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Viberant Owner’s Manual14-
Troubleshooting
Amplifier Will Not Power Up.
• Check for good ground connection.
• Check that remote DC terminal has at least 12V 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 amplifier(s)-if hiss/noise disappears, then plug in the component driving the amplifier and unplug its
inputs. If hiss/noise disappears, go on until the faulty/noisy component is found.
• It is best to set the amplifier's input level as low as possible. The best subjective S/N 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(S) 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 appliciations, 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 almost always caused by a poorly-grounded RCA patch cord.