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  5. Operation Manual

Yamaha DSP-A990 Operation Manual

Manual is about: Digital Sound Field Processing Amplifier

Summary of DSP-A990

  • Page 1

    Front r rear l –200m front l front rear l r –200m 200m rear r 200m natural sound digital sound field processing amplifier dsp-a990 input selector vcr i cd ld phono tv/dbs pro logic decoder sound field processor cinema dsp 7ch digital sound field processing amplifier / operation manual amplificateur ...

  • Page 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 expe...

  • Page 3

    1 english safety instructions 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 humidity—such as near radiators, stoves, etc. Also avoid locations which are subject to excessive dust accumulation or vibrat...

  • Page 4: Contents

    Precautions & safety instructions ..................................1 setup & adjustment ...................................................................3 1-1. Getting started....................................................................3 1-2. Setup.............................................

  • 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

    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 9

    7 english 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. ...

  • Page 10

    8 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 13.) center mode—set to phntm. (see page 26.) 5 speaker system good for audio/video sources and dolby pro logic surround. With sound ...

  • Page 11

    9 english 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 pre...

  • Page 12

    10 1-2. Setup before you start making connections make sure all related electronic components are turned off. Rear panel 5ch 7ch on off tv/dbs gnd front mix low pass pre out main in main ch rear —i0db main 0db level front center coupler front 6 Ω min./speaker 6 Ω min./haut– parleur main 6 Ω min./spe...

  • Page 13

    11 english 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...

  • Page 14

    12 f low pass jack when using a subwoofer, connect its amplifier input to this jack. Frequencies below 200 hz from the left main, right main and center channels are output to this jack. G center out jack center-channel line output. Not connected when the built-in amplifier is used. Can be connected ...

  • Page 15

    13 english rear panel switch and control settings there are several switches and controls on the rear panel that you’ll have to check before operating your system, and it’s a good idea to do it before you connect cables. Locate the main level slide switch ( 3 ) and front mix slide switch ( d ). Make...

  • Page 16

    14 tv/dbs gnd aux 1 phono 1 2 3 4 audio out line out line in output gnd line out video out audio in video in audio out video out output output audio out video out audio in video in audio out video out video in connecting audio/video source equipment to this unit * if you have yamaha components numbe...

  • Page 17

    15 english 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...

  • Page 18

    16 for connecting with a monitor tv that uses a 21 pin connector for input (for europe and u.K. Models) make a connection as figured below with a commercially available scart-plug connector cable. Connecting speaker systems connect the speakers terminals to your speakers with wire of the proper gaug...

  • Page 19

    17 english connecting the main speakers to this unit connect the main speakers to the main speaker output terminals of this unit. Make sure that the jumper bars between the pre out and main in jacks on the rear panel are in place. It is also possible to use an external power amplifier if more power ...

  • Page 20

    18 connecting the effect speakers and the center speaker(s) 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 ef...

  • Page 21

    19 english 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 amplifie...

  • Page 22

    20 1-3. Controls & adjustments front panel 1 power switch * standby mode 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 power indicator is half illuminated.) 2 power indicator lights up while the power is on. 3 displ...

  • Page 23

    21 english 6 remote control sensor signals from the remote control unit are received here. 7 input source indicators shows the currently selected input source by lights up the corresponding indicator. 8 input selector switch sequentially selects the input source that you want to listen to and/or wat...

  • Page 24

    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 operatin...

  • Page 25

    23 english 8 front level +/– keys increase (+) or decrease (–) the volume level of the front effect speakers. 9 center level +/– keys increase (+) or decrease (–) the volume level of the center speaker(s). 0 rear level +/– keys increase (+) or decrease (–) the volume level of the rear effect speaker...

  • Page 26

    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 on the display panel to ente...

  • Page 27

    25 english 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...

  • Page 28

    26 other important settings and adjustments in the “set menu” mode make the following five types of settings and adjustments 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 th...

  • Page 29

    27 english 2. Adjusting center channel graphic equalizer (center geq) the built-in five band graphic equalizer is used to tailor, over a ±6 db range, the overall output frequency response of the center channel. The five bands cover the complete audible sound spectrum and are centered on 100 hz, 300 ...

  • Page 30: General Operation

    28 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 input source indicator on the front panel.) * on the front panel, vcr 1,...

  • Page 31

    29 english to record the input source 1. Press the rec out switch (so that “rec out...” appears on the display and the monitor screen). Front panel 2. Within 5 seconds, select the “source” position with the input selector switch (so that “rec out source” appears on the display panel and the monitor ...

  • Page 32

    30 to record a source other than the input source 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 2. Within 5...

  • Page 33

    31 english 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 sign...

  • Page 34

    32 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” an...

  • Page 35

    33 english 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 locati...

  • Page 36

    34 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 ...

  • Page 37

    35 english 7. Entertainment stadium: this program gives you long delays between direct sounds and effect sounds, and extraordinarily spacious feel of a large stadium. Disco: this program recreates the acoustic environment of a lively disco in the heart of a very lively city. The sound is dense and h...

  • Page 38

    36 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 relativ...

  • Page 39

    37 english 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 accordi...

  • Page 40

    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 or other household appliances equipped with inf...

  • Page 41

    39 english 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 there is no more room in the memory area for a function to be learned, the transmit/learn indicator will flash on and off eight times. In this case, eve...

  • Page 42

    40 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 the walls ...

  • Page 43

    41 english 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 envi...

  • Page 44

    42 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 the tim...

  • Page 45

    43 english ● 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 sur...

  • Page 46

    44 ● 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 disp...

  • Page 47: Troubleshooting

    45 english 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. The volume level cannot be increased, or sound is distorted. Dsp parameters or other settings on this u...

  • Page 48: Specifications

    46 minimum rms output power per channel main (20 hz – 20 khz 0.015% thd 8 Ω /6 Ω ) ................ 60w+60w/75w+75w center (20 hz – 20 khz 0.015% thd 8 Ω /6 Ω ) ................................ 60w/75w front effect (1 khz 0.03% thd 8 Ω /6 Ω ) .........................22w+22w/25w+25w rear effect (1 k...

  • Page 49

    47 english video section video signal type [australia, europe and u.K. Models] ...................................................... Pal [singapore model] .................................................................................Ntsc [general model] .............................................

  • Page 50

    Yamaha electronics corporation, usa 6660 orangethorpe ave., buena park, calif. 90620, u.S.A. Yamaha canada music ltd. 135 milner ave., scarborough, ontario m1s 3r1, canada yamaha electronik europa g.M.B.H. Siemensstr. 22-34, 25462 rellingen bei hamburg, f.R. Of germany yamaha electronique france s.A...