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Troubleshooting
Before removing your amplifier, refer to the list below and follow the
suggested procedures.
Always test the speakers and their wires first.
Amplifier
will
not
power
up.
Check for good ground connection.
Check that remote DC terminal has at
least 13.8v DC.
Check that there is battery power
on
the +terminal.
Check all fuses.
Check that Protection LED is not
lit, If it is lit, shut off amplifier briefly
and then repower it.
High
hiss
or
engine
noise
(alternator
whine)in
speakers.
Disconnect all RCA inputs to amplifier(s)-if hiss I noise
disappears, then
plug
in
the component driving the amplifier
and unplug its inputs. If hiss I noise disappears, go on until
the faulty I noisy component is found.
It is best to set the amplifier's input level as insensitive as
possible. The best subjective SIN ratio is obtainable this way.
Try to drive as high a
signal level from the head unit as possible.
Protection
led
comes
on
when
the
AMPLIFIER
is
powered
up.
Check for shorts
on
speaker leads.
Check that the volume control on the head unit is turned down low.
Remove speaker leads, and reset the amplifier. If the Protection
LED
still comes on, then the amplifier is faulty.
Amplifier
(8)
gets
very
hot.
Check that the minimum speaker impedance for that model is correct.
Check for speaker shorts.
Check that there is good
airflow around the amplifier.
In
some
applications, an external cooling fan may be required.
Distorted
sound
Check that the Level control(s) is set to match the signal level
of
the head unit.
Check that
all crossover frequencies have been properly set.
Check for shorts
on
the speaker leads.
High
squeal
noise
from
speakers
This is always caused by a poorly-grounded RCA patch cord.
PYLE"
www.pyleaudio.com