English

FCC INFORMATION (for US customers only)
1. IMPORTANT NOTICE : DO NOT MODIFY THIS UNIT! This product, when installed as indicated in the instructions contained in this manual, meets FCC requirements. Modifications not expressly approved by Yamaha may void your authority, granted by the FCC, to use the product. 2. IMPORTANT : When connecting this product to accessories and/or another product use only high quality shielded cables. Cable/s supplied with this product MUST be used. Follow all installation instructions. Failure to follow instructions could void your FCC authorization to use this product in the USA. 3. NOTE : This product has been tested and found to comply with the requirements listed in FCC Regulations, Part 15 for Class B digital devices. Compliance with these requirements provides a reasonable level of assurance that your use of this product in a residential environment will not result in harmful interference with other electronic devices. This equipment generates/uses radio frequencies and, if not installed and used according to the instructions found in the users manual, may cause interference harmful to the operation of other electronic devices. Compliance with FCC regulations does not guarantee that interference will not occur in all installations. If this product is found to be the source of interference, which can be determined by turning the unit OFF and ON, please try to eliminate the problem by using one of the following measures: Relocate either this product or the device that is being affected by the interference. Utilize power outlets that are on different branch (circuit breaker or fuse) circuits or install AC line filter/s. In the case of radio or TV interference, relocate/reorient the antenna. If the antenna lead-in is 300 ohm ribbon lead, change the lead-in to coaxial type cable. If these corrective measures do not produce satisfactory results, please contact the local retailer authorized to distribute this type of product. If you can not locate the appropriate retailer, please contact Yamaha Electronics Corp., U.S.A. 6660 Orangethorpe Ave, Buena Park, CA 90620. The above statements apply ONLY to those products distributed by Yamaha Corporation of America or its subsidiaries.

Congratulations!

You are the proud owner of a Yamaha Digital Processoran extremely sophisticated audio component. This unit takes full advantage of Yamahas undisputed leadership in the field of digital audio processing to bring you a whole new world of listening experiences. Follow the instructions in this manual carefully when setting up your system, and this unit will sonically transform your room into a newest Dolby Stereo Digital theater. With this unit, you will get incredible realism from Dolby Digital (AC-3) encoded video sources. Rather than tell you about the wonders of this unit, however, lets get right down to the business of setting up the system and trying out its many capabilities. Please read this operation manual carefully and store it in a safe place for later reference.

PRECAUTIONS

1. AVOID EXCESSIVE HEAT, HUMIDITY, DUST AND VIBRATION
Keep the unit away from locations where it is likely to be exposed to high temperatures or humiditysuch as near radiators, stoves, etc. Also avoid locations which are subject to excessive dust accumulation or vibration which could cause mechanical damage.
7. HANDLE CABLES CAREFULLY
Always plug and unplug cablesincluding the AC cordby gripping the connector, not the cord.

WARNING

To reduce the risk of fire or electric shock, do not expose this unit to rain or moisture.
8. CLEAN WITH A SOFT DRY CLOTH
Never use solvents such as benzine or thinner to clean the unit. Wipe clean with a soft, dry cloth.
Voltage Selector (General Model only)
The voltage selector on the rear panel of this unit must be set for your local mains voltage BEFORE plugging into the AC mains supply. Voltages are 110/120/220/240 AC, 50/60 Hz.
2. INSTALL THE UNIT IN WELL-VENTILATED CONDITION
Install the unit in well-ventilated condition. Otherwise it may not only damage the unit, but also cause fire.
9. USE THIS UNIT WITH THE CORRECT VOLTAGE
The voltage to be used must be the same as that specified on this unit. Using this unit with a higher voltage than that which is specified is dangerous and may result in a fire or other type of accident causing damage. YAMAHA will not be held responsible for any damage resulting from use of this unit with a voltage other than that which is specified.
3. KEEP THE AC POWER PLUG DISCONNECTED DURING VACATION ETC.
When not planning to use this unit for long periods of time (ie., vacation, etc.), disconnect the AC power plug from the wall outlet.
CAUTION (FOR CANADA MODEL) TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT AND FULLY INSERT. FOR CANADIAN CUSTOMER THIS CLASS B DIGITAL APPARATUS MEETS ALL REQUIREMENTS OF THE CANADIAN INTERFERENCECAUSING EQUIPMENT REGULATIONS.

Dolby Digital (AC-3)

The built-in Dolby Digital (AC-3) Decoder leads you into a totally new sound experiences. Dolby Digital (AC-3) is a new generation of multi-channel digital audio technology, or the newest spatial sound processing format developed for 35 mm film-movies by employing a new kind of low bit-rate audio coding. Dolby Digital (AC-3) is a digital surround sound system that provides completely independent multi-channel audio to consumers. In multi-channel form, Dolby Digital (AC-3) provides five full range channels in what is sometimes referred to as a 3/2 configuration: three front channels (left, center and right), plus two surround channels. A sixth bass-only effect channel is also provided for output of LFE (low frequency effect), or low bass effects that are independent of other channels. This channel is counted as 0.1, thus giving rise to the term 5.1 channels in total. Compared to Dolby Pro Logic that is referred to a 3/1 system (left front, center, right front and just one surround channel), Dolby Digital (AC-3) features two surround channels, called stereo or split surrounds, each offering the same full range fidelity as the three front channels. Sound of wide dynamic range reproduced by the five full range channels presents listeners much excitement that has never been experienced before. Precise sound orientation by the discrete digital sound processing expands realism that the original movie possesses.
Digital Sound Field Processing
This unit incorporates a sophisticated digital sound field processor. The processor allows you to electronically expand and change the shape of the audio sound field from audio and video sources, creating a theater-like experience in your listening room.
Laser Disc is a home audio format that could benefit from Dolby Digital (AC-3). In the near future, Dolby Digital (AC-3) will also be applied to DBS, CATV, DVD and HDTV. The ongoing release of Dolby Stereo Digital theatrical films now underway will provide an immediate source of Dolby Digital (AC-3) encoded video software.
Dolby Digital (AC-3) + DSP (CINEMA DSP)
Dolby Digital (AC-3) shows its full ability in a large movie theater, because movie sounds are originally designed to be reproduced in a large movie theater using many speakers. It is difficult to create a sound environment similar to that of a movie theater in your listening room, because the room size, materials of inside walls, the number of speakers, etc. of your listening room is much different from those of a movie theater. Yamaha DSP technology made it possible to present you with nearly the same sound experience as that of a large movie theater in your listening room by compensating for lack of presence and dynamics in your listening room with its original digital sound fields combined with Dolby Digital (AC-3) decoded sound field.
Manufactured under license from Dolby Laboratories Licensing Corporation. Dolby, AC-3, Pro Logic, and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation. Copyright 1992 Dolby Laboratories, Inc. All rights reserved. The following original functions make the surround-sound effect of Dolby Digital (AC-3) become the most suitable for your audio system and the listening conditions.

