© 1999 Cambridge SoundWorks, Inc.

DeskTop Theater ™ 5.1DTT2500 Digital

Five Satellite/SubwooferSpeaker System With Dolby Digital Processor

Installation and Operating Instructions

0420000547 REV. B SINGLE 2/9/01, 1:50 PM1

Notice for the USAFCC Part 15: This equipment has been testedand found to comply with the limits for a Class Bdigital device, pursuant to Part 15 of the FCCRules. These limits are designed to providereasonable protection against harmfulinterference in a residential installation. Thisequipment generates, uses, and can radiate radiofrequency energy and, if not installed and usedin accordance with the instructions, may causeharmful interference to radio communications.However, this notice is not a guarantee thatinterference will not occur in a particularinstallation. If this equipment does causeharmful interference to radio or televisionreception, which can be determined by turningthe equipment off and on, the user is encouragedto try one or more of the following measures:

• Reorient or relocate the receivingantenna.

• Increase the distance between theequipment and receiver.

• Connect the equipment to an outlet on acircuit different from that to which thereceiver is connected.

• Consult the dealer or an experiencedradio/ TV technician.

CAUTION: To comply with the limits for theClass B digital device, pursuant to Part 15 of theFCC Rules, this device must be installed withcomputer equipment certified to comply with theClass B limits.

All cables used to connect the computer andperipherals must be shielded and grounded.Operation with non- certified computers or non-shielded cables may result in interference toradio or television reception.

ModificationsAny changes or modifications not expresslyapproved by the grantee of this device could voidthe user’s authority to operate the device.

Notice for CanadaThis apparatus complies with the Class B limitsfor radio interference as specified in theCanadian Department of Communications RadioInterference Regulations.

Cet appareil est conforme aux normes de CLASSE“B” d’interference radio tel que spe’cifie’ par leMinistère Canadien des Communications dans lesrèglements d’interfèrence radio.

Declaration of ConformityAccording to the FCC96 208 and ET95-19

Name: Creative Labs Inc.

Address: 1901 McCarthy BoulevardMilpitas, CA. 95035

United StatesTel: (408) 428-6600

declares under its sole responsibility that theproduct

Trade Name: Creative Labs/Cambridge SoundWorks

Model Number: CSW3500

has been tested according to the FCC / CISPR22/85requirement for Class B devices and foundcompliant with the following standards:

EMI/ EMC: ANSI C63.4 1992, FCC Part 15 SubpartB

This device complies with part 15 of the FCCRules. Operation is subject to the following twoconditions:

1. This device may not cause harmfulinterference, and

2. This device must accept any interferencereceived, including interference that maycause undesirable operation.

Ce matériel est conforme à la section 15 desrégles FCC. Son fonctionnement est soumis auxdeux conditions suivantes:

1. Le matériel ne peut étre source d’interférenceset

2. Doit accepter toutes les interférences reques, Ycompris celles pouvant provoquer unfonctionnement indésirable.

Compliance ManagerCreative Labs, Inc.March 4, 1999

Safety & Regulatory InformationThe following sections contain notices for various countries:

WARNING: To prevent fireor shock hazard, do notexpose this appliance torain or moisture.

Important Notice

The serial number for the DTT2500 Digital islocated on the Decoder Amplifier. Please writethis number down and keep it in a secure area.This is for your security.

ComplianceThis product conforms to the following CouncilDirective:

• Directive 89/ 336/ EEC, 92/ 31/ EEC (EMC),

73/23/EEC (LVD)

i

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READ INSTRUCTIONS - All safety and oper-ating instructions should be read before theDTT2500 Digital amplified subwoofer/sat-ellite system is operated.

RETAIN INSTRUCTIONS - The safety andoperating instructions should be retainedfor future reference.

HEED WARNINGS - All warnings on thesubwoofer and in the operating instruc-tions should be adhered to.

FOLLOW INSTRUCTIONS - All operatingand use instructions should be followed.

CLEANING - Unplug the Power SupplyAdapter from the wall outlet or other powersource before cleaning. Do not use liquidcleaners or aerosol cleaners. Use a dampcloth for cleaning.

ATTACHMENTS - Do not use attachmentsnot recommended by CambridgeSoundWorks as they may cause hazards.

WATER AND MOISTURE - Do not use theDecoder Amplifier near water—for ex-ample, near a bath tub, wash bowl, kitchensink, or laundry tub; in a wet basement; ornear a swimming pool; and the like.

ACCESSORIES - Do not place the DTT2500Digital Decoder Amplifier on an unstablecart, stand, tripod, bracket, or table. TheDecoder Amplifier may fall, causing seri-ous injury to a child or adult, and seriousdamage to the product. Use only with acart, stand, tripod, bracket, or table rec-ommended by Cambridge Sound-Works,or sold with the product. Any mounting ofthe satellites or subwoofer should followthe manufacturer’s instructions, and

should use a mounting accessory recom-mended by Cambridge SoundWorks.

VENTILATION - Slots and openings in theDecoder Amplifier are provided for venti-lation and to ensure reliable operation ofthe Decoder Amplifier and to prevent itfrom overheating. These openings mustnot be blocked or covered. The openingsshould never be blocked by placing theproduct on a bed, sofa, rug, or other simi-lar surface. The Decoder Amplifier shouldnot be placed in a built-in installation suchas a bookcase or rack unless proper ven-ti lation is provided or CambridgeSoundWorks’ instructions have been ad-hered to.

HEAT - The Decoder Amplifier should besituated away from heat sources such asradiators, heat registers, stoves, and otherproducts (including amplifiers) that pro-duce heat.

POWER SOURCES - The Decoder Amplifiershould be operated only from the type ofpower source indicated on the markinglabel. If you are not sure of the type ofpower supply to your home, consult yourproduct dealer or local power company.For products intended to operate frombattery power, or other sources, refer tothe operating instructions.

POLARIZATION - The power supply may beequipped with a polarized alternating-cur-rent line plug (a plug having one bladewider than the other). This plug will fit intothe power outlet only one way. This is asafety feature. If you are unable to insert

the plug fully into the outlet, try reversingthe plug. If the plug should still fail to fit,contact your electrician to replace yourobsolete outlet. Do not defeat the safetypurpose of the polarized plug.

