Pioneer RS-P90, RS-D7R owner manual Audio Adjustment Network, What is the multi-amp system?

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Audio Adjustment <Network>

What is the multi-amp system?

The multi-speaker system reproduces each frequency band (high, mid, low and ultrabass- ranges) through its own exclusive speaker unit. The multi-amp system provides an exclusive power amplifier for each speaker unit.

There is only limited space in a vehicle for installing speakers, and it is difficult to install large-diameter speakers in a door or on the dashboard and get high sound quality. To over- come this problem, tweeters (high-range) are sometimes installed in the dashboard in order to move the sound image upwards, or the subwoofers are installed in the rear tray in order to improve bass and ultrabass reproduction. Thus, using a multi-speaker system can correct imbalances in the sound image and significantly improve the total sound quality.

The multi-amp system offers the following features, allowing direct operation of the exclu- sive speaker unit for each frequency range by an exclusive power amplifier.

•It is possible to reduce the modulation distortion rate since high-range signals are not effected by strong signals in the low range.

•As it is possible to select amplifiers and speakers to suit the characteristics of each fre- quency range, the load on each unit is reduced, ensuring optimum performance.

Under the multi-amp system, it is necessary to divide the audio signals into each frequency range (band) and strictly control the set up conditions, using the network.

Under this system, the audio unit incorporates a network. The following adjustments can be conducted within the vehicle.

•	Time alignment adjustment function	: adjusts for the difference in the distance
		between the listener and each speaker unit.
•	Filter function	: sets up a low pass filter and high pass filter to
		decide the reproduced frequency band, the
		level and the phase of each speaker unit.

As the audio signals are processed in the form of digital signals when the network is work- ing, the sound characteristics that best fit the vehicle interior may be created without any deterioration in sound quality.

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Contents RS-P90 Contents Display for the Person who Set Up Head unit RS-D7R Remote control RS-D7RKey Finder Closed state Open stateOpening and closing the remote control cover Remote control Menu displayKey Finder When the cover is closed in the middle of operation When the cover is closedWhen the cover is open Menu display in closed stateBefore Using This Product Key Finder / Before Using This ProductAbout this unit About this manual Case of troubleProduct registration Before Using This Product About the digital networkResetting the microprocessor Remove the coveringAudio Adjustment Switching to the audio menuAudio menu Switching to the main menu Audio Adjustment MainBalance adjustment FAD/BAL Control Closed state Main menuBass/treble adjustment B/T Open state Using the compression CP Open state Press the Function button To select the settingButton Position Adjusting the listening position PS Open stateUsing the position selector Posi Experimenting with other positionsFine tuning the position Use the position selector function and select the positionPoints concerning fine tuning Relation to time alignment adjustment function Time alignment adjustment function of the network menuSource level adjustment SLA Open state Increase or decrease the level with the 5/∞ buttonsBand graphic equalizer 31B-GEQ Audio Adjustment EqualizerAbout the equalizer menu Band parametric equalizer 3B-PEQSwitching to the equalizer menu Equalizer menuRelation between frequency characteristics and sound quality Points when adjusting the equalizer curve Adjusting the 31 band graphic equalizer Fine Open state Switch between right and left to set up the equalizer curveWhen completing the adjustment Separate 3 band adjustment for left/right Adjusting the 3 band parametric equalizer Fine Open stateAbout the adjustment using the parametric equalizer Select functionSetting the equalizer curve Adjust other bands Switch between left and right to set up the equalizer curveFlat function FLT Open state Common to 31B-GEQ and 3B-PEQClear function CLR Open state Audio Adjustment Network What is the multi-amp system?Audio Adjustment Network Switching to the network menuTo cancel the network menu, press the Band button Network menu N.WTime alignment adjustment T.A. Open state Switching to the time alignment adjustment modeMeasuring the distance to be corrected Delay Time Network Unit of distance must be centimetersInputting the distance to be corrected Delay Time Press Function buttons 1 or 2 and select the band to inputAudio Adjustment Network Filter adjustment FTR Open state Range Cut-off frequency Level adjustment H.P.F L.P.FAbout the H.P.F. and L.P.F Switching to the filter adjustment modeUsing the mute function MUT About the slopeAdjusting the filter Press Function button 4 and adjust the phase of each band Press the 5/∞ buttons Adjust the level of each bandPress Function button 3 and adjust the slope of each filter Switch between left and right channel to adjust the filterAdjusting the subwoofer effectively Important points in adjusting the slopeFor better frequency characteristics Adjusting the low-range effectivelyLinear phase characteristics Linear phase LIN Minimum delay phase characteristics Minimum phase MIPBase memory Audio Adjustment Memory FunctionsMemory functions of adjusted audio menu Memo Custom memoryEqualizer menu Switching to memory modeAudio Adjustment Memory Function Network menuSwitch to the memory mode of each menu refer to Storing the adjustment data in memoryAdjust each audio menu Press the Shift button to cancel memory modeForward/reverse order Functions of equalizer menu Close the cover of the remote controlRecalling data stored in memory Specifying the memory number directlySpecifying the memory number directly Press the Function button to recall the memoryMemory recall operations on the equalizer menu When turning the protect function ON/OFF Memory protect functionRecall the memory refer to Press the Menu button to switch to the audio menu Display for the Person who Set Up the Audio AdjustmentsInputting characters Switching to the edit mode Inputting the nameSwitch the desired character type with Function button When removing the car battery Memory Data Memo EqualizerNetwork Filter characteristics Network Time alignment Memory Data MemoConnecting the Units Connecting the Units Setting exampleUsing the corrugated tube Routing the optical cableConnection diagram RS-D7RConnecting the RCA input amplifier Connecting the power terminal Connecting the leadsSecure the optical cable Attach the cable clampInstall the brackets to the bottom of the unit InstallationInstalling the unit Install the unit to the vehicleInstallation / Troubleshooting TroubleshootingChecklist Symptom Cause RemedySpecifications GeneralSpecifications Pioneer Corporation