Dynamic range (sound scale) of source can be changed so that it will be suitable for the listening conditions. Output of low bass from any channel can be assigned to either the MAIN output terminals or SUBWOOFER output terminal to maximize system performance. Output of LFE can be assigned to either the MAIN output terminals or SUBWOOFER output terminal to maximize system performance. The YAMAHA CINEMA DSP logo indicates those programs are created by the combination of Dolby Surround and YAMAHA DSP technology.
Dolby Digital (AC-3) + 2 Digital Sound Fields Digital sound fields are created on the independent left and right surround sides of the Dolby Digital (AC-3) decoded sound field respectively. They create a wide acoustic environment and emphasize surround-effect in the room, letting you feel much presence as if you are watching a movie in a popular Dolby Stereo Digital theater. This combination is available on the sound field program DIGITAL ENHANCED.
Dolby Digital (AC-3) + 3 Digital Sound Fields Digital sound fields are created on the presence side and the independent left and right surround sides of the Dolby Digital (AC3) decoded sound field respectively. They create a wide acoustic environment and much surround effect in the room without losing high channel separation. With wide dynamic range of Dolby Digital (AC-3) sound, this sound field combination lets you feel as if you are watching a movie in the newest Dolby Stereo Digital theater. This will be the most ideal home theater sound at the present time. This combination is available on the sound field program DIGITAL MOVIE THEATER.
CONTROLS & THEIR FUNCTIONS

FRONT PANEL

NATURAL SOUND DIGITAL PROCESSOR DDP-10

1 Display Panel

See page 7.

3 SET MENU

and Buttons. Select functions in the SET MENU mode. Make a setting change or an adjustment for the selected function in the SET MENU mode. These buttons are also used for increasing and decreasing levels in the output balance adjustment using the test tone.

2 POWER Switch

Turns this unit on and off.
4 PARAMETER and + Buttons
5 Sound Field Program Selector Buttons

Select the program DIGITAL, DIGITAL ENHANCED or DIGITAL MOVIE THEATER by pressing the corresponding button. The name of selected program lights up on the display.

DISPLAY PANEL

6 TEST Switch
Used when you make the output balance adjustment to maximize the performance of your audio/video system including this unit. (For details, refer to page 1718.)

TV/DBS DVD/LD

DIGITAL DSP
7 Input Selector Buttons (TV/DBS, DVD/LD)
Select the source which you want to listen to. When the TV/DBS is selected, the source connected to the TV/DBS input jack(s) of this unit is selected, and when the DVD/LD is selected, the source connected to the DVD/LD input jack(s) of this unit is selected. The currently selected input source is shown on the display panel (as TV/DBS or DVD/LD).
Input Source Indicators (TV/DBS, DVD/LD)
Shows the currently selected input source.
DIGITAL and DSP Indicators DIGITAL lights up when the built-in Dolby Digital (AC-3) Decoder is on, and DSP lights up when the built-in digital sound field processor is on. When both the Dolby Digital (AC-3) Decoder and the digital sound field processor are on, both indicators light up. Shows the currently selected program, or information for several adjustments or setting changes made on this unit.
3 Multi-informatiom Display

SPEAKER SETUP

Setting Up Your Speaker System
This unit has been designed to provide the best sound field quality with a five-speaker system setup, using one pair of main speakers for main and front effect sound reproduction, one pair of surround speakers for rear effect and surround sounds and one center speaker for dialog. We therefore recommend that you use a five-speaker setup. A four-speaker system excluding a center speaker will still provide impressive ambience and effects, however, and may be a good way to begin with this unit. You can always upgrade to the five-speaker system later.
Use of the Center Dialog Speaker Is Recommended
When playing back a source with the Dolby Digital (AC-3) decoded, dialog etc. are output from the center channel. Therefore, if you want to maximize the performance of your Audio/Video home theater system, it is recommended that you use a center channel speaker. If for some reason it is not practical to use a center speaker, it is possible to enjoy movie viewing without it. Best results, however, are obtained with the full system.

LD (DVD) player TV/Satellite tuner AC OUTLET (UNSWITCHED) The power cord of any audio/video unit can be connected to this outlet. The power to this outlet is not controlled by this units POWER switch. This outlet will supply power to the connected unit even if this unit is turned off. The maximum power that can be connected to this outlet is 100 watts.

COAXIAL DIGITAL OUT

OPTICAL DIGITAL OUT

COAXIAL

DIGITAL INPUT

COAXIAL OPTICAL OPTICAL

CENTER

6CH DISCRETE OUTPUT

MAIN SURROUND

To AC outlet

SUBWOOFER

I00W MAX. UNSWITCHED

AC OUTLET

(Europe Model)

Amplifier or Receiver
6CH DISCRETE INPUT DVD/LD TV/DBS

MAIN CENTER SURROUND

1 : Optical fiber cable (Not included) 2 : Connection cord (Not included)

SUB WOOFER

CONNECTING TO THE AMPLIFIER OR RECEIVER
For connections with the amplifier or receiver, use the included connection cords.
CONNECTING WITH AN LD (DVD) PLAYER, TV/SATELLITE TUNER, ETC.
Connect an LD player, DVD player, TV/Satellite tuner etc. which outputs digital audio signals encoded with the Dolby Digital (AC-3) to this unit. Two audio/video units can be connected to this unit. Connect an audio/video unit (LD player, DVD player, etc.) to the DVD/LD COAXIAL or OPTICAL digital signal input jack of this unit. In the same way, connect another unit (TV/Satellite tuner, etc.) to the TV/DBS COAXIAL or OPTICAL digital signal input jack of this unit. To make a connection between optical digital audio signal jacks, remove the cover from each jack, and then connect them by using a commercially available optical fiber cable that conforms to EIAJ standards. Other cables might not function correctly. Even if you connect an audio/video unit to the OPTICAL (or COAXIAL) jack of this unit, you must keep the unit connected with analog audio signal input jacks of the amplifier (or receiver), because the 6 channel discrete signals cannot be recorded by a tape deck or VCR connected to the amplifier (or receiver). NOTE: Be sure to attach the covers when the OPTICAL jacks are not being used, in order to protect the jacks from dust. NOTE: All digital audio signal input jacks are applicable to the sampling frequency of 32 kHz, 44.1 kHz and 48 kHz.

DVD player

LD player
PCM/ DIGITAL (AC-3) 1 OUT
AC-3 RF OUT AC-3 RF IN 2 RF demodulator (Yamaha APD-1 etc.)