POWER-CORD PROTECTION - Power sup-ply cords should be routed so that they arenot likely to be walked on or pinched byitems placed upon or against them, payingparticular attention to cords at plugs, con-venience receptacles, and the point wherethey exit from the Decoder Amplifier.

LIGHTNING - For added protection for theDTT2500 Digital system during a lightningstorm, or when it is left unattended andunused for long periods of time, unplug itfrom the wall outlet. This will prevent dam-age to the Decoder Amplifier due to light-ning and power-line surges.

OVERLOADING - Do not overload wall out-lets, extension cords, or integral conve-nience receptacles as this can result in arisk of fire or electric shock.

OBJECT AND LIQUID ENTRY - Never pushobjects of any kind into the Decoder Am-plifier through openings as they may touchdangerous voltage points or short outparts that could result in a fire or electricshock. Never spill liquid of any kind on thespeakers or the Decoder Amplifier.

SERVICING - Do not attempt to service theany part of the DTT2500 Digital yourselfas opening or removing covers may ex-pose you to dangerous voltage or otherhazards. Refer all servicing to qualifiedservice personnel.

DAMAGE REQUIRING SERVICE - Unplugthe power supply from the wall outlet orother power source and refer servicing toqualified service personnel under the fol-lowing conditions:a) When the power supply cord or plug isdamaged.b) If liquid has been spilled, or objectshave fallen into the subwoofer.c) If the Decoder Amplifier has been ex-posed to rain or water.d) If the subwoofer does not operate nor-mally by following the operating instruc-tions; or exhibits a distinct change in per-formance.e) If the product has been dropped ordamaged in any way.

REPLACEMENT PARTS - When replace-ment parts are required, be sure the ser-vice technician has used replacementparts specified by Cambridge SoundWorksor have the same characteristics as theoriginal parts. Unauthorized substitutionsmay result in fire, electric shock, or otherhazards.

SAFETY CHECK - Upon completion of anyservice or repairs to the DTT2500 Digitalsystem, ask the service technician to per-form safety checks to determine that theDeskTop Theater 5.1 system is in properoperating condition.

WALL OR CEILING MOUNTING - TheDTT2500 Digital satellites should bemounted to a wall or ceiling only as rec-ommended by Cambridge SoundWorks.

IMPORTANT SAFETY INSTRUCTIONS

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Declaration Of Conformity ................................................................... iSafety Precautions .......................................................................... i, iiIntroduction ....................................................................................... 1Inspecting For Damage ....................................................................... 2Important Notes .................................................................................. 2Installation Sequence .......................................................................... 3Speaker Placement .............................................................................. 3Speaker Wire and Stand Installation .................................................... 6Mounting The Speakers ...................................................................... 7Decoder Amplifier Placement ............................................................... 8Making Connections ........................................................................... 8Wiring Diagram .................................................................................. 9Connection to Sound Blaster Live! Via Digital DIN ............................... 9Decoder Amplifier Functions ............................................................. 10Surround Reference .......................................................................... 12

Dolby Digital ................................................................................. 12Dolby Surround with Pro Logic ...................................................... 12Creative Multi Speaker Surround.................................................... 13Audio Mode Selection .................................................................... 13

Applications Guide ............................................................................ 14Specifications .................................................................................... 18Important ......................................................................................... 18Technical Support ............................................................................. 181-Year Limited Warranty .................................................................. 20

ContentsDeskTop Theater 5.1

DTT2500 Digital

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hank you for purchasingDeskTop Theater 5.1DTT2500 Digital byCambridge SoundWorks.

IntroductionCambridge SoundWorks

1-800-FOR-HIFI(1-800-367-4434),8 AM to Midnight,

Eastern time1 PM to 4 AM

Greenwich Mean TimeIn Canada: 1-800-525-4434

Outside US or Canada:Tel: 617-332-5936Fax: 617-527-3194

www.hifi.comor e-mail us at info@hifi.com

DeskTop Theater 5.1 DTT2500Digital lets you experience the fullpotential of Dolby®Digitalmultichannel sound from yourcomputer DVD player, with adynamic output that rivals acomponent home theater system.It processes both Dolby Digital andDolby Surround program material. DeskTop Theater 5.1 DTT2500Digital offers discrete four-channelsupport for Microsoft® DirectSound®

3D and its other derivatives. Insome of today’s best CD-basedaction games, DeskTop Theater 5.1DTT2500 Digital can automaticallydecode the Dolby Surround cut-scenes while offering envelopingpositional four channel audio. It’sready for the new era of DVD-basedgames.

Also included is Creative MultiSpeaker Surround, which lets youhear all of your favorite stereoprogram material with a new andexciting three-dimensional quality.

T

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InspectingFor Damage Important Notes

should utilize the exclusive DigitalDIN connection, to hear theclearest digital audio available.Conventional 2-channel soundcards such as Sound Blaster 16 orthe Sound Blaster AWE series canalso be used with DTT2500Digital, but these cards will notprovide rear channel output whenplaying games usingDirectSound®3D or its derivatives.

One pair of satellites has cables

These instructions assume youhave a DVD player with a coaxialDolby Digital (AC-3) output (forexample, the Creative Labs PC-DVDEncore). These instructions alsoassume your sound card supportsprocessing of DirectSound®3D,including front and rear two-channel minijack line outputs (likeCreative Labs Sound Blaster PCIseries or Sound Blaster Live!series). Sound Blaster Live! owners

that are 3 meters (9 feet) long. Theother pair has cables that are 5meters (16 feet) long. Typically, thetwo satellites with the longercables will be used on the surroundchannels, but the satellites areotherwise identical. If you needextra cable length for the frontchannel satellites, use the pairwith the longer cables instead.

All the speakers are magneticallyshielded, but the subwoofer is not.

Examine each unit carefully forsigns of shipping damage. If there isany damage, do not install thesystem. Consult the store where youpurchased the system or call theappropriate Creative Technology, Ltd.support group at the number listedat the end of this publication. Savethe shipping carton and inserts incase you have to transport thesystem later.

All the items shown in theillustration should be included. Ifanything is missing, notify theretailer.

