Bedienungsanleitung Axton c 508 (Seite 36 von 52) (Deutsch, Englisch, Französisch)

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Sensitivity Adjustments and System-

Matching GAIN (CH1+CH2, CH3+CH4)

To reach a maximum of dynamic response from your individual head

unit / amplifier / speaker combination, it is important to set the res-

pective input sensitivity controls (GAIN) correctly. Firstly the sensiti-

vity determines the actual signal-to-noise ratio. Secondly hand the sen-

sitivity also controls the maximum distortion-free sound pressure level

(SPL) possible with your specific car audio system.

It is recommended to effect the sensitivity adjustments and system LE-

VEL matching in the same sequence as listed below:

™ Set all tone controls (Bass, Mid, Treble, Sub) on the head-unit as

well as all fader and balance controls to neutral. The "Loudness"

option should be in the "Off" position, too.

™ Turn the GAIN control (s) of the connected amplifier(s) to its/their

lowest positions.

™ Turn-on your head-unit and turn-up the volume control to appro-

ximately 3/4 of full volume and start playing a well recorded, dyna-

mic piece of music.

™ For 2- or 4-channel fullrange operation, only: Slowly turn up the

GAIN control until you can hear distorted sounds. Slowly decrease

the LEVEL control to the point where the distortions will have dis-

appeared. The system adjustment is completed.

™ For 3- or 5-channel operation (2x) stereo + mono sub, only:

Slowly turn up the GAIN control until you can hear distorted bass so-

unds. Slowly decrease the GAIN level control to the point where

the distortions will have disappeared.

™ Now you reduce the main volume level on the head-unit to medi-

um listening level.

™ For 3- or 5-channel operation (2x) stereo + mono sub, only: Start

turning up the

GAIN 1 + 2 control clockwise until you have reached

good tonal balance between the (front) satellites and the subwoofer.

A slight attenuation of the bass range should be preferred, as this will

be compensated later by normal driving noises. For 3-channel ope-

ration the system adjustment is completed.

™ For 5-channel operation 2x stereo + mono sub, only: Start turning

up the

GAIN (REAR) control clockwise until you feel to you have re-

ached an appropriate 'rear fill' in the back of the car, so that the over-

all in-car sound becomes smooth and homogenous.

™ Finally, you may want to do some fine-tuning on the different

highpass and lowpass frequencies selected. It is recommended to

start fine-tuning with the subwoofer

(LOWPASS FREQ.) Then pro-

ceed - if necessary - with the front satellites and finish the adjust-

ments with the rear satellites (both HIGHPASS FREQ.).

IMPORTANT: All advice on controls and adjustments of this ma-

nual section is based on the assumption that you are also thoroug-

hly acquainted with all the requirements and features of the

entire audio equipment – especially the head-unit and the spea-

kers – connected to this amplifier!

C208 408 508 Manual UK-D-F 23.07.2003 19:30 Uhr Seite 36

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Axton c 508 Seite 36

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