DIGITAL INPUT DVD/LD

COAXIAL OPTICAL
: If PCM signals (digital signals not encoded with the Dolby Digital (AC-
3)) are input to this unit, they cannot be output from the 6CH DISCRETE OUTPUT jacks of this unit.
: If you want to input the signals from the DVD player to the DVD/LD
COAXIAL input jack of this unit surely, it is recommended to switch off the RF demodulator. However, if your RF demodulator is the Yamaha model APD-1, you do not have to switch it off.
SELECTING THE OUTPUT MODES SUITABLE FOR YOUR SPEAKER SYSTEM
This unit provides you the following four functions to determine the method of distributing output signals to speakers suitable for your audio system. When speaker connections are all completed, select a proper position on each function to make the best use of your speaker system.
1. CENTER SPEAKER 2. REAR SPEAKER 3. MAIN SPEAKER 4. LFE/BASS OUT
DESCRIPTION OF EACH FUNCTION
1. CENTER SPEAKER (CNTR SP) Choices: NRML/WIDE/PHNTM Preset position: NRML NRML (Normal): Select this position when you use a center speaker that is smaller than the main speakers. In this position, low bass signals (below 90 Hz) at the center channel are output from the MAIN output jacks (or the SUBWOOFER output jack if the SMALL position is selected on 3. MAIN SPEAKER and the SWFR position is selected on 4. LFE/BASS OUT). WIDE: Select this position when your center speaker is approximately the same size as the main speakers. PHNTM (Phantom): Select this position when you do not have a center speaker. The center channel sound will be output from the left and right main speakers. 2. REAR SPEAKER (REAR SP) Choices: SMALL/LARGE Preset position: SMALL SMALL: Select this position if your rear surround speakers do not have a high ability for bass reproduction. In this position, low bass signals (below 90 Hz) at the rear surround channels are output from the SUBWOOFER output jacks (or the MAIN output jacks if the MAIN position is selected on 4. LFE/BASS OUT). LARGE: Select this position if your rear surround speakers have a high ability for bass reproduction, or a subwoofer is connected to the rear surround speaker in parallel. In this position, full range signals are output from the SURROUND output jacks.
3. MAIN SPEAKER (MAIN SP) Choices: SMALL/LARGE Preset position: LARGE SMALL: Select this position if your main speakers do not have a high ability for bass reproduction. However, if your system does not include a subwoofer, do not select this position. In this position, low bass signals (below 90 Hz) at the main channels are output from the SUBWOOFER output jack (if the SWFR or BOTH position is selected on 4. LFE/BASS OUT). LARGE: Select this position if your main speakers have a high ability for bass reproduction. In this position, full range signals present at the main channels are output from the MAIN output jacks.

(Center)

(Right main)

(Right surround)

(Left surround)
1. Turn down the volume to a minimum level on the amplifier or receiver. 2. Press the TEST switch.
NOTE: If not using a center speaker, be sure to set the function 1. CENTER SPEAKER in the SET MENU mode to the PHNTM (phantom) position. You will then hear the center channel test tone from the left and right main speakers. CONTINUED
4. When TEST CENTER dB is shown on the display, adjust the level of test tone from the center speaker by pressing the PARAMETER + or button so that it becomes almost as same as that of the main speakers. * While adjusting, the test-tone is fixed on the selected speaker.
NOTE: Once you have completed these adjustments, use only the master VOLUME control of the amplifier (or receiver) to adjust the whole listening volume. Do not change any other volume setting in the system.

Adjustable

* Pressing + increases and decreases the value. Pressing and holding the button will change the value continuously.
5. In the same way, when TEST R SUR. dB is shown on the display, adjust the level of test tone from the right surround speaker so that it becomes almost as same as that of the main speakers. 6. In the same way, adjust the level of test tone from the left surround speaker. 7. When adjustments are finished, press the TEST switch once again.
ADJUSTMENTS IN THE SET MENU MODE
The following nine types of functions maximize the performance of your system and expand your enjoyment for audio listening and video watching.
METHOD OF SETTING CHANGE AND ADJUSTMENT Operations should be made watching information on this units display panel.
1. Select the function (title) on which you will make a change.
1. CENTER SPEAKER 2. REAR SPEAKER 3. MAIN SPEAKER 4. LFE/BASS OUT 5. LFE LEVEL 6. CENTER DELAY 7. SURROUND DELAY 8. DYNAMIC RANGE 9. OUTPUT TRIM
2. Select any desired position or edit parameters on the function.
In the same way, make a setting change or adjustment on any other function.
DESCRIPTIONS OF THE FUNCTIONS 1. CENTER SPEAKER 2. REAR SPEAKER 3. MAIN SPEAKER 4. LFE/BASS OUT 6. CENTER DELAY (Adjusting the delay of center sounds (dialog etc.))
Control range: 0 ms to 5 ms (in 1 ms step) Preset value: 0 ms Adjusts the delay between the main sounds (at the main channels) and dialog etc. (at the center channel). The larger the value, the later the dialog etc. is generated. This is for making sounds from the left main, center and right main speakers reach your listening position at the same time by delaying the sound from the center speaker if the distance from the center speaker to your listening position is shorter than the distance from the left or right main speaker to your listening position.

See pages 14 to 16 for details. (Once you have selected proper modes, you do not have to make a setting change until any alteration is made in your speaker system.)
5. LFE LEVEL (Adjusting the output level at the LFE (low frequency effect) channel)
Control range: 20 dB to 0 dB (in 1 dB step) Preset value: 0 dB Adjusts the output level at the LFE (low frequency effect) channel. If the LFE signals are mixed with signals at other channels to output them from the same speakers, the ratio of LFE signal level to the level of other signals are adjusted. (See page 3 for details about the LFE channel.)
7. SURROUND DELAY (Adjusting the delay of rear surround sounds)
Control range: 0 ms to 15 ms (in 1 ms step) Preset value: 15 ms Adjusts the delay between the main sounds (at the main channels) and surround sounds. (at the rear channel). The larger the value, the later the surround sounds is generated.
8. DYNAMIC RANGE (Adjusting dynamic range)
Choices: MAX/STD/MIN Preset position: MAX MAX: Dynamic range is the difference between the maximum level and the minimum level of sounds. Sounds on a movie originally designed for movie theaters feature very wide dynamic range. Dolby Digital (AC-3) technology can bring the original sound track into a home audio format with this wide dynamic range unchanged. In this position, a source encoded with the Dolby Digital (AC-3) is reproduced in the original sound tracks wide dynamic range providing you with powerful sounds like a movie theater. Selecting this position will be more ideal if you can listen to a source in a high output level in a room specially soundproofed for audio/video enjoyment. STD (Standard): Powerful sounds of extremely wide dynamic range are not always suitable for home use. Depending upon the condition of your listening environment, it may not possible to increase the sound output level as high as a movie theater, however, in a level proper for listening to in your room, the low level parts of source sound cannot be heard as well because they will be lost among noises in your environment. Dolby Digital (AC-3) technology also makes it possible to reduce an original sound tracks dynamic range for a home audio format by compressing the data. In this position, a source encoded with the Dolby Digital (AC-3) is reproduced in the compressed dynamic range of the source suitable for low level listening.

In this position, dynamic range is more reduced than in the STD position. Selecting this position will be effective when you must listen to a source in extremely low level.
9. OUTPUT TRIM (Adjusting the whole level of signals output from this unit)
Control range: 9 dB to 9 dB (in 1 dB step) Preset value: 0 dB Adjusts the whole level of signals output from the 6CH DISCRETE OUTPUT jacks on the rear of this unit.
Memory back up Setting changes and adjustments you made the last time will remain memorized even if the power of this unit is switched off or the power cord is disconnected. However, if the power is not supplied for more than about two weeks, they will be automatically changed back to the original settings.