Support Extends (18)

Holder/Cap (2)

Supports (6)

Feet (6)

Frames (2)

Quick Reference Guide

Desktop Stands for satellites (5)

CREATIVEMULTI SPEAKER

DTT 3500 DIGITAL

MUSI MOVI FOURPOINDOLBYDIGITA

L

DOLBY AUDIO SPEAKER MUT

LL R

MASTE CENTE SUBWOOFE SURROUND

PRO LOGIC

ANALOG INDIGITAL IN

POWER

STEREO

Decoder Amplifier

Monitor Stand

(5) Wall Mounting Hardware

SPDIF DIN Cable

Tandem Audio Cable (Green and Black Miniplugs)

SPDIF Cable (RCA to RCA)

Strips of 4 feet (5)

3 meter speaker wires (4)

5 meter speaker wires (2)

Hook and Loop Fasteners (10) Satellite Position Stickers

CSUB

RSLSRL

CSUBRSLSRL

CSUBRSLSRL

Satellites (5)

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Speaker PlacementInstallation Sequence1. Read all of the instructions

before installing the speakersystem.

2. Using the placement instruc-tions as a guide, position thesatellites, the center channelspeaker and subwoofer aroundyour computer. Install theDesktop Stands and FloorStands as appropriate. If youwish to substitute a poweredsubwoofer for the subwooferthat comes with the DTT2500Digital, read Substituting apowered subwoofer page 5.

3. Connect the satellite speakers,center channel speaker, andsubwoofer to the back of theDecoder Amplifier.

4. Connect the Dolby Digital outputof your digital program source(typically a DVD player) to theDolby Digital input of theDecoder Amplifier.

5. Connect your normal audiosignal sources via the Line Inand Rear In inputs. An owner ofa Sound Blaster Live! soundcard with a Digital DIN output

should use the supplied cable toconnect it to the Digital DINinput instead.

6. With the Decoder Amplifier’spower switch “off”, connect thepower supply adaptor to theDecoder Amplifier.

7. Turn on the power. Use theSPEAKER TEST mode to positionand balance the speakers.

8. You may wish to experimentwith speaker placement brieflybefore concealing the connectingcables and making the installa-tion more permanent.

9. The unit is ready for you toenjoy. Refer to the QuickReference guide for informationabout settings for specificprogram sources like DVD, CDs,Video CD and games.

The Front Satellites. The left frontand right front satellites playstereo music, the off-screen soundsof video playback and the frontchannels of four channel games.

These satellites should be placedto the sides of your monitor (seeDiagram A). Be sure to have aclear line of sight from yourlistening position to thesesatellites. The satellites intendedfor front placement have 3 meters(9 feet) of cable.

Install the satellite’s DesktopStands when using them on thedesktop (see page 6).

The satellites may also be hungon the wall behind the monitorusing the screw and wall anchorsprovided (see Mounting TheSpeakers, page 7).

If you wish to save desktopspace, use the hook and loopfasteners to attach the satellitespeakers to the sides of thecomputer monitor (see Diagram B).The Center Channel Speaker. Thecenter channel speaker providesthe on-screen effects and dialog inDolby Digital, Dolby Surround orCreative Multi Speaker Surroundmodes. It should be placed as closeto the center of your computermonitor as possible.

A B

CREATIVEMULTI SPEAKER SURROUND

DTT 3500 DIGITAL

MUSIC MOVIE FOURPOINTDOLBYDIGITAL

DOLBY SURROUND AUDIO MODE SPEAKER TEST MUTE

LL RR

MASTER CENTER SUBWOOFER SURROUND

PRO LOGIC

ANALOG INDIGITAL IN

POWER

STEREO

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There are many mountingpossibilities. The monitor standcan be attached with hook andloop fasteners to the top of thecomputer monitor. It directs thesound down towards the listener(see Diagram C).

If your computer monitor’sconstruction directs the sound ofthe center channel satellitetowards you without a stand,attach the satellite directly to thetop of the monitor, using the hookand loop fasteners (see DiagramD). Position the face of the center

channel so that it is as far forwardas possible.

Use a Desktop Stand to positiona center channel satellite in frontof the monitor. It directs the soundup towards the listener (seeDiagram E).

The Center Speaker may also behung on the wall behind themonitor using the screw and wallanchors provided (see MountingThe Speakers, page 7).The Rear Satellites. The rearsatellites provide the surroundeffects in Dolby Digital, DolbySurround and Creative Multi

Speaker Surround modes. Theyalso provide the discrete rearsounds produced in four channelgaming.

5 meters (16 feet) of cable isprovided with the two remainingsmall satellites for more flexibilityin rear channel placement.

The rear satellites may be placedin any convenient sites alongsidethe listener, including sites slightlyforward of the listening location.

The rear satellites do not have tobe at exactly the same height, nor

C D E

F G

at the same height as the frontsatellites.

If you have side walls close toyour listening position, excellentplacement for the rear satellites isslightly behind your listeningposition, slightly above ear level(see Diagram F). The satellites maybe hung on the wall using thescrew and wall anchors provided(see Mounting The Speakers, page 7).

Do not be concerned if thisplacement is not practical. Anyrear satellite placement to the leftand right side of the listeningposition will provide strongdirectional and surround effects.

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The rear satellites may beinstalled on their convenient floorstands. While listening, the standsshould be positioned to the left andright of your listening position (seeDiagram G on the previous page).

The Floor Stands are smallenough to be stowed underneath adesk when not in use. See page 7for floor stand assembly instruc-tions.

Larger work surfaces canaccommodate both front andsurround pairs of satellites ontheir Desktop Stands. Try theextreme corners of a desk usingthe Desktop Stands (see Diagram H).

Also, you may attach the rearsatellites under a desktop or at thesides of a desk using the hook andloop fasteners (see Diagram I).

After you have positioned therear satellites, use the test soundto make sure each speaker can beheard clearly.

The Subwoofer. The subwoofer’soptimum position is on the flooragainst the wall under thecomputer desk. The nearer thesubwoofer is to the corner of theroom, the stronger its maximumbass output will be. We strongly

recommend placing the subwooferon the floor (see Diagram J).

Leave at least 8 cm (3 inches) ofspace between the subwoofer faceand a wall. Small objects in frontof, but not touching the subwoofer(table legs, for instance) will haveno effect on its sound. If you haveno available floor space, thesubwoofer can be placed on ashelf, desktop or other sites, but itsmaximum output will be reduced.The subwoofer is not magneticallyshielded, so position it at least 18

H I J

inches away from a computermonitor.

