12
Troubleshooting, cont.
High squeal noise
from speakers
Check that crossover frequencies have been properly set.
Check for short circuits on the speaker leads.
Distorted sound
Amplifier gets
very hot
Check all RCA interconnects. High squealing noises are almost always caused
by RCA cables with poor grounding. Always use high-quality RCA interconnects
in your audio system.
Check that the Level control(s) is set to match the signal level of the head unit. Always
begin at the lowest setting.
Check that the minimum speaker impedance for that model is correct.
Check that there is good airflow around the amplifier. In some applications, an external
cooling fan may be required.
Engine noise
(static type)
Engine noise
(alternator whine)
Check all RCA interconnects. Engine static noises are almost always caused by RCA
cables with poor grounding. Always use high-quality RCAi interconnects in your
audio system.
Check that there are no shorts between speaker leads or RCA grounds and the vehicle
chassis. Check that the head unit is properly grounded.