OPERATIONS

To enjoy listening to a source with the Dolby Digital (AC-3) decoded
1. Turn down the volume to a minimum level on the amplifier or receiver.
The name of selected input source lights up.
2. Turn on the power of this unit and other audio/video units to be used.
The program which was used when the same input source was selected the last time will automatically recalled and its name is shown.
5. If desired, select another program.
DIGITAL ENHANCED DIGITAL MOVIE THEATER
3. On the amplifier or receiver, select the 6-ch. (or 5-ch.) discrete signals sent from this unit as the input source. * For details about the sound field programs, refer to page 23. 4. Select the input source to play.
6. Play the source and turn up the volume to a desired listening level gradually on the amplifier or receiver.
To select the audio/video unit connected to the DVD/LD jack(s) of this unit, press the DVD/LD button. To select the audio/video unit connected to the TV/DBS jack(s) of this unit, press the TV/DBS button.
SELECTING SOUND FIELD PROGRAMS
This unit provides you with three sound field programs ( DIGITAL, DIGITAL ENHANCED and DIGITAL MOVIE THEATER) to enjoy listening to an audio/video source with the Dolby Digital (AC-3) decoded. To select a program, simply press a sound field program selector button for the desired program. The name of selected program appears on the display panel. To select
* The following indicators on the display panel show you what sound processing is being made.
Lights up when the Dolby Digital (AC-3) is being decoded
Lights up when the Digital Sound Field Processing is being made

DIGITAL:

NOTES When the power of this unit turns on or when the input source is changed to the other, the program which was used when the currently selected input source was selected the last time will automatically recalled. When no signal is input or signals not encoded with the Dolby Digital (AC-3) are input to this unit, NO DOLBY DGTL appears on the display panel, and no signal is output from the 6CH DISCRETE OUTPUT jacks of this unit. When the input signals encoded with the Dolby Digital (AC-3) are in 2-channels only, DOLBY DGTL 2ch appears on the display panel, and the signals are output from this unit without the Digital Sound Field Processing. Make sure that the source you will play is encoded with Dolby Digital (AC-3). Dolby Digital (AC-3) will not be decoded if the source is not encoded with Dolby Digital (AC-3).

To select

DIGITAL ENHANCED:
To select DIGITAL MOVIE THEATER:
DESCRIPTIONS OF THE SOUND FIELD PROGRAMS

DIGITAL (

) The built-in Dolby Digital (AC-3) decoder precisely reproduces sounds and sound effects of a source encoded with the Dolby Digital (AC-3). The realization of a highly efficient decoding process improves crosstalk and channel separation and makes sound positioning smoother and more precise.

DIGITAL MOVIE THEATER (

This program is ideal for precisely reproducing the sound design of the newest Dolby Digital multi-track films. The sound field is made to be similar to that of the newest movie theaters, so the reverberations of the sound field itself are restrained as much as possible. The three dimensional feeling of the sound field is emphasized, and dialog is precisely oriented on the screen. You can enjoy watching SciFi, adventure movies, etc. with much presence.

DIGITAL ENHANCED (

This program ideally simulates the multisurround speaker systems of the Dolby Stereo Digital theater. The Dolby Digital (AC-3) decoding and the digital sound field processing is precisely performed without altering the originally designed sound orientation. The surround effects produced by this sound field folds the viewer naturally from the rear to the left and right and toward the screen.
NOTES The Dolby Digital (AC-3) Decoder is designed to be used with program material (mainly movie soundtracks) encoded with the Dolby Digital (AC-3). The consequence of signal processing depends on the mode of Dolby Digital (AC-3) encoded on the signals of source. For example, if the input signals of source encoded with the Dolby Digital (AC-3) are in 2-channels only, the decoded signals are output from this unit in 2-channels, no matter what program is selected.

TROUBLESHOOTING

PROBLEM Power does not come on. Hum. No sound. POSSIBLE CAUSE AC cord not properly plugged in. Bad cable connection. Bad or incorrect input or output connections. Incorrect input source selection. Improper input mode selection on the amplifier The signals input to this unit are not encoded with the Dolby Digital (AC-3). The setting of CENTER SPEAKERS is in PHNTM. The input signals of source encoded with the Dolby Digital (AC-3) do not have center channel signals. The setting of LFE/BASS OUT is in the SWFR or BOTH position, though your system does not include a subwoofer. Output mode selection for each channel (MAIN, CENTER or REAR SPEAKER) is improper. Sound output level to the center speaker is decreased. Sound output level to either or both of the rear surround speakers is decreased. The output level of LFE (LFE LEVEL) is low. Output level (OUTPUT TRIM) adjustment on this unit is low. The setting of the DYNAMIC RANGE is at the MAX position. This unit is too close to the affected equipment. WHAT TO DO Carefully plug AC plug into outlet. Firmly plug in all connection cables. Check connections. Select the input selector button for the source to be played. Select the 6 channel discrete signals sent from this unit as the input source. Refer to the instructions for the audio/video unit sending signals to this unit or the source played on the unit. Select the NRML or WIDE position. Refer to the instructions for the source currently played. Select the MAIN position.

No sound from the center speaker.

Poor bass reproduction.

Make output mode selections suitable for your speaker system. Increase the level. Increase the level.
Sound output level to the center speaker is lower than other speakers. Sound output level to either or both of the rear surround speakers is lower than other speakers. No output of LFE sound. Whole sound level is low, even though the volume is increased on the amplifier. The difference of sound level between a high level part and a low level part is too great. Noise from nearby TV or tuner.
Increase the level. Increase the level. Select the STD position.
Move the unit further away from the affected equipment.

SPECIFICATIONS

Output Level/Impedance MAIN L/R, CENTER, SURROUND L/R 1 kHz, 0 dB INPUT... 2V/1.2 k SUBWOOFER 50 Hz, 0 dB INPUT... 6V/1.2 k Input Impedance COAXIAL.... 75 Frequency Response (20 Hz 20 kHz) MAIN L/R, CENTER, SURROUND L/R (LARGE).. 01 dB Total Harmonic Distortion MAIN L/R, CENTER, SURROUND L/R (1 kHz). 0.01% or less SUBWOOFER (50 Hz)... 0.01% or less Signal-to-Noise Ratio (IHF-A) MAIN L/R.... 105 dB or more Filter Characteristics MAIN L/R, CENTER, SURROUND L/R (SMALL) H.P.F.... fc=90 Hz, 12 dB/oct. SUBWOOFER L.P.F... fc=90 Hz, 24 dB/oct. Power Supply U.S.A. and Canada models... AC 120V/60 Hz Europe and U.K. models.. AC 230V/50 Hz General model.. AC 110/120/220/240V 60/50 Hz Power Consumption... 25W AC Outlet 1 UNSWITCHED OUTLET.. 100W max. Dimensions (W x H x D).. 5.28 mm (11 )61/51-31 4/1-3 Weight... 4.0 kg (8 lbs. 13 oz.) Accessories.. Connection cord (2-pins) 2 Connection cord (1-pin) 2
* Specifications are subject to change without notice.
YAMAHA YAMAHA YAMAHA YAMAHA YAMAHA YAMAHA YAMAHA
ELECTRONICS CORPORATION, USA 6660 ORANGETHORPE AVE., BUENA PARK, CALIF. 90620, U.S.A. CANADA MUSIC LTD. 135 MILNER AVE., SCARBOROUGH, ONTARIO M1S 3R1, CANADA ELECTRONIK EUROPA G.m.b.H. SIEMENSSTR. 22-34, 25462 RELLINGEN BEI HAMBURG, F.R. OF GERMANY ELECTRONIQUE FRANCE S.A. RUE AMBROISE CROIZAT BP70 CROISSY-BEAUBOURG 77312 MARNE-LA-VALLEE CEDEX02, FRANCE ELECTRONICS (UK) LTD. YAMAHA HOUSE, 200 RICKMANSWORTH ROAD WATFORD, HERTS WD1 7JS, ENGLAND SCANDINAVIA A.B. J A WETTERGRENS GATA 1, BOX 30053, VSTRA FRLUNDA, SWEDEN MUSIC AUSTRALIA PTY, LTD. 17-33 MARKET ST., SOUTH MELBOURNE, 3205 VIC., AUSTRALIA