Substituting a poweredsubwoofer. You may substitute apowered subwoofer for thesubwoofer that comes with theDTT2500 Digital. Connect its linelevel input (typically an RCA jack)to the dedicated subwoofer outputon the back of the DecoderAmplifier, using a shielded audiocable with RCA plugs on each end.Refer to the powered subwoofer’sUser Manual for adjustmentprocedures.

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Speaker Wire and Stand Installation Typically, the 3 meter speakercables will connect the front andcenter satellites to the DecoderAmplifier and the 5 meter cableswill connect the rear satellites tothe Decoder Amplifier. A panel oftwelve self-adhesive labels isprovided to identify each satelliteand subwoofer and the oppositeend of the cable connected to asatellite and subwoofer.1. Identify a 3 meter cable. Most

often, a satellite will be usedwith a desktop stand. In thiscase, thread the bare wire end ofa 3 meter cable through the holein the desktop stand. Connectthis end to a satellite (as shownin Diagram K). Carefully insertthe desktop stand’s attachmentarm into the socket in the backof the satellite, taking up anyslack in the cable as required.

2. To use this satellite in the frontleft position, remove the backingfrom the small, round “L” labeland apply it to the back of thesatellite (see Diagram K).

3. Remove the backing from theremaining, longer “L” label andwrap it around the opposite endof the speaker cable near theRCA-type plug.

4. Place the satellite in the frontleft position.

5. Repeat this process usinganother 3 meter cable for thefront right satellite, using the“R” labels.

6. Connect another 3 meter cable toa satellite. Use the “C” (center)labels. If used, the MonitorStand attaches to the satellite inthe same manner as theDesktop Stands, although itdoes not have a hole for thespeaker wire. Route the wire tothe left or right side of theattachment strut. Position thesatellite.

7. If you wish to use the FloorStands with the rear satellites,assemble the stand according toAttaching The Floor Standinstructions on page 7. Use theRS and LS labels (right and leftsurround) and 5 meter cables.

8. Connect the subwoofer using thelast 3 meter cable to the “SUB”labels.

Diagram K: To connect thespeaker wire to each satellite,press one of the spring-loaded tabsto expose the connection hole.

Insert the bare end of the wireinto the exposed hole, then releasethe tab to lock the wire in place.Connect wires with red bands tored tab connectors, and unmarkedwires to black tab connectors. Notes: Matching red wires to redtabs and unmarked wires to blacktabs insures the speakers all play“in phase”. “Out-of-phase”connections will do no electricalharm, but the overall soundquality will be greatly reduced.You can substitute regular 18gauge speaker wire to createlonger cables, if needed.

K

DOLBY DIGITAL(AC-3) SPDIF IN

SPEAKER OUTPUTS

LINE IN REAR IN

C SUBWOOFER RS LS R L

15VDC IN

DIGITALDIN

ANALOG AUTO

INPUTSUBWOOFER

LINE OUT

C

SUB

RS

LS

RC

SU

BR

SLS

R

CS

UB

RS

LSR

REARRIGHTL

L

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Mounting The SpeakersScrew Mounting: The Satellite

and Center Channel speakers maybe hung on a wall using an M5screw and their keyhole openings.

First attach four self-adhesivefeet to the back of each satellite(see Diagram P) insuring avibration-free, secure installation.Leave about 3/8 of an inch of thescrew-head exposed to fit into theback of the speaker.

Plastic anchors may be needed tosecure the screws into particularlyhard or soft material. If so, drill theappropriate sized holes in the walland tap the anchors into the holesuntil they are flush with the wall.Insert the screws into the anchorsuntil they protrude 3/8 inch fromthe wall.

REARRIGHTL

P

CREATIVEMULTI SPEAKER SURROUND

DTT 3500 DIGITAL

MUSIC MOVIE FOURPOINTDOLBYDIGITAL

DOLBY SURROUND AUDIO MODE SPEAKER TEST MUTE

LL RR

MASTER CENTER SUBWOOFER SURROUND

PRO LOGIC

ANALOG INDIGITAL IN

POWER

STEREO

Q

Hook and Loop Fasteners: Whenmounting speakers with hook andloop fasteners, make sure that allsurfaces are clean and free of dirtand grease. Hard, flat, unpaintedsurfaces work best with hook andloop fasteners (see Diagram Q).

Attach the fastener first to aspeaker. Then remove theremaining backing and adhere tothe chosen surface.

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CREATIVEMULTI SPEAKER SURROUND

DTT 3500 DIGITAL

MUSIC MOVIE FOURPOINTDOLBYDIGITAL

DOLBY SURROUND AUDIO MODE SPEAKER TEST MUTE

LL RR

MASTER CENTER SUBWOOFER SURROUND

PRO LOGIC

ANALOG INDIGITAL IN

POWER

STEREO

Decoder AmplifierPlacement

RMaking Connections

Consult the Wiring Diagram onthe next page before making anyconnections.Speaker Connections. Insert onesatellite’s plug into the corre-sponding Speaker Output on theDecoder Amplifier. Repeat thisprocess for the remainingsatellites and subwoofer. Ifsubstituting a poweredsubwoofer, connect it to theSUBWOOFER LINE OUT.Signal Connections.Dolby Digital. Connect the DolbyDigital/SPDIF output of yoursignal source to the DecoderAmplifier’s Dolby Digital inputusing the cable with the RCAplugs at each end.For Sound Blaster Live! soundcards with a digital I/O card:Connect its Digital DIN output tothe Digital DIN input with thesupplied Digital DIN cable (theone with the red plugs at eachend). It is not necessary to

connect a cable to the Line In andRear In input in this instance.Refer to Connection to SoundBlaster Live! via Digital DIN(next page) for more informationabout this connection.For all other sound cards: Usethe tandem audio signal cable.Connect the green stereominiplugs to the Line Outminijack output of your soundcard and to the Line In minijackoutput of the Decoder Amplifier.Connect the black stereominiplugs to the Rear Outminijack output of your soundcard (if present) and to the RearIn minijack input of the DecoderAmplifier.)Power Supply Adapter Connec-tions. Confirm the power switchis in the “OFF” position. Insertthe power supply’s AC plug intoan appropriate receptacle. Insertthe small DC connector into the“15V DC IN” receptacle on theback of the Decoder Amplifier.

The Decoder Amplifier can beplaced on the desktop, a shelf orany site that makes the controlsconvenient (see Diagram R).

