14
N o i s e s W h i l e t h e E n g i n e i s O n o r O f f
S y s t e m h i s s :
D i s t o r t i o n :
System hiss is a white noise that occurs even when the engine is off. It is usually
due to excessively high gain settings. If the hiss is still audible when you
disconnect the input cables from the amplifier, check the input level on the
amplifier. If the hiss disappears when you remove the input cable, it may be a
poor quality source unit, components between the amplifier and the source unit,
or poor level settings.
Check each side of the amplifier
independently to see if the
distortion is only on one channel.
Is that the case?
Distortion is garbled sounding music. This can often be caused by a shorted speaker
wire. Symptoms of this include no sound in one channel and severe distortion in the
other. Use the following guide to help you find the source of distortion.
YES
NO
Try reducing the input level
controls.
YES
NO
Check for distortion in
the signal path prior to
the amplifier.
YES
NO
Check and/or replace
the speaker that is
distorting.
Swap the input side
left/right. Did the
distortion switch
sides?
NO
Contact your dealer.
Check the source unit and
components between the source
unit and amplifier
YES
Is there audible distortion at all of
the amplifier outputs?
Swap the output connection left to
right. Check for shorted speaker wire.
Did the problem switch sides?
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