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ADVANCED MANUAL / bit Ten D /

9. How to calibrate the bit Ten D IN Level inputs.

This procedure is delicate and requires particular attention. Improper execution can invalidate the final acoustic

results.

The bit Ten D outputs must be disconnected from the amplifiers.

 •Whileplayingtrack1oftheCD,turnthefirstknobtowardsthehighestsensitivity(position+).

 •WhentheorangeLEDlightsuporflashes,stopturningandgobackslightlyuntiltheLEDturnsoff.

 •ItisnormalfortheLEDtoflashbriefly;thisindicatecorrectsensitivitycalibration.

 •Repeattheprocedurefortheother3Front/Rearknobs.

 •Notethecalibrationlevelusedbytheheadunitvolumecontrol.

Press BACK to go back to the previous step.

Press NEXT to go ahead with the setup procedure.

Press CANCEL to exit the procedure.

WARNING:

Audiosystemsinstalledasstandardbycarmanufacturersoftencomewithequalizedoutputs.

This means that the response curve is not flat and the difference between the highest and the lowest

level can reach 6 dB. By calibrating the device so that the LED never lights up, the bit Ten D sensitivity

   maybesuboptimal(low)andyoumayexperiencenoise(whistle)onthespeakers.AfewquickLED

flashes indicate only a small distortion when handling maximum peaks (very occasional) of music tracks.

   Ifthesourceisnotequalized,responseisflatandtheLEDswillalwaysbeonoralwaysoff.Inthiscase,

   calibratingiseasybecauseyouwillsimplyneedtoadjusttheknobssothattheLEDsturnoffjustbelow

the point they turn on.

10.

How to select the speakers available in the system.

Speakers can be selected just by clicking on them.

If the left tweeter, left midrange or left woofer are selected, the software

provides the ability to automatically also activate the right tweeter, right

midrange or right woofer.

Once started, this choice sets the dedicated crossover type and frequencies

with default settings. If you do not use passive crossover filters, each

speaker corresponds to an output channel. The bit Ten D has 5 output

channels; not using passive crossover filters allows you to pilot 5 amplified

channels. Of course you can select more than 5 speakers, in which case the

system will help implement passive crossovers.

Press BACK to go back to the previous step.

Press NEXT to go ahead with the setup procedure.

Press CANCEL to exit the procedure.

Important: Somefactoryheadunitsrequirealowloadimpedancetoenabletheoutputs(usuallytheRearsection).

   Ifduringthecalibrationprocesstheinputsignallevelcan’tbeadjusted,itcouldbenecessarytoconnectin

parallel a 47Ω - 3W resistor to the input cables of the channels showing the issue.

Audison bit Ten D User Manual

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