The Power Adapter cord must beable to reach from the DecoderAmplifier back panel to your ACpower receptacle.

Place the Decoder Amplifier on ahard, flat surface.

There are ventilation slots on thebottom and top of the DecoderAmplifier’s enclosure. Don’t blockthe ventilation slots by placingmaterial on top of or below theDecoder Amplifier.

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Wiring DiagramIf your Sound Blaster Live! soundcard includes a Digital I/O card,you can take advantage of theclear, distortion-free audioavailable from its Digital DINoutput.1. Insert on end of the SPDIF

cable into the Digital DINoutput jack on the SoundBlaster Live! Digital I/O card.The position of the Digital DINconnector on the Digital I/Ocard may be different from thisdiagram. The Digital DINconnector is the only connectorwith a 9-pin configuration.

2. Insert the other end of theSPDIF cable into the DigitalDIN input on the decoderamplifier.

3. Use the following procedure toconfigure the Sound BlasterLive! sound card for fourspeakers:

• Bring your mouse pointer tothe top of the monitor screento display the CreativeLauncher.

• Click on AudioHQ.• Click on the Speaker tab. The speaker dialog box will

appear.• On the configuration tabbed

page, select the “4 Speakers”option.

• A sofa icon (representing you)appears in the center of thepreview box, with four speakersat the corners of the box.

• In some versions of SoundBlaster Live! software, you canselect the “four-speaker” outputoption in the Environment deckof the Surround Mixer application (located in the SoundBlaster Live! program tab of theCreative Launcher).

Note: When the Analog/Autoswitch is pushed towards the Autoside, the signal at the Digital DINinput is given priority and thesignal at the Analog Audio inputswill be ignored. To listen to asound source through the analogaudio inputs, push the switch tothe Analog side.

DOLBY DIGITAL(AC-3) SPDIF IN

SPEAKER OUTPUTS

LINE IN REAR IN

C SUBWOOFER RS LS R L

15VDC IN

DIGITALDIN

ANALOG AUTO

INPUTSUBWOOFER

LINE OUT

DVD OUTPUT(EXAMPLE: CREATIVE LABS

PC-DVD ENCORE Dxr2)SOUNDCARD OUTPUT

(EXAMPLE: SOUND BLASTER LIVE!)

DIGITALOUTPUT

REAROUT

LINEOUT

POWERSUPPLY

ADAPTER

RIGHT SURROUNDSATELLITE

RIGHT SATELLITE

LEFT SURROUNDSATELLITE

LEFT SATELLITECENTER CHANNELSPEAKER

SUBWOOFER

BLA

CK

GR

EE

N

DOLBY DIGITAL(AC-3) SPDIF IN

SPEAKER OUTPUTS

LINE IN REAR IN

C SUBWOOFER RS LS R L

15VDC IN

DIGITALDIN

ANALOG AUTO

INPUTDigital DIN ConnectorDIGITAL I/O CARD

SPDIF CABLE

DTT2500 Digital Decoder Amplifier

DIGITAL DINSUBWOOFER

LINE OUT

Connection to Sound BLasterLive! via Digital DIN

0420000547 REV. B SINGLE 2/9/01, 1:50 PM13

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No lights illuminated: Mutesany analog stereo or CMSSoutput. Use this setting if youwish to play an analog stereosignal through the Dolby ProLogic processor. For moreinformation about Creative MultiSpeaker Surround, see page 13.5. Dolby Digital indicator light:This light turns on whenever aDolby Digital signal is detected atthe SPDIF input of the DTT2500Digital. For Dolby Digital 5.1sound reproduction, make sureonly this light is illuminated.6. Dolby Surround: This buttoncycles between Dolby Pro Logicprocessing of the digital signal,then the analog input and no ProLogic processing. To decodeDolby Surround program at theDigital DIN input, select theAnalog Pro Logic mode.7. Audio Mode: Use this buttonto play just the left or rightchannels of a stereo digitalsignal (PCM from an audio CD, aVideo CD or a stereo signal froma DVD). Use this when, forexample, a Video CD has differentlanguages on the left and rightchannels.

Repeated presses of the buttonselects which channel is fed toboth the Left and Right frontspeakers.LL-Left channel to both Left andRight front speakers.RR-Right channel program toboth Left and Right frontspeakers. See Audio ModeSelection, page 13 for furtherinformation about this feature.8. Speaker Test: Press thisbutton to start the “test sound”generator. Use this test sound toposition all the speakers and tobalance their relative output.

The test sound moves in sequencefrom the left satellite, the centerspeaker, the right satellite, thento the right surround satellite,left surround satellite and thesubwoofer. All of the indicatorlights will blink on and off whilethe test sound generator is inoperation.

The test sound will operate forthree complete cycles and thenstop. You can terminate the soundat any point by pressing the SpeakerTest button again.

First use the test sound to verifythat each speaker is operating.

Top Row4. Creative Multi SpeakerSurround: CMSS processesanalog program material.Repeated presses of this buttonsteps through five differentoperation modes.Music: Creates a 5.1 speakersoundfield appropriate for musicfrom any analog sound source.Movie: Creates a 5.1 speakersoundfield appropriate for movieor game enjoyment from ananalog sound source.FourPoint: Use this mode forDVD games having Dolby Digitalsoundtracks with EnvironmentalAudio Extensions or Microsoft®

DirectSound®3D for real-timepositioning of sound effects.Stereo: Use this mode when youwant to hear just stereo effects or

Decoder Amplifier FunctionsWhen the power is switched

“ON”, the green indicator lightson the face of the DecoderAmplifier will sequentially lightfrom the left to the right. TheCMSS Music light will remainilluminated after start-up. Theindicator light for Dolby Digitalwill illuminate automatically if aDolby Digital program is playing.1. ON/OFF: Switches DeskTopTheater DTT2500 Digital poweron and off. An indicator lightsignals the power is on.2. Master: Adjusts the volume ofthe entire system.3. Center, Subwoofer andSurround: These controls adjustthe level of the indicatedchannels. Their output levelshould be balanced with the fixedoutput level of the Left and Rightfront speakers.

A Quick Reference Guide isprovided separately.Consult this guide foradvice about playingdifferent program sources.Slip it underneath theDecoder Amplifier forfuture use.

