DSP-A970 CONTENTS DIGITAL SOUND FIELD PROCESSING AMPLIFIER OPERATION MANUAL SAFETY INSTRUCTIONS ............................. Inside Front Cover SETUP & ADJUSTMENT .......................................................... 3 1-1.GETTING STARTED ........................................................... 3 1-2.SETUP ................................................................................ 10 1-3.CONTROLS & ADJUSTMENTS ....................................... 18 1-4.ADJUSTMENT ........................
PRECAUTIONS & SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN 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. 1 Read Instructions – All the safety and operating instructions should be read before the unit is operated. 2 Retain Instructions – The safety and operating instructions should be retained for future reference.
PRECAUTIONS 1 To ensure the finest performance, please read this manual carefully. Keep it in a safe place for future reference. 2 Install your unit in a cool, dry, clean place – away from windows, heat sources, and too much vibration, dust, moisture or cold. Avoid sources of hum (transformers, motors). To prevent fire or electrical shock, do not expose to rain and water. 3 Do not operate the unit upside-down. It may overheat, possibly causing damage. 4 Never open the cabinet.
Congratulations! You are the proud owner of a Yamaha Digital Sound Field Processing (DSP) System—an extremely sophisticated audio component. The DSP system takes full advantage of Yamaha’s undisputed leadership in the field of digital audio processing to bring you a whole new world of listening experiences.
SETUP & ADJUSTMENT Installing the Remote Control Unit Batteries Unpacking Since the remote control unit will be used for many of this unit’s control operations, you should begin by installing the supplied batteries. If you haven’t already done so, carefully remove this unit and its accessories from the box and wrapping material.You should find the unit itself and the following accessories. Remote control Batteries English 1-1. GETTING STARTED 1.
● When you notice that remote control operation has become erratic, or the distance from which the remote control will function has decreased, it’s time to replace the batteries. Always replace all batteries at the same time. ● Make sure that the YPC/USER/LEARN switch on the remote control unit is set to the YPC or USER position for normal operation. ● This remote control uses an advanced, highly directional infrared beam.
Dolby Pro Logic Surround + DSP The Dolby Pro Logic Surround Decoder program lets you experience the dramatic realism and impact of Dolby Surround movie theater sound in your own home. Dolby Pro Logic gets its name from its professional-grade steering logic circuitry, which provides greater effective channel separation for a much higher degree of realism than the “passive” Dolby Surround circuits found in today’s typical home audio/video equipment.
6 Setting Up Your Speaker System Use of the Center Dialog Speaker Is Recommended This unit has been designed to provide the best sound field quality with a full seven-speaker system setup, using two extra pairs of effect speakers to generate the sound field plus one center speaker for dialog, when using Dolby Pro Logic Surround decoding. We therefore recommend that you use a seven-speaker setup.
4 Speaker System 5 Speaker System 6 Speaker System 7 Speaker System Simplest system. Good for Audio/Video sources and Dolby Pro Logic Surround. Good for sound fields from 2-channel stereo sources. This is the recommended speaker system, providing the best sound effects. You can enjoy widely diffused sound by only adding two additional speaker units at the rear. With sound field programs No. 7 through No. 12, which utilize the center speaker effect, more precise center localization can be obtained.
Speakers and Speaker Placement NOTE: The Yamaha NS-C110 speaker, available in some countries, is an ideal choice for the center speaker. Your full seven-speaker system will require three speaker pairs: the MAIN SPEAKERS (your normal stereo speakers), the FRONT EFFECT SPEAKERS, and the REAR EFFECT SPEAKERS, plus the CENTER SPEAKER.You may also be using a subwoofer. You will probably use your present stereo speakers as the MAIN SPEAKER pair.
If you connect your video cassette recorder, video disc player, video monitor, etc. to this unit, you can take advantage of this unit’s capability to display program titles, parameter data and information about other various settings and adjustments on your video monitor’s screen. This information will be superimposed over the video image.
1-2. SETUP Before you start making connections make sure all related electronic components are turned OFF. REAR PANEL (General Model) CAUTION: TO PREVENT ELECTRIC SHOCK, DO NOT USE THIS (POLARIZED) PLUG WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE.
2 Audio/Video Signal Connection Jacks (for Video Source Equipment) Connect the audio and video inputs and/or outputs of your video equipment. In place of the VIDEO jacks, the S VIDEO jacks can be used for higher resolution and improved picture quality if your VCR, monitor, etc. are equipped with S-VIDEO connectors. 3 Front Effect Out Jacks Front-channel line output. Not connected when the built-in amplifier is used.
