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Viberant Owner’s Manual-15
Note
s
Viberant Owner’s Manual14-
Troubleshooting
STOP
YES! NO!
2-channel Amplifier
(Operating in Stereo)
4 ohm
4 ohm
Two 4-ohm speakers, wired in stereo,
will present a 4-ohm load to each
channel of the amplifier. Most two-
channel amplifiers will work well in this
configuration.
Two 4-ohm speakers, wired in parallel
to a bridged two-channel amplifier.
will present a 2-ohm mono load to the
amplifier. MOST TWO-CHANNEL
AMPLIFIERS DO NOT SUPPORT 2-OHM
MONO OPERATION! AMPLIFIER DAMAGE
COULD RESULT!
sound around, Inc.
1600 63rd street. brooklyn. ny 11204
4 ohm
4 ohm
2-channel Amplifier
(Operating in
Bridged Mono)
STOP
YES!
NO!
Four 4-ohm speakers, wired in stereo,
will present a 4-ohm load to each
channel of the amplifier. Most four-
channel amplifiers will work well in this
configuration.
Four 4-ohm speakers, wired in parallel
to a bridged four-channel amplifier,
will present a 4-ohm mono load to the
amplifier. MOST FOUR-CHANNEL
AMPLIFIERS DO NOT SUPPORT 2-OHM
MONO OPERATION! AMPLIFIER DAMAGE
COULD RESULT!
4-channel Amplifier
(Operating in
Bridged Mono)
4 ohm
4 ohm
4 ohm
4 ohm
4-channel Amplifier
(Operating in Stereo)
4 ohm
4 ohm
4 ohm
4 ohm
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.
9


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