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CAMBRIDGESOUNDWORKS

CREATIVEMULTI SPEAKER SURROUND

MUSIC MOVIE FOURPOINTDOLBYDIGITAL

DOLBY SURROUND AUDIO MODE SPEAKER TEST MUTE

LL R

MASTER CENTER SUBWOOFER SURROUND

PRO LOGIC

ANALOG INDIGITAL IN

POWER

1

STEREO

2

3

9876

5

4

The speaker level controlsoperate at all times. If desired,you may adjust these controlsduring program material to fine-tune the balance.9. Mute: Mutes all output fromthe DTT2500 Digital. Press thebutton once to mute. Press asecond time to restore audiooutput.

The CMSS, Dolby Surround,Audio Mode and Speaker Testbuttons are operable duringmute.

Then make sure the speakersare positioned so that the testsound can be clearly heard.

Finally, adjust the front panellevel controls for the center,subwoofer and rear speakers.Adjust each control so its speakerachieves a balanced output levelwith the left and right satellites(which provide a fixed “reference”output level).

All Decoder Amplifier functionsexcept for the level controls aredisabled while the test sound isrunning.

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Dolby DigitalDolby Digital (earlier called AC-3)

delivers five discreet full-rangechannels (left front, center, rightfront, left surround and rightsurround) plus a separate LowFrequency Effects (LFE) channel.

Many soundtracks on the latestgeneration laser discs, DVDs andHigh Definition Television (HDTV),are encoded with Dolby Digitaltechnology.

When a 5.1 channel DolbyDigital program source is playing,such as from a Creative PC-DVDplayer, the Dolby Digital indicatorlight will illuminate automatically.

Note: Not every section of a DVDwill be 5.1-channel encoded. Onmany DVDs, only the main movieprogram will be available in 5.1channel sound. Other supportingchapters (like a “Director’sComment” section) may be instereo or mono. These sections willnot light the Dolby Digital indicateor even though the sound will beproperly reproduced by theDTT2500 Digital.

Dolby Pro LogicDolby Surround is an earlier

surround sound standard which isdecoded with a Pro Logic processorin the DTT2500 Digital. The ProLogic steering circuitry derivesseparate center and rear channelsfrom encoded stereo programsources.

Pro Logic processing provides aconvincing movie soundfield whenthe material is specifically encodedfor Dolby Surround. Most olderstereo movie soundtracks will onlybe encoded for Dolby Surround,even though the program sourcemay be a DVD’s digital output.Most DVDs containing DolbySurround program material willcause both the Dolby Digital andDigital Pro Logic lights toilluminate. DTT2500 Digital willdecode these digitally transferredDolby Surround programs throughthe digital Pro Logic decoderautomatically.

When listening to DVD movieswith 5.1 channel Dolby Digitalsound, be sure to listen only to thedigital program source. You caninsure this by:

1) making sure your DVDplayer’s stereo downmix isnot sent to your soundcard. Forexample, disconnect any cablelink between the cards.2) making sure all four CMSSindicator lights are off(MUSIC, MOVIE,FOURPOINTand STEREO)3) muting the “CD” input ofyour computer’s software mixer/volume control application.When playing a DVD game with

a mix of Dolby Digital 5.1 sound (adigital signal at the SPDIF input)and soundcard wavetable output(a signal at the analog input), besure to engage the FOURPOINTmode in the CMSS settings.

CD-ROMs and CD’s with DolbySurround encoding will featurethe Dolby Surround logo at thebeginning of the program or on thepackaging. Process these programsby making sure all CMSS indicatorlights are off and selecting the ProLogic Analog Input setting of theSurround Mode button. Use thisAnalog Pro Logic Mode to decodeDolby Surround program materialat the Digital DIN input.

Do not select a Pro Logicdecoding mode if the programmaterial is not encoded for DolbySurround. Excessive centerchannel output will result, andmost stereo effect will be lost. UseCMSS “Movie” or “Music” modesto upmix stereo programs to arealistic 5.1 channel sound field.

Surround Reference

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Creative Multi SpeakerSurround (CMSS)

CMSS is a 2-channel to 5.1-channel sound processor similar insome aspects to a Dolby Surroundwith Pro Logic processor.

CMSS Music mode creates aconvincing 5.1 channel surroundsoundfield with typical stereosources, whether they are DolbySurround-encoded or not. It workswell with Dolby Pro Logic, WAVE,AVI and MIDI program material. Inessence, CMSS Music mode putsyou “on the stage” for themusic’s performance, surround-ing you with the performers.

In a similar manner, CMSS Moviemode provides the sonic impres-sion of being front and center at amovie screening. Dialog and allnormally centered sounds from astereo program are heard throughthe center speaker. Use this modewhenever a music program hassounds you want to blend with on-screen action or dialog.

Unlike Pro Logic decoding, CMSSMusic, Movie and Four Pointmodes are appropriate for use withmulti-coded sources such as DVDgames. In some game titles, themovie sequences may be encodedin Dolby Surround but the gamesequences may be in the WAVformat. CMSS Movie modesupports 6-channel output for.WAV, .AVI, .MIDI and other audiosoftware formats. Few, if any ofthese kinds of formats are DolbySurround encoded.

The FOURPOINT mode passesthe four discreet channel audio offour-channel games direct to eachsatellite channel. It does notsynthesize rear channel output, sostereo signal in this mode will playjust through the front two speakersand subwoofer.

The STEREO mode plays the Leftand Right Front speakers and thesubwoofer. It also lets you hearthe stereo downmix from any DVD.

Audio Mode SelectionThe stereo soundtracks of some

movies on the Video CD (VCDformat) contain different lan-guages. For example, a twochannel soundtrack may containMandarin on the right channel andEnglish on the left channel. TheVCD program literature shouldindicate the presence of dual-language soundtracks. Similarly,some movies in the DVD formatwill contain dual-languagesoundtracks. DTT2500 Digital letsyou select one of these languagesand play it through both the Leftand Right speakers.

If there is no indication of whichchannel is which and you hear twodifferent language soundtracks

during stereo playback, select the“LL” and “RR” settings until youfind the language soundtrack youwant.

The Audio Mode selection featurecan only be used with the PCMdigital soundtrack of a Video CD orDVD with a stereo soundtrack, nota DVD encoded with Dolby Digital5.1 sound or Dolby Surround-encoded material. If you have ananalog program with separate leftand right channels (the analogoutput of a CD ROM, or the analogstereo output of a “software” videoCD, for instance), you will have touse the balance control in yourPC’s audio software to mute theundesired channel.