VY99690

R C LS R S
NATURAL SOUND DIGITAL PROCESSOR
NATURAL SOUND DIGITAL PROCESSOR DDP1

PARAMETER

CONTENTS
Safety Instructions... 2 Profile of This Unit... 4 Speaker System Setup.. 5 Connections... 6 Turning On/Off the Power of This Unit. 8 Table of Functions... 9 Adjustments Before Operation.. 10 Playing an AC-3 Source.. 14 Adjusting Output Levels. 14 Adjusting Delays and Dynamic Range. 16 Specifications... 18 Troubleshooting.. 18 Block Diagram.. 19

OWNERS MANUAL

IMPORTANT! Please record the serial number of this unit in the space below. Serial No.: The serial number is located on the rear of the unit. Retain this Owners Manual in a safe place for future reference.

SAFETY INSTRUCTIONS

CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN
Wall or Ceiling Mounting The unit should be mounted to a wall or ceiling only as recommended by the manufacturer. Ventilation The unit should be situated so that its location or position does not interfere with its proper ventilation. For example, the unit should not be situated on a bed, sofa, rug, or similar surface, that may block the ventilation openings; or placed in a built-in installation, such as a bookcase or cabinet that may impede the flow of air through the ventilation openings. Heat The unit should be situated away from heat sources such as radiators, stoves, or other appliances that produce heat.
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
Explanation of Graphical Symbols
The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert you to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert you to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
10 Power Sources The unit should be connected to a
power supply only of the type described in the operating instructions or as marked on the unit.
11 Power-Cord Protection Power-supply cords should be
routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the unit.
12 Cleaning The unit should be cleaned only as
recommended by the manufacturer.
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.
13 Nonuse Periods The power cord of the unit should be
unplugged from the outlet when left unused for a long period of time.
Read Instructions All the safety and operating instructions should be read before the unit is operated. Retain Instructions The safety and operating instructions should be retained for future reference. Heed Warnings All warnings on the unit and in the operating instructions should be adhered to. Follow Instructions All operating and other instructions should be followed. Water and Moisture The unit should not be used near water for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, etc. Carts and Stands The unit should be used only with a cart or stand that is recommended by the manufacturer.

PROFILE OF THIS UNIT

Thank you for purchasing the Yamaha DDP-1, a sophisticated digital sound processor designed specifically for decoding Dolby AC-3. This unit consists of an AC-3 RF demodulator, an AC-3 decoder and other original Yamaha functions developed using the newest technology to reproduce AC-3 encoded sources precisely as movie sound creators intended. AC-3 will lead listeners into a totally new sound experience. This unit is equipped with discrete terminals for sending AC-3 multi-channel audio signals individually. The audio amplifier or receiver must have discrete input terminals to receive the signals from the DDP-1. The use of Yamaha RX-V2090, a multi-channel audio/video receiver equipped with discrete input terminals combined with this unit is an ideal choice for the purpose of experiencing AC-3 sound, and this is the best system we recommend.

Whats Dolby AC-3?

Dolby AC-3 is a new generation of multi-channel digital audio technology, or the newest spatial sound processing format developed for 35 mm film-movies by employing a new kind of low bit-rate audio coding. Dolby Surround AC-3 is a digital surround sound system that provides completely independent multi-channel audio to consumers. In multi-channel form, Dolby Surround AC-3 provides five full range channels in what is sometimes referred to as a 3/2 configuration: three front channels (left, center and right), plus two surround channels. A sixth bass-only effect channel is also provided for output of LFE (low frequency effect), or low bass effects that are independent of other channels. This channel is counted as 0.1, thus giving rise to the term 5.1 channels in total. Compared to Dolby Pro Logic that is referred to a 3/1 system (left front, center, right front and just one surround channel), Dolby Surround AC-3 features two surround channels, called stereo or split surrounds, each offering the same full range fidelity as the three front channels. Sound of wide dynamic range reproduced by the five full range channels presents listeners much excitement that has never been experienced before. Precise sound orientation by the discrete digital sound processing expands realism that the original movie possesses. Laser Disc is a home audio format that could benefit from Dolby AC-3. In the near future, Dolby AC-3 will also be applied to DBS, CATV, DVD and HDTV. The ongoing release of Dolby Stereo Digital theatrical films now underway will provide an immediate source of AC-3 encoded video software.
Manufactured under license from Dolby Laboratories Licensing Corporation. Dolby, AC-3, and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation. Copyright 1992 Dolby Laboratories, Inc. All rights reserved.

Features of this unit

Dynamic range (sound scale) of source can be
changed so that it will be suitable for the listening conditions.

Test tone generator helps you adjust speaker level

balance.

Center channel output can be sent to the main
speakers if you do not use a center channel speaker.
Output of low bass from any channel can be
assigned to either the MAIN OUTPUT terminals or SUBWOOFER OUTPUT terminal to maximize system performance.
Three types of inputs (AC-3 RF, AC-3 Digital
Optical and Coaxial) are available for future use.
Output of LFE can be assigned to either the MAIN
OUTPUT terminals or SUBWOOFER OUTPUT terminal to maximize system performance.

