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Speaker Output
Low or Distorted
Readjust input gains of amplifier.
Check system with known work-
ing source and repair or replace
original source as needed.
Check XCard position and repair
or replace as necessary.
Check the alternator, battery,
fuse, and power and ground
wiring. Repair as necessary.
Symptom Diagnosis Remedy
Input gain signal for amplifier
is incorrectly set.
Source unit output too low or
source unit has no output.
XCard is missing or not placed
properly in crossover slots.
Low battery voltage or large
voltage drops to the amplifier
under load.
Amplifier Noise
(Turn-on Pop)
Voltage spike from output of
preceding component is en-
tering amplifier through in-
put signal.
Voltage spike from remote
turn-on lead is entering
through REM input terminal.
Disconnect input signal to
amplifier and turn amplifier
on and off. If noise is elimi-
nated, connect REM lead of
amplifier to source unit with
a delay turn-on module.
Use a different 12 volt source
for REM lead of amplifier.
(i.e., battery direct) If noise
is eliminated, use a relay to
isolate amplifier from noisy
turn-on output.
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