AXTON AXB20P Einbauanleitung Seite 5

INterfereNCe
all advice on controls and adjustments is based on the assumption that you are
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also thouroughly acquainted with all the requirements and features of the entire
audio equipment – especially the head-unit – connected to this amplifier!
All cables are sources of interference. The power cable and RCA audio cable are very
prone to interference; the remote cables far less. There is often interference caused by
the generator (buzzing or whining), ignition (cracking) or other car electronic parts. Most
of these problems can be eliminated by correct and careful cabling. In doing so, read the
following guidelines first:
Use only a screened audio cable for the wiring between RCA input of the amplifier and
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RCA or DIN output of the head unit.
Lay the signal and power cables separately with enough distance from one another
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and also from each other car cable. The REM cable to the automatic amp remote
output of the radio can be laid together with the signal cables. Avoid ground loops by
laying the ground wiring of all components to a center point in a star-like way.
You can find the best central point in measuring the voltage directly at the battery.
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Now compare this voltage value with the chosen ground point and the (+) terminal of
the amplifier. lf the measured voltage offers less than 0.1 V difference you've found the
correct central, which should be clean and uncorroded. Otherwise you have to look for
another point. You should measure with the ignition being switched on and additionally
switched on other electronics (rear window heating and lights). If there are noise
pickups from external electrical sources into the speaker cables, divide the core leads
and twist them together.
If there are humming noises, use thicker ground cables or add further ground cables to
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the chassis.
To reduce contact resistance and loose contacts, use core cable ends.
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