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.Bv 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 the amplifierlsJ.jfhiss/noise disappear>. then plug in the component driving the amplifier and unplug its inputs. If hiss / noise disappear>. go on until the faulty/noisy component is found.

It is best to set the amplifier'sinput level as insensitive as possible. The best SUbjective SIN ratio is oblainable this way. Try to drive as high a signal level from the head unit as possible.

PROTECTION LED COMES ON WHENtTHE AMPLIFIER IS POWERED UP.

Check for shorts on speaker leads.

Check that the volume control on the heiJd unit is turned down low.

Remove speaker leads. and reset the am/Jlifier. If the P otection LED still comes on. then the amplifier is faulty.

Check that the minimum speaker imped<lnce 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 contrails) is set to match the signal Ie

Check that all crossover frequencies have been properly set.