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Using DVD player on TV1. Connect Video Out of the DVD player to Video Input of your television.2. Connect Dolby Digital com- pressed signal output from your DVD player to the DOLBY DIGITAL (AC-3) SPDIF IN of your DTT2500 Digital decoder amplifier unit.3. Press the CMSS button until all its three LEDs are off to disable the Creative Multi Speaker Surround (CMSS) function.

For movies with Dolby Digital 5.1 (AC-3) soundtracks: This signal is detected auto- matically and the DOLBY DIGITAL LED lights up. You will experience Dolby Digital 5.1 channel output.

For two-channel DVD movies which are Dolby Surround-encoded: The Dolby Pro Logic decoder will automatically decode the program for 5.1 channel movie experience.

Applications GuidePlaying DVD Movies:Using PC-DVD player on PC1. Disable the ‘Creative Multi Speaker Surround’ (CMSS) function by pressing the CMSS button until all four LEDs are off.

For movies with Dolby Digital 5.1 (AC-3) soundtracks: This signal is detected auto- matically and the DOLBY DIGITAL LED lights up. You will experience Dolby Digital 5.1 channel output.

For two-channel movies which are Dolby Surround- encoded carried within the Dolby Digital compressed bitstream: The Dolby Pro Logic decoder will automatically decode the program for 5.1 channel movie experience.

Connection Guide for DeskTop Theatre 5.1 DTT2500 Digital with Sound Blaster Live! and Creative PC-DVD system.

DOLBY DIGITAL(AC-3) SPDIF IN

SPEAKER OUTPUTS

LINE IN REAR IN

C SUBWOOFER RS LS R L

15VDC IN

DIGITALDIN

ANALOG AUTO

INPUT

LINE IN

MIC IN

LINE OUT

REAR OUT

AUX_IN

DigitalAudio

AnalogAudio

SUBWOOFERLINE OUT

PC-DVD ROM Drive

4-Channel Sound Card(e.g. Sound Blaster Live!)

MPC-to-MPC CD-Audio Cable

Dolby Digital (AC-3)SPDIF Out

Encore Dxr2 / PC-DVD MPEG2Decoder Card (Luxsonar)

AUDIO_OUT

CD_IN

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Playing VCD Movies:Using PC-DVD player on PC1. Disable the ‘Creative Multi Speaker Surround’ (CMSS) function by pressing the CMSS button until all four LEDs are off.

For VCD movies with Dolby Surround-encoded stereo program: You can use the Dolby Pro Logic decoder, by selecting PRO LOGIC DIGITAL IN, to experience 5.1-channel movie viewing.

For VCD movies: You will have Digital 2.1 channel output. To enhance the experience, enable the Digital Pro Logic by pressing the DOLBY SURROUND button until the DIGITAL IN LED lights up.

Using VCD player on TV1. Connect Video Out of the VCD player to Video Input of your television.2. Connect the Audio Out of the VCD player to the Line In of your DTT2500 Digital decoder amplifier unit.3. Select the MOVIE mode by pressing the Creative Multi Speaker Surround (CMSS) button until the LED for MOVIE mode lights up.

You can experience surroundsound instead of mono/stereosound; all dialog and centralsounds will be heard through thecenter speaker, while music andoff-stage sounds are heardthrough the other four satellites.

Using SoftMPEG player orPlayCenter on PC1. Select the MOVIE mode by pressing the Creative Multi Speaker Surround (CMSS) button until the LED for MOVIE mode lights up.

This mode lets you experience the surround sound with 5.1- channel output; all dialog and central sounds will be heard through the center speaker, while music and off-stage sounds are heard through the other four satellites.

If you are using PlayCenter toplay the VCDs, disable all CMSSeffects in your PlayCenter - useonly DTT2500 Digital CMSSMOVIE mode.

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Playing Microsoft DirectSound3D or Environmental AudioGames1. Under CMSS on your DTT2500 Digital decoder amplifier, select FOURPOINT to fully enjoy the 4-channel gaming experience from Microsoft DirectSound3D or Creative Environmental Audio (EA) titles with a 4- channel audio card.2. For Sound Blaster Live! users, enable the 4-Speaker configuration on your PC. Otherwise, select FourPoint under CMSS on your DTT2500 Digital decoder amplifier unit.

Playing Games:Playing Multi-format DVDGamesThese games have Dolby Digitalor Dolby Pro Logic movie clipsmixed with the actual gamesequence.Select the MUSIC or MOVIE modeby pressing the Creative MultiSpeaker Surround (CMSS) buttonuntil the LED for MUSIC orMOVIE mode lights up.

Playing Conventional GamesSelect MUSIC or MOVIE bypressing the Creative MultiSpeaker Surround (CMSS) buttonuntil the LED for MUSIC orMOVIE mode lights up.

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CD Audio Music:Enjoying CD Audio on PCSelect the MUSIC mode bypressing the Creative MultiSpeaker Surround (CMSS) buttonuntil the LED for MUSIC modelights up. This mode creates anenveloping five-speaker surroundeffect that enhances stereomusic.

Karaoke Music:Singing Karaoke on PC with SBLive! and Creative PC-DVDDecoder Card (with CreativeNavigator application)1. Connect your microphone to the MIC IN of SB Live!.2. Enable the Microphone source in the Mixer.3. Select one of the seven Karaoke modes under Environ ment in Creative Launcher.4. Press the AUDIO MODE button of the DTT2500 Digital decoder amplifier unit until you hear only the music i.e. vocal portion is masked out.

Singing Karaoke on PC with SBLive! only (with CreativePlayCenter)1. Connect your microphone to the MIC IN of SB Live!.2. Enable the Microphone source in the Mixer.3. Select one of the seven Karaoke modes under Environ ment in Creative Launcher.4. Click the Audio Menu button on the Creative PlayCenter to hear only the music, i.e. with the vocal portion masked out.

