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EVID High Performance Ceiling Speakers
5
Troubleshooting
Problem
Possible Causes
No output
Amplifier
Loudspeaker
cables(s)
Questionable or
Faulty connection
intermittent output,
such as crackling
Improper power
tap setting
Constant noise
A faulty electronic
such as buzzing,
device in the signal
hissing, or
chain
humming
Poor system
grounding
Poor low-frequency
Out-of-polarity
output
hookup between
multiple
loudspeakers
If these suggestions do not solve your problem, contact your nearest Electro-Voice dealer or
Electro-Voice distributor.
2017.01 | 02 | F.01U.321.491
Action
Ensure the amplifier channel is being fed an input signal (preferably
via a signal input indicator on the amplifier).
Verify the amplifier channel's volume is turned up.
Connect the loudspeaker and cable, which had no output to another
amplifier channel, ensuring an input signal is fed to the new amplifier
channel. If you then get output, the problem was the amplifier
channel. If not, then the problem is either the cable or the
loudspeaker.
Replace the cable(s) connecting the loudspeaker system and
amplifier.
Ensure all cabling for proper connector contact. A bad connection can
result in intermittent contact or dramatically increased resistance,
which in turn can cause reduces output or noises unrelated to the
signal.
Verify the power tap setting under the loudspeaker grille is
appropriate for the installation and amplifier chosen.
Loudspeakers cannot generate these sounds by themselves; you may
have a faulty electronic device in the signal chain.
Check and correct the system grounding, as required.
When two loudspeakers are hooked up out of polarity (out of phase),
the low frequencies cancel each other out. Try reversing the polarity
of one of the loudspeakers either by turning around a dual-banana
plug at the amplifier or by reversing the tip/sleeve leads on the jack.
Which ever condition results in greater low-frequency output is the in-
polarity condition.
Installation Note
Electro-Voice
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