SPEAKER SYSTEM SETUP

As described on page 4, we recommend you to use this unit connecting with the Yamaha RX-V2090. If you have already set up a speaker system for the RX-V2090, you do not need to prepare a new speaker system for this unit. Some functions on this unit have been already preset to be suitable when this unit is used with a speaker system for the RX-V2090. (Refer to page 10 for details about those functions.) This unit will provide the best performance with a five-speaker system setup: one pair of main speakers for main sound reproduction, one pair of surround speakers for effect and surround sounds and one center speaker for dialog. A simple speaker system excluding a center speaker will still provide impressive ambience and effects, however, and may be a good way to begin with this unit. You can always upgrade to the five speaker system later. * For the best performance of the RX-V2090, the system needs one more pair of surround speakers at the front position. (Refer to the owners manual of the RX-V2090 for details.) Main speakers should be high performance models and have enough power handling capacity to accept the maximum output of your system. Surround speakers and a center speaker do not have to be equal to the main speakers. For precise sound localization, however, it is ideal to use high performance models that can reproduce sounds in full range. If for some reason it is not practical to use a center speaker, you can enjoy AC-3 effect without it. Best results, however, are obtained with the full system.
Speaker system configurations

Five-speaker system

Main L Center Main R
A simple system without a center speaker

Main L Main R

Surround L

Surround R

Set the center channel mode (C2. CENTER SP.) to the SML or LRG position. (See page 10.)
Set the center channel mode (C2. CENTER SP.) to the PHANTOM position. (See page 10.)
Note If you will add a subwoofer in your system that includes the RX-V2090, connect the subwoofer to the LOW PASS terminal of the RX-V2090. In doing so, the overall adjustment of speaker output levels including the subwoofer can be done with the master VOLUME control of the RX-V2090.

Speaker placement

Main: Main R In normal position. (The position of your present stereo speaker system.)
Surround: Behind your listening position, facing slightly inward. Nearly six feet (approx. 1.8 m) up from the floor. Center: Precisely between the main speakers. (To avoid interference with TV sets, use a magnetically shielded speaker.)

Main L Center Surround R

CONNECTIONS
Before attempting to make any connections to or from this unit, be sure to first switch OFF the power to this unit and to any other components to which connections are being made.
When making connections between this unit and other components, be sure all connections are made correctly, L (left) to L, R (right) to R. Also, refer to the owners manual for each component to be connected to this unit.

AC-3 RF OUT

AC-3 laserdisc player or another AC-3 unit
Audio cord (not included) (U.S.A. model)

Refer to the next page.

AC OUTLET
UNSWITCHED I20V 60Hz I.6A MAX. 200W MAX.
MAIN AC3 RF AC3 DIGITAL OPTICAL COAXIAL

OUTPUT

CENTER SURROUND

SUBWOOFER

Refer to Note 2 below. Audio cords (included)

Refer to Note 1 below.

To AC outlet

LD/TV MAIN

Audio cords (included)

5CH DISCRT INPUT

LD/TV CENTER

LD/TV SURROUND

Amplifier or receiver (RX-V2090 etc.) equipped with 5-ch discrete AC-3 terminals

Note 1)

If this unit is connected to the RX-V2090, no connection is needed to this terminal. By the output mode selections on function C2 to C5, low frequency signals including signals from the LFE channel can be output from the main L and R speakers. (See page 10 for details.) If the amplifier has a discrete subwoofer input terminal, connect it with this units SUBWOOFER OUTPUT terminal.

Note 2)

Do not connect a normal audio output terminal of a laserdisc player etc. to this units AC-3 RF terminal.
AC-3 DIGITAL OPTICAL/COAXIAL terminals
AC3 DIGITAL OPTICAL COAXIAL

AC OUTLET (UNSWITCHED)

These terminals input AC-3 signals in digital signal format. They are provided for future use. * Do not remove the cover of the OPTICAL terminal unless you will use this terminal in order to protect the terminal from dust.

The power cord of any audio/video unit can be connected to this outlet. The power to this outlet is not controlled by this units POWER switch. This outlet will supply power to the connected unit even if this unit is turned off. The maximum power that can be connected to this outlet is 200 watts.
TURNING ON/OFF THE POWER OF THIS UNIT
Turn on the power of this unit when you will play an AC-3 source (an AC-3 laserdisc etc.), or if you desire to make some adjustments or mode setting changes to this unit.

To turn on the power

Press the POWER switch.
The display turns on and shows this message for about 2 seconds, and then turns into the following messages.

YA M A H A AC 3 DECODER

When an AC-3 data is input to this unit, the characteristics of the data (from the source) are shown. ex.)
When there is no data input, or data other than AC-3 is input to this unit, the input terminal on the rear of this unit used for connection is shown. ex.)

AC 3 fs=48k

DECODING ch : 3/2

Audio code

N O A C 3 D ATA INPUT RF

Sampling frequencies

To turn off the power
Press the POWER switch so that the display turns off.
About the Audio Code Audio code shows the formation and the number of channels.

ch : 3/2

3:Three channel outputs at the front:
left main, center and right main 2:Two channel outputs at the front: left main and right main 1:Center channel output only at the front
2:Two channel outputs at the rear:
left surround and right surround
1:Monaural surround channel output

at the rear

0:No output at the rear

TABLE OF FUNCTIONS

The following 15 functions on this unit allows you to change several adjustments and mode settings for enhancing the performance of your audio system including this unit. For adjustment or mode setting change on each menu function, refer to page 1017. MODE (Category) A MENU (Function) 1. CENTER DELAY 2. SURROUND DELAY 3. DYNAMIC RANGE 4. HIGH LEVEL CUT SCALE* 5. LOW LEVEL BOOST SCALE* B 1. TEST: OFF/ON PARAMETER (Control range/Choices) 0 ms to 5 ms 0 ms to 15 ms MAX/STANDARD 0.0 to 1.0 0.0 to 1.0 LEFT/CENTER/RIGHT/ RIGHT SURROUND/ LEFT SURROUND 6 dB to +6 dB 6 dB to +6 dB MUTE, 20 dB to 0 dB 9 dB to 0 dB RF/OPTICAL/COAXIAL SMALL/LARGE/PHANTOM SMALL/LARGE SMALL/LARGE MAIN/SUBWOOFER Preset value (Position) 0 ms 5 ms MAX 1.0 1.0 OFF Step of change 1 ms 1 ms 0.2 0.2

2. LEFT SURROUND LEVEL 3. RIGHT SURROUND LEVEL 4. LFE MIX LEVEL 5. OUTPUT TRIM C 1. INPUT 2. CENTER SPEAKER 3. REAR SPEAKERS 4. MAIN SPEAKERS 5. LFE/BASS OUT
0 dB 0 dB 0 dB 0 dB RF SMALL SMALL LARGE MAIN

1 dB 1 dB 1 dB 0.5 dB

Note * : Items A4 and A5 are adjustable only when item A3 is set to STANDARD.

Memory back up

Parameter changes you made the last time will remain memorized even if the power of this unit is switched off or the power cord is disconnected. However, if the power is not supplied for more than about two weeks, all parameters will be automatically changed back to the original settings.
ADJUSTMENTS BEFORE OPERATION
SELECTING THE INPUT AND OUTPUT MODES SUITABLE FOR YOUR SPEAKER SYSTEM
This unit provides you the following five functions to determine the modes of input and distribution of output signals to speakers suitable for your audio system. C4 and C5 have been already preset in the position suitable for using this unit with the RX-V2090.
C1. INPUT C2. CENTER SPEAKER C3. REAR SPEAKERS C4. MAIN SPEAKERS C5. LFE/BASS OUT
Description of each function

C1. INPUT

Choices: RF/OPT./COAX. Preset position: RF Selects the name of the input terminal on the rear of this unit used for the connection with an AC-3 laserdisc player or another AC-3 unit.

