V i b e r a n t
O w n e r ’ s
M a n u a l
1 4 -
T r o u b l e s h o o t i n g
A m p l i f i e r W i l l N o t P o w e r U p.
• 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.
H i g h H i s s O r E n g i n e N o i s e ( A lt e r n a t o r W h i n e ) I n S p e a k e r s .
• 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.
P r o t e c t i o n L e d C o m e s O n W h e n Th e A m p l i f i e r I s P o w e r e d U p
• 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.
A m p l i f i e r ( S ) G e t s V e r y H o t
• 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.
D i s t o r t e d S o u n d
• 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.
H i g h S q u e a l N o i s e Fr o m S p e a k e r s
• This is almost always caused by a poorly-grounded RCA patch cord.
Summary of Contents for VIBE218
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