Speaker Output
Low or Distorted
Readjust input gains of
amplifier.
Check system with known
working source and repair
or replace orignal source as
needed.
Check speaker polarity and
correct as needed.
Check signal input switch
and XCard positons and
repair or replace as neces-
sary.
Check the alternator, bat-
tery, fuse and wiring and
repair as necessary.
Symptom
Diagnosis
Remedy
Input gain signal for
amplifier set too low.
Source unit output too
low.
Speakers wired out of
polarity from the left to
right channel.
XCards are missing or
not placed properly in
crossover slots and/or
switch not properly se-
lected.
Low battery voltage or
large voltage drops to
the amplifier under load.
Amplifier Noise
(Turn-on Pop)
Voltage spike from out-
put of preceding com-
ponent is entering am-
plifier through input sig-
nal.
Voltage spike from re-
mote turn-on lead is
entering through REM
input terminal.
Disconnect input signal to
amplifier and turn ampli-
fier on and off. If noise is
eliminated, connect REM
lead of amplifier to source
unit with a delay turn-on
module.
Use different 12 volt
source for REM lead of
amplifier. (i.e., battery di-
rect) If noise is eliminated,
use relay to isolate ampli-
fier from noisy turn-on
output.
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