E Voltage Selector (General Model only) Be sure to set to the line voltage in your area before applying power. Consult your dealer if unsure of the correct setting. F Switched AC Outlets You may plug other audio components into these sockets as long as their combined power consumption does not exceed the specified value shown. “Switched” means that these components are turned on and off by this unit’s power switch. G Unswitched AC Outlet (U.S.A.
English CONNECTING AUDIO/VIDEO SOURCE EQUIPMENTS TO THIS UNIT Video disc player CD player Tuner TV/Satellite tuner Tape deck 1 Tape deck 2 Video cassette recorder 1 Turntable Video cassette recorder 2 Monitor TV 13
CONNECTING TO S VIDEO JACKS If your video cassette recorder, video disc player, etc. and your monitor are equipped with “S” (high-resolution) video terminals, connect them to this unit’s S VIDEO jacks, and connect this unit’s S VIDEO MONITOR OUT jack to the “S” video input of your monitor. Otherwise, connect the composite video jacks from your video cassette recorder, video disc player, etc.
Connect the MAIN speakers to the MAIN speaker output terminals of this unit. Connect the CENTER speaker to the CENTER speaker output terminals. If you will be using one CENTER speaker, connect it to either the A or B terminals and set the CENTER speaker impedance switch to “A or B” (bottom position). If using two CENTER speakers, connect them to the A and B terminals, and set the switch to “A + B” (top position).
CONNECTING THE EFFECT SPEAKERS TO THIS UNIT Connect the FRONT effect speakers to the FRONT effect speaker output terminals of this unit. Front effect speaker Front effect speaker If the FRONT effect speakers are not used, the FRONT MIX switch should be set to “ON”. Connect the REAR effect speakers to the REAR effect speaker output terminals of this unit. NOTE: The speaker connections above are fine for most applications.
CONNECTING SPEAKER SYSTEMS You may wish to add a subwoofer to reinforce the bass frequencies. Connect the SPEAKERS terminals to your speakers with wire of the proper gauge, cut as short as possible. If the connections are faulty, no sound will be heard from the speakers. Make sure that the polarity of the speaker wires is correct, that is, + and – markings are observed. If these wires are reversed, the sound will be unnatural and will lack bass.
1-3. CONTROLS & ADJUSTMENTS FRONT PANEL (General Model) 1 Power Switch * STANDBY Mode (Europe model only) While the power is on, pressing the POWER key on the remote control unit switches the unit to the STANDBY mode. (In this mode, the indicator is half illuminated.) 2 Remote control sensor Signals from the remote control unit are received here. 18 3 Pro Logic Decoder Indicator Illuminates while the built-in Dolby Pro Logic Surround Decoder is being activated.
6 Program Selector Sequentially selects the digital sound field processing programs in the + or – direction. 6 Display Panel Shows program names, parameters and information about other various settings and adjustments. 7 Effect Switch Normally ON, this switch can be turned OFF to disable output from the center and effect speakers. 8 Master Volume Control Simultaneously controls signal level at all outputs: front effect, main, rear effect, center, and subwoofer. (This does not affect TAPE REC OUT level.
REMOTE CONTROL UNIT 1 Transmit/Learn Indicator In Learn mode, lights to indicate that the key just pressed is ready for learning input. In User mode, blinks when a learned key is pressed to show that a control signal has been sent to your equipment. 2 YPC/USER/LEARN Switch Set to YPC for operating this unit and Yamaha equipments. Set to USER for using learned key functions. Set to LEARN for learning new control functions. (See page 37.) (“YPC” is the abbreviation of YAMAHA Preset Code.
G Parameter +/– Keys Edit DSP program parameters, or used for five types of settings/adjustments in the SET/MENU mode. 9 Rear Level +/– Keys Increase (+) or decrease (–) the volume level of the rear effect speakers. H Master Volume +/– Keys Increase (+) or decrease (–) the master volume level. 0 Reset Button Press this button to “reset” the internal microcomputer which controls remote control operations. Microcomputer “reset” is necessary when the remote control freezes.
1-4. ADJUSTMENT MAIN/CENTER/EFFECT SPEAKER LEVEL BALANCE ADJUSTMENT This operation uses an internal test-tone generator for balancing the levels of the main, center and effect speakers. 1. Depress the TEST switch on the remote control so that “TEST DOLBY SUR.” appears in the display panel to enter test mode. A hiss-like calibration signal should be heard from the left main speaker, center speaker(s), right main speaker and rear effect speakers in turn (see diagram).
