Bedienungsanleitung Axton c 109 (Seite 40 von 60) (Deutsch, Englisch, Französisch)

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Sensitivity Adjustments and

Gain Matching

To reach a maximum of dynamic response from your individual head

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

spective input sensitivity controls (GAIN) correctly. Firstly the sensitivity

determines the actual signal-to-noise ratio. Secondly, the sensitivity

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

LEVEL 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 approxi-

mately 3/4 of full volume and start playing a well recorded, dynamic

piece of music.

™ 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 disappeared. The

system adjustment is completed.

Logical sequence to adjust the input gains of installs with 3/4- or

5-channels:

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

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

sounds. 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 medium

listening level.

™ FRONT/ 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 prefer-

red, as this will be compensated later by normal driving noises. For

3-channel operation the system adjustment is completed.

™ REAR/ 5-channel operation 2x stereo + mono sub, only: Start

turning up the GAIN (REAR) control clockwise until you feel to you

have reached an appropriate 'rear fill' in the back of the car, so that

the overall in-car sound becomes smooth and homogenous.

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

pass and lowpass frequencies selected. It is recommended to start

fine-tuning with the subwoofer (LOWPASS FREQ.) Then proceed - if

necessary - with the front satellites and finish the adjustments with

the rear satellites (both HIGHPASS FREQ.).

IMPORTANT: All advice on controls and adjustments of this manual

section is based on the assumption that you are also thoroughly

acquainted with all the requirements and features of the entire

audio equipment – especially the head-unit and the speakers

– connected to this amplifier!

C109-509 Manual DEF.indd 40C109-509 Manual DEF.indd 40 15.02.2005 15:30:34 Uhr15.02.2005 15:30:34 Uhr

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