C4. MAIN SPEAKERS

Choices: SMALL/LARGE Preset position: LARGE SMALL: Select this position if your main speakers do not have a high ability for bass reproduction. However, if your system does not include a subwoofer, do not select this position. In this position, low bass signals (below 90 Hz) at the main channels are output from the SUBWOOFER OUTPUT terminals (if the SUBWOOFER position is selected on C5. LFE/BASS OUT). LARGE: Be sure to select this position, if this unit is connected to an amplifier or receiver (RX-V2090 etc.) equipped with 5-ch discrete AC-3 input terminals. In this position, full range signals present at the main channels are output from the MAIN OUTPUT terminals. Select this position if your main speakers have a high ability for bass reproduction.

C2. CENTER SPEAKER

Choices: SML/LRG/PHANTOM Preset position: SML SML: Select this position when you use a center speaker that is smaller than the main speakers. In this position, low bass signals (below 90 Hz) at the center channel are output from the MAIN OUTPUT terminals. LRG: Select this position when your center speaker is approximately the same size as the main speakers. PHANTOM: Select this position when you do not have a center speaker. The center channel sound will be output from the left and right main speakers.

C5. LFE/BASS OUT

Choices: MAIN/SUBWOOFER Preset position: MAIN MAIN: Be sure to select this position, if this unit is connected to an amplifier or receiver (RX-V2090 etc.) equipped with 5-ch discrete AC-3 input terminals. In this position, full range signals present at the main channels, signals from the LFE channel and other low bass signals that are selected on C2 to C4 to be distributed from other channels are output from the MAIN OUTPUT terminals. SUBWOOFER: Select this position if this unit is connected to an amplifier or receiver equipped with a subwoofer (or LFE) input terminal. In this position, signals at LFE channel and other low bass signals that are selected on C2 to C4 to be distributed from other channels are output from the SUBWOOFER OUTPUT terminals.

C3. REAR SPEAKERS

Choices: SMALL/LARGE Preset position: SMALL SMALL: Select this position if your rear surround speakers do not have a high ability for bass reproduction. In this position, low bass signals (below 90 Hz) at the surround channels are output from the MAIN OUTPUT terminals. LARGE: Select this position if your rear surround speakers have a high ability for bass reproduction, or a subwoofer is connected to the surround speaker in parallel. In this position, full range signals are output from the SURROUND OUTPUT terminals.
Method of changing selections

Turn the power on.

Press + side or side once or more so that the arrow points the position you will select.
Press once or more until C appears on the left side of the display.

When the adjustments are finished;

B 1. TEST : OFF LEFT

PARAMETER MODE
or Press side once so that the arrow points OFF.
B3. R I GHT SUR. LVL.0 d B

T : OFF

The test tone will stop.

Goes off.

PLAYING AN AC-3 SOURCE 1 2
Turn down the volume to minimum on the amplifier.
Turn the power on to the AC-3 unit, this unit, the amplifier, the monitor etc.
If necessary, change the input mode setting on the amplifier to the 5-ch discrete AC-3 input. * For the RX-V2090, press the LD/TV button on the front panel of the RX-V2090 so that 5 CH DISCRT appears on the display. (Refer to the section Dolby Surround AC-3 of the RX-V2090s manual.)
Play an AC-3 source on the AC-3 unit.
Turn up the volume on the amplifier.
If desired, adjust output levels, delays, dynamic range, etc. on this unit. (See page 1417 for details.)

ADJUSTING OUTPUT LEVELS

The following output level adjustments are possible on this unit. Adjust them as you prefer, monitoring source sound.
B2. LEFT SURROUND LEVEL B3. RIGHT SURROUND LEVEL B4. LFE MIX LEVEL B5. OUTPUT TRIM

B2. LEFT SURROUND LEVEL

Control range: 6 dB to +6 dB (in 1 dB step) Preset value: 0 dB Adjusts the output level at the left surround channel. You had already adjusted the level in OUTPUT BALANCE ADJUSTMENT on page 13, however you can change the level if you wish.

B4. LFE MIX LEVEL

Control range: MUTE, 20 dB to 0 dB (in 1 dB step) Preset value: 0 dB Adjusts the output level at the LFE (low frequency effect) channel. If the LFE signals are mixed with signals at the main channels, only the level of the LFE signals are adjusted. When adjusted to MUTE, only the LFE sound will not be output.

B3. RIGHT SURROUND LEVEL

Control range: 6 dB to +6 dB (in 1 dB step) Preset value: 0 dB Adjusts the output level at the right surround channel. You had already adjusted the level in OUTPUT BALANCE ADJUSTMENT on page 13, however you can change the level if you wish.

B5. OUTPUT TRIM

Control range: 9 dB to 0 dB (in 0.5 dB step) Preset value: 0 dB Adjusts the output level at all channels.
Method of adjusting levels

Adjust the level.

Pressing + increases and decreases the value. Pressing and holding the button will change the value continuously.
Changes. Press once or more until the title of function whose level you will change appears on the display.
Repeat step 2 and 3 to adjust levels on other functions in the same way.
ADJUSTING DELAYS AND DYNAMIC RANGE
This unit provides you with the following functions to make the AC-3 sound field suitable for the conditions of your listening room.
A1. CENTER DELAY A2. SURROUND DELAY A3. DYNAMIC RANGE A4. HIGH LEVEL CUT SCALE A5. LOW LEVEL BOOST SCALE

A1. CENTER DELAY

Control range: 0 ms to 5 ms (in 1 ms step) Preset value: 0 ms Adjusts the delay between the main sounds (at the main channels) and dialog etc. (at the center channel). The larger the value, the later the dialog is generated.

A4. HIGH LEVEL CUT SCALE

Control range: 0.0 to 1.0 (in 0.2 step) Preset value: 1.0 Adjusts the dynamic range of high level signals of source. The larger the value, the range is more reduced. The smaller the value, the range is more widened. Note: This function is available only when the STANDARD position is selected on the function A3.

A2. SURROUND DELAY

Control range: 0 ms to 15 ms (in 1 ms step) Preset value: 5 ms Adjusts the delay between the main sounds (at the main channels) and the effect sounds (at the surround channels). The larger the value, the later the effect sounds are generated.
A5. LOW LEVEL BOOST SCALE
Control range: 0.0 to 1.0 (in 0.2 step) Preset value: 1.0 Adjusts the dynamic range of low level signals of source. The larger the value, the range is more widened. The smaller the value, the range is more reduced. Note: This function is available only when the STANDARD position is selected on the function A3.

