Troubleshooting
Before removing your amplifier, refer to the list below and follow the suggested procedures, Always test the speakers and their wires first.
No Output
Only one channel works
Weak output
Noise in the Audio
Confirm that all terminal strip connections are secure and tonight.
Check both
Confirm that the audio signal source (car audio, equalizer, etc.) is connected and is supplying output signal. To check if the amplifier is supplying signal, unplug the RCA cables from the signal source (but leave them plugged into the amp). Briefly tap the center pin of each of the disconnected RCA plugs with your finger. this should produce a noise (feedback) in your speakers.
Confirm that all speaker strip connections are secure and tonight.
Check the "BALANCE" control on the head unit (or other source) to verify that it is set to its midpoint.
If you are using the Low Level RCA input, reverse the input plugs at the amplifier (switch the R with the L). If the channel which is silent switches to the other side, the problem is either in the head unit/other source or the connecting cables.
Readjust the input Sensitivity control to better suit the input signal.
If the noise is a "whine" whose pitch follows the engine speed, confirm that the amplifier
and any other signal sources (head unit ,etc.) are properly grounded.
If the noise is a "clicking"or "popping" noise whose rate follows the engine speed, this usually means that the vehicle is equipped with resistor spark plugs and wires, or that the ignitions is in need of service.
Check the routing of the speakers and input wires to make sure they are not adjacent to wires which interconnect lights and other accessories.
If the above steps fail to improve or clear noise interference, the system should be checked by a professional mobile audio installer.
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