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Technical SupportInside U.S.A., Canada and Latin AmericaCreative Labs Inc. Technical SupportIf you need technical assistance, call 405-742-6622. Operating hours:(Central Time) Mon-Sat: 8am - 10pm and Sun Noon - 8pm. You can getthe latest program and driver updates from Creative Labs’ bulletin board, 24hours a day. Call 405-742-6660; use modem settings:

Baud rate: 300 to 14400(V.32/V.42 bis)

Data bits: 8Parity: noneStop bits: 1

You can also send a FAX at 405-742-6633 or write us at:

Technical SupportCreative Labs, Inc.1523 Cimarron PlazaStillwater, OK 74075

To reach Creative Technical support via the Internet, visit our technicalsupport web site at http://www.creativehelp.com, for troubleshooting help.

For information about this product and other Creative Labs’ products,visit Creative Zone at http://www.soundblaster.com. Or, call CustomerService at 800-998-1000.

Faxback information is available by calling 405-372-5227.

SpecificationsDeskTop Theater 5.1

DTT2500 DigitalSix-channel

Amplifier SpecificationsLeft, Right, Left Surround, RightSurround amplifiers, each offour: 7 watts RMS per channel

Center Channel amplifier: 21watts per channel

Subwoofer amplifier: 20 wattsper channel

ImportantPlayback LevelsDDT2500 Digital is intended forindividual or small group listeningand will achieve surprisingly highoutput levels. However, playing thesystem continuously at overly loud,distorted levels on heavy bassprogram material may cause itsinternal fuse to blow.

The fuse can be replaced only bya qualified representative. To avoidthis inconvenience and a possiblenon-warranty repair charge, reducethe playback volume when thesystem shows obvious signs ofstress, i.e. it sounds “raspy,”“fuzzy,” and/or “muddy.”

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Inside EuropeCreative Labs (Ireland) Ltd. Technical SupportBallycoolin Business Park, Blanchardstown Dublin,15 Ireland

Ireland Tel: +353 1 820 7555Fax: +353 1 820 5052BBS: +353 1 820 3784 (HST)

+353 1 820 3818 (ZyXEL)Belgium Tel: +32 32300997 (French)(for Benelux) Fax: +32 32300998 (Dutch)

BBS: +32 3281 4631 (HST V.34)+32 3281 4632 (V.34)

Denmark Tel: 8001 7177 (Freephone)BBS: +45 4824 4351 (HST V.34)

+45 4824 4361 (V.34)Finland Tel: 08001 18052 (Freephone)

BBS: +45 4824 4351 (HST V.34)+45 4824 4361 (ZyXEL 19,200)

France Tel: +33 1 39 20 04 21Fax: +33 1 39 20 90 10BBS: +33 1 39 20 90 43 (HST)

+33 1 39 20 90 47 (V.32bis)Minitel: 3615 CREATIVE and 3617 CREATIVE

Germany Tel: +49 089 9579081(for Central and Fax: +49 089 9577453Eastern Europe) BBS: +49 089 9577274

Holland Tel: +3115578244Italy Tel: +39 2 982 4 4100Norway Tel: 800 11663 (Freephone)

BBS: +45 4824 4351 (HST V.34)+45 4824 4361 (ZyTEL 19,200)

Scandinavia Tel: +45 4824 4322Fax: +45 4824 4323

Spain Tel: 900 953536 (Freephone)Sweden Tel: 020 791088 (Freephone)

BBS: +45 4824 4351 (HST V.34)+45 4824 4361 (ZyTEL 19,200)

UK Tel: +44 01734 344 744Fax: +44 01734 320 271BBS: +44 01743 360 287

Operating hoursMon-Fri: Business HoursSat-Sun: ClosedFaxback is a facility that allows you to obtain product and technical infor-mation through facsimile services. In Europe, use the following number:+353 1 820 3667.

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Inside AsiaCreative Technology Ltd. Technical Support31 International Business Park,Creative Resource, Singapore 609921

Tel: +65 8954100Fax: +65 8954999BBS: +65 776 2423

Operating Hours (Singapore Time)Mon-Thu: 9am-6:30pmFri: 9am-6pmSat-Sun & Public Holidays: Closed

This is the sole and expresswarranty. This warranty is in lieuof all other warranties, expressedor implied, of merchantability,fitness for purpose or otherwise.In no event shall CambridgeSoundWorks be liable forincidental or consequentialdamages or have any liabilitywith respect to defects other thanthe obligations set forth asstated.

To ensure warranty coverage, itis incumbent upon the originalpurchaser of DeskTop Theater 5.1DTT2500 Digital to inform theretailer of the defect within thewarranty period. The onlyacceptable method of establish-ing warranty status isa copy of the original proof ofpurchase indicating customersname and purchase date.

1-Year Limited Warrantyo the original purchaser,Cambridge SoundWorks,Inc. (a division of CreativeTechnologies, Ltd.) will

warrant the DeskTop Theater 5.1DTT2500 Digital system to befree of defects in material andworkmanship for a period of one(1) year from date of purchase.With respect to defects, Cam-bridge SoundWorks will, at itsoption, replace the product orrepair the defect in the productwith no charge to the originalpurchaser for parts or labor.

This warranty does not extendto any defect, malfunction orfailure caused by misuse, abuse,accident, faulty hookup, defectiveassociated equipment or use ofthe speaker with equipment forwhich it is not intended.

This warranty is valid onlywhen the speaker is returned tothe retailer that sold the DeskTopTheater 5.1 DTT2500 Digital tothe original purchaser.

T

© 1999 Cambridge SoundWorks, Inc. All rights reserved. Cambridge SoundWorks is a registered trademark, and PCWorks and DeskTop Theater are trademarks of CambridgeSoundWorks, Inc., Newton, MA. The Creative logo and Sound Blaster logo are registered trademarks and the Environmental Audio logo and Creative Multi Speaker Surround aretrademarks of Creative Technology Ltd. The DeskTop Theater 5.1 DTT2500 Digital Dolby Digital Decoder Amplifier is manufactured under the license from Dolby Laboratories. “Dolby”,“Pro Logic”, “AC-3”, and the Double-D symbol are trademarks of Dolby Laboratories. Confidential unpublished works. Copyright 1992-1997 Dolby Laboratories, Inc. All rights reserved.Microsoft and DirectSound are registered trademarks of Microsoft Inc. All other brands and product names are trademarks or registered trademarks of their respective holders. Allspecifications are subject to change without prior notice. Actual contents may differ slightly from those pictured.

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311 Needham Street, Newton, MA 024641-800-367-4434 Fax: 617-527-3194

www.hifi.com or e-mail us at info@hifi.com

Rev. B0420000547

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