This adjustment is important for obtaining the best performance from the internal circuits of this unit. The optimum input level of this unit is pre-adjusted on the basis of the CD source level. This adjustment should be performed on all input sources in your system respectively, so that their levels match the CD source level as closely as possible. Front panel Remote control English 4. Select any other source in your system (VCR, turntable, etc.) and play that source. INPUT LEVEL ADJUSTMENT or 1.
OTHER IMPORTANT SETTINGS AND ADJUSTMENTS IN THE “SET/MENU” MODE 2. Select an item (title) of setting/adjustment. The following five types of settings and adjustments should be done before enjoying audio and video sources. Note that these settings and adjustments cannot be done without monitoring the display information (or the information displayed on the monitor screen). 1. 2. 3. 4. 5. 3. Select any desired mode or edit parameters on the item.
1. Selecting Center Mode (CENTER MODE NRML/WD/ PHNTM) In Normal (NRML) position, any frequency below 100 Hz will be divided between the main left and main right speakers. For this reason even a speaker smaller than the main left and right speakers can obtain a sufficient effect. In Wide (WD) position, all range of frequencies for the centerchannel are output to the center speaker. Select this position if a good quality center speaker is being used.
3. Initializing parameters on a DSP program (PARAMETER INIT) You can initialize all edited parameters on a DSP program. Note that a DSP program (except CHURCH) has two sub-programs; all parameters on both sub-programs are initialized by this operation. Operating procedure After selecting this item (title) in step 2 on page 24, press the Parameter + or – key to display the DSP program numbers (1 – 12). A program number whose parameters has been changed is marked with “*”.
GENERAL OPERATION On the front panel, VCR 1, CD or LD can be selected directly by pressing the corresponding switch. 1. Set the MASTER VOLUME control to minimum. English * 2-1. PLAYING A SOURCE Front panel Front panel 4. Play the source. 2. Turn the power on. Front panel Remote control 5. Increase the setting of the MASTER VOLUME control to your listening level. Front panel Remote control or or 3. Select an input source.
2-2. RECORDING A SOURCE TO AUDIO/VIDEO TAPE (OR DUBBING FROM A TAPE TO ANOTHER) To record an input source to be played 1. Press the REC OUT switch (so that “REC OUT...” appears on the display and the monitor screen). 3. Press the REC OUT switch (so that the indicator corresponding to the selected source to be recorded stops flashing). * The same result will be gained after 5 seconds automatically without any operation. Front panel 4. Select an input source to be played (and to be recorded).
This unit has a function of selecting a source to be recorded to tape deck or VCRs independent of the selection of input source. 1. Press the REC OUT switch ( so that “REC OUT...” appears on the display and the monitor screen). 3. Press the REC OUT switch (so that the indicator corresponding to the selected source to be recorded stops flashing). * The same result will be gained after 5 seconds automatically without any operation. English To record a source other than the input source to be played 4.
NOTE: Adjusting the MASTER VOLUME, BASS, TREBLE controls, etc., or selecting a sound field program has no effect on the material being recorded. NOTE: Composite video and S video signals pass independently through this unit’s video circuits. Therefore, when recording or dubbing video signals between two video cassette recorders, if your source VCR is connected to provide only S video (or only composite video) signals, you can record only a S video (or only a composite video) signal on your second VCR.
2-5. MUTING THE EFFECT SOUND The EFFECT switch on the front panel and the EFFECT ON/OFF key on the remote control unit make it simple to compare the normal stereo sound with the fully processed effect sound. English 3. All sound field programs except CHURCH have two “subprograms” (see “2-7. DESCRIPTIONS OF THE SOUND FIELD PROGRAMS”). The sub-programs are selected using the Parameter +/– keys on the remote control unit.
2-7. DESCRIPTIONS OF THE SOUND FIELD PROGRAMS The following list gives brief descriptions of the sound fields produced by each of the DSP programs. Keep in mind that most of these are precise digital recreations of actual acoustic environments. The data for them was recorded at the locations described using sophisticated sound field measurement equipment.
5. ROCK CONCERT Hall E in Europe: A classic large shoe-box type concert hall with approximately 2200 seats. It has a circular stage and seats located behind the stage. Live Concert: A large round concert hall with a rich surround effect. Pronounced reflections from all directions emphasize the extension of sounds.You will experience the sound field with a great deal of presence sitting at about the center position near the stage. This sound field is also effective for karaoke.
7. TV THEATER 1 34 8. TV THEATER 2 Game/Amusement: The sound field of a disco is used for the front presence side, and the sound field of a concert hall in Vienna is used for the rear surround side. This program reproduces video game music etc. more vividly emphasizing the fast tempo and lightness of the music. If the music is in stereo, more effective sound field will be gained by this program. This program is also suitable for karaoke popular music.
