Dolby Surround

The Dolby Surround process is designed for use with any two- channel medium. Any media (like laser discs, LTIS Hi Fi, Beta Hi Fi, stereo television broadcasts, stereo satellite transmissions, and stereo cable channels) that presenre the information contained in the original 35 mm stereo optical film soundtrack are suitable for use with the HTS5300 Acra Vector Logic Decoder. The HTS5300 will reproduce Dolby Surround movies from any of these sources uith all the excitement of the theater.

Films with Dolby Stereo soundtracks are identified in the movie credits with the logo 00 DOLBY STEREO. Recent releases of these movies in the consumer formats are identified on the jacket with the logo 00 DOLBY SURROUND. Earlier releases of Dolby Stereo movies are identified either on the jacket with a statement that the product has a matrixed surround soundtrack or in the credits with the Dolby Stereo logo. If you check the early releases in your collection, you may be surprised at the amount of Dolby Surround program material you already have*.

The future of Dolby Surround seems assured. Virtually all major motion pictures being produced today use the Dolby Stereo process, which is also being used to encode the latest music videos to add new dimension and realism to the performances. Stereo broadcast television dramas also benefit from the Dolby Stereo process which stabilizes the dialogue image in the majority of viewing environments while maintaining the audible panorama only Dolby Surround can provide. Each of these new and exciting applications of the Dolby Stereo process is suitable for use with the HTS5300.

SPECIFICATIONS Frequency response

Front Left, Center, Right: 20 to 20,000 Hz a 0 . 5 dB Subwoofer: -3 dB at 80 Hz; 12 dB/octave low pass Surround Left, Right: per Dolby Surround specifications (50 to

7,000 h ~ , -3 dB)

Input sensitivity 0.25 V (Input Level control at maximum) 2.5 V (Input Level control at minimum)

For red level indication in Dolby Surround mode, one channel driven

Input clipping Level 4.0 V

Output clipping Level 4.0 V

Input Balance control range +9 db

Output level trim adjustment range 20 dB

Input impedance 75 kQ

Output impedance 5.5 kf2

Total Harmonic distortion (1 kHz, 1 V output) Front Left, Center, Right: less than 0.1%, Master Volume control at

maximum Surround Left, Right: less tha.n 0.3%, Master Volume control at

maximum, Surround Volume control centered

Ultra Stereo Video recordings marked Ultra Stereo are compatible with the

Dolby Surround process. To decode the surround sound tracks on these recordings, depress the HTS5300 kont panel Dolby Surround selector switch.

Stereo The HTS5300 uses the same Digital Delay and Acoustic Space

Generator necessary for Dolby Surround reproduction to add a new dimension to conventional stereo sound. By using the HTS5300 in the stereo mode, the ambience recovered from a stereo recording is conditioned and presented in the surround channels. The effect is a re-creation of the excitement of being at the performance. Stereo surround is obtained from sources like stereo music videos, compact discs, phonograph discs, audio cassettes and tape recordings. Although the amount of recovered ambience varies from recording to recording, the Surround Level control and the Digital Delay control can be adjusted to bring a new realism to most stereo recordings.

Mono The concept of stereo audio transfer is in its infancy in the film

and video industries. To date, the vast majority of film and television material produced has been monophonic. In the Mono mode, with additional digital processing of the audio material, the HTS5300 increases the width and depth of monophonic motion pictures, television broadcasts, and music recordings.

*A list of films released with Dolby Stereo soundtracks is enclosed.

Output Noise, A-weighted - 90 dBV, Master Volume and Surround Volume controls centered - 80 dBV, Master Volume control at maximum, Surround Volume

control centered

Signal polarity Non-inverting at all outputs

Operating modes Dolby Surround, Stereo Surround Synthesis, Mono Surround

Synthesis, Stereo Bypass, Mono Bypass

Surround delay range 16 to 36 msec

Operating voltage HTS5300: 120 Vac *lo%, 60 Hz, 36W Remote Control: 9 Vdc alkaline battery, NEDA 1 6 0 4

Temperature range Operating: - 29 to 57OC (- 20 to 135OF) Storage: - 29 to 71 OC ( - 20 to 160°F)

Dimensions 60 mm H x 427 mm W x 382 mm D (23% in. x I6'Yb in. x 1 5 ' / ~ in.)

Net Weight HTS5300: 5.3 kg (11 Ib 10 oz) Remote Contfol (with battery): 165 g (5.8 oz)

Certifications Listed by Underwriters Laboratories Inc.; listed by Canadian Standards

Association as certified.

NOTE: All measurements with outputs loaded with 50 kf2.

Qpyrigk 1990. Shure Bmthm lnc. 27A8161 &i)

SHURE HTS The Home Theater Sound Division of Shure Brothers Inc.

222 Hartrey Avenue Evanston, IL 60202-3696

Printed in U.S.A.