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  5. Operation Manual

Yamaha DSP-A970 Operation Manual

Manual is about: Digital Sound Field Processing Amplifier

Summary of DSP-A970

  • Page 1

    Dsp-a970 dsp-a970 contents safety instructions ............................. Inside front cover setup & adjustment .......................................................... 3 1-1.Getting started ........................................................... 3 1-2.Setup ...................................

  • Page 2: Safety Instructions

    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. 3 heed warnings – all warnings on the unit and in the operating instructions should be ad...

  • Page 3: 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 prev...

  • Page 4

    2 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 ex...

  • Page 5: Setup & Adjustment

    1-1. Getting started unpacking 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. Installing the remote control unit batteries since the remote control unit will be used for...

  • Page 6

    ● 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 s...

  • Page 7

    Dolby pro logic surround 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 chann...

  • Page 8

    Setting up your speaker system 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 therefo...

  • Page 9

    Four possible types of speaker system configurations recommended 7 english 4 speaker system simplest system. You can enjoy widely diffused sound by only adding two additional speaker units at the rear. Front mix switch—set to on. (see page 12.) center mode—set to phntm. (see page 25.) 5 speaker syst...

  • Page 10

    Speakers and speaker placement 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 ster...

  • Page 11

    Video superimpose 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. ...

  • Page 12

    1-2. Setup before you start making connections make sure all related electronic components are turned off. Rear panel 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 expos...

  • Page 13

    1 audio signal connection jacks (for audio source equipment) connect the inputs and/or outputs of your audio equipment. 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 vid...

  • Page 14

    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 excee...

  • Page 15

    13 english connecting audio/video source equipments to this unit cd player video disc player tv/satellite tuner video cassette recorder 1 video cassette recorder 2 tuner tape deck 1 tape deck 2 turntable monitor tv.

  • Page 16

    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...

  • Page 17

    Connecting the main speakers and center speaker(s) to this unit 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 t...

  • Page 18

    Connecting the effect speakers to this unit connect the front effect speakers to the front effect speaker output terminals of this unit. 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...

  • Page 19

    Adding a subwoofer you may wish to add a subwoofer to reinforce the bass frequencies. This unit provides a line-level subwoofer output, which contains only the frequencies under 200 hz from the main and center channels. Connect the low pass jack to the input jack of the subwoofer amplifier, and conn...

  • Page 20

    18 1-3. Controls & adjustments front panel 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 rem...

  • Page 21

    5 input trim control adjusts the input level of each source respectively. 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 effec...

  • Page 22

    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 t...

  • Page 23

    8 center level +/– keys increase (+) or decrease (–) the volume level of the center speaker(s). 9 rear level +/– keys increase (+) or decrease (–) the volume level of the rear effect speakers. 0 reset button press this button to “reset” the internal microcomputer which controls remote control operat...

  • Page 24

    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 t...

  • Page 25

    Input level adjustment 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 respective...

  • Page 26

    Other important settings and adjustments in the “set/menu” mode 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 displaye...

  • Page 27

    Descriptions of the items 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 ef...

  • Page 28

    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 (...

  • Page 29: General Operation

    2-1. Playing a source 1. Set the master volume control to minimum. 2. Turn the power on. 3. Select an input source. (the selected source is shown by the display panel, the monitor screen and illumination of the corresponding indicator over the input selector switches.) * on the front panel, vcr 1, c...

  • Page 30

    28 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). Front panel 2. Within 5 seconds after the rec out switch is pressed, select the ...

  • Page 31

    To record a source other than the input source to be played 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). Front panel ...

  • Page 32

    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...

  • Page 33

    3. All sound field programs except church have two “sub- programs” (see “2-7. Descriptions of the sound field programs”). The sub-programs are selected using the parameter +/– keys on the remote control unit. The concert hall 1 program, for example, contains the sub-programs “hall a in europe” and “...

  • Page 34

    32 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 desc...

  • Page 35

    3. Concert hall 3 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 ext...

  • Page 36

    7. Tv theater 1 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...

  • Page 37

    9. Concert video 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...

  • Page 38

    11. Movie theater ideal for reproducing 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 sound field is made according to the d...

  • Page 39

    37 english 2-8. Remote control “learning” function 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 sys...

  • Page 40

    Note: the originally preset function of a key is still available in the user position if the key does not learn a new function. 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 ...

  • Page 41

    39 english 3-1. Selecting and editing program parameters 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 th...

  • Page 42

    In addition to the “type” parameter which selects the sub- programs 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 ...

  • Page 43

    41 english 3-2. Descriptions of the digital sound field parameters not all of the following parameters are found in every program. ● room size 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...

  • Page 44

    ● liveness how it affects the sound: this parameter changes the apparent reflectivity of the walls in the hall. The early reflections from a sound source will lose intensity (decay) much faster in a room with acoustically absorbent wall surfaces than in one which has mostly reflective surfaces. A ro...

  • Page 45

    43 english ● 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 ...

  • Page 46: Troubleshooting

    44 problem possible cause what to do power does not come on. Ac cord not properly plugged in. Carefully plug ac plug into outlet. Hum. Bad cable connection. Firmly plug in all connection cables. No sound. Bad or incorrect input connection. Check connections. Incorrect input source selection. Select ...

  • Page 47: Specifications

    Minimum rms output power per channel main (20 hz – 20 khz 0.015% thd 8 Ω /6 Ω ) [u.S.A. And canada models] .............................................................. 65w/80w [australia, europe, u.K. And general models] ................................... 60w/75w center (20 hz – 20 khz 0.015% thd...

  • Page 48

    Tone control characteristics bass boost/cut .................................................................................... ±10 db (50 hz) turnover frequency .................................................................................. 350 hz treble boost/cut .................................