10. VIDEO THEATER Classical/Opera: This program provides excellent depth of vocals and overall clarity, restraining excessive reverberation. For opera, the orchestra pit and the stage are ideally combined, letting you feel a full presence sound. The rear surround side of the sound field is relatively moderated, however, it reproduces beautiful sound by the use of the data of a concert hall.You will not be tired from long watching of an opera.
11. MOVIE THEATER 12. DOLBY PRO LOGIC SURROUND Ideal for reproducing video discs, video tapes and similar sources which are Dolby Surround encoded and bear the “DOLBY SURROUND” logo. Reproduces video discs, video tapes and similar sources which are Dolby Surround encoded and bear the “DOLBY SURROUND” logo. 70 mm Adventure: This program is ideal for precisely reproducing the sound design of the newest movies.
The remote control unit, in addition to controlling the most commonly used functions of the main unit and other connected Yamaha audio and video equipment, has a sophisticated “learning” function that allows it to control other equipment in your system equipped with infrared remote control receivers. By setting the YPC/USER/LEARN switch on the remote control unit to “LEARN”, all keys will turn into “learnable function keys”, each capable of “learning” a different remote control function.
NOTE: The originally preset function of a key is still available in the USER position if the key does not learn a new function. Erasing All Learned Functions 1. Set the YPC/USER/LEARN switch to “LEARN”. NOTE: If all signals learned are long signals, it is possible that the capacity of the memory could be completely filled before all of the keys learn new functions, and so no further learning is possible.
CREATING YOUR OWN SOUND FIELDS WHAT IS A SOUND FIELD? In order to explain the impressive functions of the DSP system, we need to first understand what a sound field really is. What really creates the rich, full tones of a live instrument are the multiple reflections from the walls of the room. In addition to making the sound “live”, these reflections enable us to tell where the player is situated, and the size and shape of the room in which we are sitting.
In addition to the “TYPE” parameter which selects the subprograms within each sound field program (e.g. “Hall A in Europe” and “Hall B in Europe” for program 1, “CONCERT HALL 1”), each program also has a set of parameters that allow you to change the characteristics of the acoustic environment to create precisely the effect you want. These parameters correspond to the many natural acoustic factors that create the sound field you experience in an actual concert hall or other listening environment.
● Not all of the following parameters are found in every program. ● ROOM SIZE How it Affects the Sound: English 3-2. DESCRIPTIONS OF THE DIGITAL SOUND FIELD PARAMETERS INIT DLY (Initial Delay) Changes the apparent distance from the source sound. How it Affects the Sound: Changes the apparent size of the music venue. The larger the value, the larger the simulated room will sound. What it Does: Adjusts the timing between the early reflections.
● LIVENESS ● REV. TIME (Reverberation Time) How it Affects the Sound: How it Affects the Sound: This parameter changes the apparent reflectivity of the walls in the hall. The natural reverberation time of a room depends primarily on its size and the characteristics of its inner surfaces. This parameter, therefore, changes the apparent size of the acoustic environment over an extremely wide range.
DIR. ENHANCEMENT (Directional Enhancement) This circuit emphasizes the position of sound. If this circuit is activated, the unity constituent of the input left and right channels (those signals which are common to the left and right channels) will be output from the center speaker, and the disparity constituent of the left and right signals (the difference between the left and right channels) will be output from the surround speakers.
TROUBLESHOOTING PROBLEM Power does not come on. Hum. No sound. No sound from the effect speakers. No sound from the front effect speakers. No sound from the center speaker. The sound suddenly goes off. DSP parameters or other settings on this unit cannot be changed. The sound field cannot be recorded. The remote control unit does not function properly. Noise from nearby TV or tuner. The TRANSMIT/LEARN indicator blinks twice when learning a function.
SPECIFICATIONS Output Level/Impedance REC OUT (PHONO MM) .................................................................. 150 mV/1 kΩ PRE OUT (FRONT L, R, REAR L, R) ................................................... 1V/1.2 kΩ LOW PASS (fc=200 Hz) (EFFECT OFF) .......................................... 4.0V/3.3 kΩ Dynamic Power Per Channel (by IHF Dynamic Headroom Measuring Method) [U.S.A. and Canada models] (8Ω/6Ω/4Ω) .............................................................................
Tone Control Characteristics Bass Boost/Cut .................................................................................... ±10 dB (50 Hz) Turnover frequency .................................................................................. 350 Hz Treble Boost/Cut ................................................................................... ±10 dB (20 kHz) Turnover frequency ................................................................................. 3.