Audison bit Ten D Installation Guide download pdf (Page 14)

ADVANCED MANUAL / bit Ten D /

3. Turn on the device and play track 1 of the CD supplied with the bit Ten D.

 •Setalltonecontrolstozero(flat).

 •Setbalanceandfadertocenter.

 •Adjusttheheadunitvolumetothemaximumundistortedoutputlevel.

 •Iftheheadunitprovidesanadjustableequalizer,makesurethatthecontrolsaresettozero(flat).

WARNING: the head unit level must be elevated to the maximum undistorted level. If the head unit distortion

level can not be tested in advance, bring the volume to approximately 80% of its maximum. If the head unit

output level is set too low, the device will produce ground noise (hissing sound) when playing music

tracks. This is due to the low signal / noise ratio provided by the bit Ten D input head unit. If you have this

problem after you calibrated the amplifiers sensitivity (see 7.3), increase the head unit volume and

repeat the bit Ten D calibration procedure as detailed in the following chapter 6.4.

Head unit input-level instrument check.

You will need an oscilloscope for this instrument check.

 •Connecttheheadunitoutputtotheoscilloscope.

 •Playtrack1ofthebit Ten DCD.

 •Settone,faderandbalancecontrolsandtheequalizer(ifany)tozero(flat).

 •Turnonthecar.

 •Adjustthevolumecontrolsothattheoscilloscopeshows

a sine wave with slightly cut peaks, as shown in the figure.

 •Notethevolumeusedbytheheadunit.Itmustbeleftinthispositionforthefollowingoperations.

6. HOW TO SETUP THE bit Ten D WITHOUT A PC

The bit Ten D can be used without a PC and in this case it will not be possible to use the AD Link digital outputs.

In this case, you can mainly use only the DE-EQ (de-equalization) function to eliminate any pre-existing equalization in

the audio system, usually installed as standard by the car manufacturer.

The device will store the following default settings:

Front and Rear stereo broadband inputs;

Phone input with automatic switching when a call is received;

AUX input that can be selected if the DRC is available;

Front and Rear stereo broadband outputs;

Mono Lo-pass filtered SUB output at 150Hz / 12dB Oct.

6.1 HOW TO CALIBRATE THE MASTER FRONT-REAR INPUT SENSITIVITY

Connect the head unit speaker outputs to the bit Ten D high-level input

(see 4.2)

Before turning on the system, make sure the amplifiers RCA plugs are disconnected from the bit Ten D

to avoid speaker damage during the calibration procedure.

The input calibration procedure must be performed with the ignition turned on. In this case, the car voltage is about

14.0 Volts. The head unit will provide an undistorted output signal at higher volume.

Make sure that the IN Level knobs for the inputs used (L / R Front, L / R Rear, Phone, Aux IN L-R) are set to

minimum sensitivity as in the figure (position -).

WARNING: All outputs have no equalization or time delays. If you wish to use the Rear output,

you will have to connect the head unit Rear outputs to the bit Ten D input.

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Audison bit Ten D Installation Guide Page 14