A3. DYNAMIC RANGE

Choices: MAX/STANDARD Preset position: MAX Dynamic range is the difference between the maximum level and the minimum level of sounds. Sounds on a movie originally designed for movie theaters feature very wide dynamic range. AC-3 technology can bring the original sound track into a home audio format with this wide dynamic range unchanged. In this position, an AC-3 source is reproduced in the original sound tracks wide dynamic range providing you with powerful sounds like a movie theater. Selecting this position will be more ideal if you can listen to a source in a high output level in a room specially soundproofed for audio/video enjoyment. STANDARD: Powerful sounds of extremely wide dynamic range are not always suitable for home use. Depending upon the condition of your listening environment, it may not possible to increase the sound output level as high as a movie theater, however, in a level proper for listening to in your room, the low level parts of source sound cannot be heard as well because they will be lost among noises in your environment. AC-3 technology also makes it possible to reduce an original sound tracks dynamic range for a home audio format by compressing the data. In this position, an AC-3 source is reproduced in the compressed dynamic range of the source suitable for low level listening. If you desire, you can also adjust the dynamic range on function A4 and A5 only when this position is selected. (See the right side for details.) 16 MAX:

Method of changing the level (or the selection)
Press once or more until A appears on the left side of the display.
Change the level (or the selection). * For changing the value, PARAMETER pressing + increases and decreases the value. Pressing and holding the button will change the value continuously.

A 1. CENT

.0 m s
Press once or more until the title of function whose level (or selection) you will change appears on the display. Changes.
Repeat step 2 and 3 to make changes on other functions in the same way.

A 1. CENTER DELAY.0 m s

SPECIFICATIONS
Output Level/Output Impedance MAIN L/R, CENTER, SURROUND L/R 1 kHz, 0 dB INPUT..2V/1.2 k SUBWOOFER 50 Hz, 0 dB INPUT..6V/1.2 k Input Impedance (RF, COAXIAL)...75 Frequency Response MAIN L/R, CENTER, SURROUND L/R (LARGE) 20 Hz20 kHz...0 1dB Filter Characteristics MAIN L/R, CENTER, SURROUND L/R (SMALL) H.P.F..fc=90 Hz, 12 dB/oct. SUBWOOFER L.P.F...fc=90 Hz, 24 dB/oct. Total Harmonic Distortion MAIN L/R, CENTER, SURROUND L/R (1 kHz)...0.01% or less SUBWOOFER (50 Hz)..0.01% or less Signal to Noise Ratio (IHF-A)..105 dB or more Channel Separation (1 kHz)..80 dB or more Power Supply U.S.A. model..AC 120V, 60 Hz General model.AC 110/120/220/240V, 50/60 Hz Power Consumption..35W AC OUTLET UNSWITCHED x 1..200W max. Dimensions (W x H x D).435 mm x 126 mm x 351.7 mm (17-1/8 x 4-15/16 x 13-7/8) Weight...6.1 kg (13 lbs. 7 oz.)
* Please note that all specifications are subject to change without notice.

TROUBLESHOOTING

If the unit fails to operate normally, check the following points to determine whether the fault can be corrected by the simple measures suggested. If it cannot be corrected, or if the fault is not listed in the SYMPTOM column, disconnect the power cord and contact your authorized YAMAHA dealer or service center for help. SYMPTOM The unit fails to turn on when the POWER switch is pressed. No sound. CAUSE Power cord is not plugged in or is not completely inserted. Incorrect input or output cord connections. Improper input mode selection. Improper input mode selection on the amplifier. Sound hums. Incorrect cord connections. REMEDY Firmly plug in the power cord. Connect the cords properly. If the problem persists, the cords may be defective. Select the proper input mode (RF, OPT or COAX). Select the 5-ch discrete AC-3 input mode on the amplifier. Firmly connect the audio plugs. If the problem persists, the cords may be defective. Select the MAIN position.

Poor bass reproduction.

The setting of LFE/BASS OUT is at the SUBWOOFER position, though your system does not include a subwoofer. Output mode selection for each channel (MAIN, CENTER or REAR) is improper.
Make output mode selections suitable for your speaker system. Increase the level.

Sound output level to either or both of the rear surround speakers is lower than other speakers. No sound from the center speaker. No output of LFE sound. Whole sound level is low, even though the volume is increased on the amplifier. The difference of sound level between a high level part and a low level part is too great. Noise from nearby TV or tuner.
Sound output level to either or both of the rear surround speakers is decreased. The setting of CENTER SP. is at the PHANTOM position. The output level of LFE (LFE MIX LVL) is adjusted to MUTE. Output level (OUTPUT TRIM) adjustment on this unit is low. The setting of the DYNAMIC RANGE is at the MAX position. This unit is too close to the affected equipment.
Select the SML or LRG position. Increase the level. Increase the level.
Select the STANDARD position.
Move this unit further away from the affected equipment.

C4. MAIN SPEAKERS L HPF

2nd order

MAIN L

BLOCK DIAGRAM

AC-3 RF -3dB

DEMODULATOR 20bit D/A R HPF

AC-3 DECODER

MAIN R

OPTICAL

CENTER HPF

COAXIAL

PHANTOM

20bit D/A LS

-4.5dB SURROUND L HPF

LARGE SMALL

B2. LEFT SUR LEVEL HPF
20bit D/A LFE B4. LFE MIX LEVEL +10dB

B3. RIGHT SUR LEVEL LPF

4th order

SURROUND R

SUBWOOFER -4.5dB

-4.5dB

4th order CROSSOVER 90Hz

MAIN SUBWOOFER

FOR REFERENCE
The following table shows what terminal(s) the signals of each channel are output to according to the output mode settings on C2 to C5. (See page 10 for details.)
MAIN OUTPUT C2. CENTER SMALL

90 Hz or less

CENTER OUTPUT

SURROUND OUTPUT

SUBWOOFER OUTPUT

90 Hz or more

C3. REAR

C4. MAIN

90 Hz or more*2

FULL LFE

90 Hz or less (from MAIN, CENTER*3 and REAR*4)

C5. LFE /BASS OUT

90 Hz or less (from MAIN*5, CENTER*3 and REAR*4)
*1 : When C5. LFE/BASS OUT is set at the MAIN position *2 : When C5. LFE/BASS OUT is set at the SUBWOOFER position *3 : When C2. CENTER is set at the SMALL position *4 : When C3. REAR is set at the SMALL position *5 : When C4. MAIN is set at the SMALL position
: The shaded areas show the original settings and output modes.

YAMAHA YAMAHA YAMAHA YAMAHA YAMAHA YAMAHA YAMAHA
ELECTRONICS CORPORATION, USA 6660 ORANGETHORPE AVE., BUENA PARK, CALIF. 90620, U.S.A. CANADA MUSIC LTD. 135 MILNER AVE., SCARBOROUGH, ONTARIO M1S 3R1, CANADA ELECTRONIK EUROPA G.m.b.H. SIEMENSSTR. 22-34, 25462 RELLINGEN BEI HAMBURG, F.R. OF GERMANY ELECTRONIQUE FRANCE S.A. RUE AMBROISE CROIZAT BP70 CROISSY-BEAUBOURG 77312 MARNE-LA-VALLEE CEDEX02, FRANCE ELECTRONICS (UK) LTD. YAMAHA HOUSE, 200 RICKMANSWORTH ROAD WATFORD, HERTS WD1 7JS, ENGLAND SCANDINAVIA A.B. J A WETTERGRENS GATA 1, BOX 30053, VSTRA FRLUNDA, SWEDEN MUSIC AUSTRALIA PTY, LTD. 17-33 MARKET ST., SOUTH MELBOURNE, 3205 VIC., AUSTRALIA

VT89040

Printed in Japan