TROUBLESHOOTING
One certain method of determining if a speaker is faulty is to substitute a speaker that is known to work correctly for
the suspected problem speaker. If the “normally correct speaker” is experiencing the same difficulties or problems
as the suspected problem speaker, use the information below to isolate the problem.
No output
Possible cause Action
Speaker cables Reseat all connectors
Substitute known good speaker cables
Check solder joins
Tighten set-screws on the banana connectors or 4-p connectors
Inspect cable for damage
Inspect wire or connector for stray strand that may short
Amplifier Make sure the amplifier channel is being fed a signal. Most amps have a “signal input” LED
to indicate the presence of a signal. Re-patch the speaker to an amplifier channel that is
known to work.
Intermittent
Possible cause Action
Poor connections While it is possible for a faulty speaker to exhibit intermittent output, it’s more likely that an
output cable/connector is the problem. Check the soldering on your connectors. Tighten
the set-screws on the banana connectors or 4-p connectors.
Constant noise, buzzing and/or humming
Possible cause Action
Faulty electronic Any constant noise originates in the amplifier, mixer, signal processing, source device in
the signal devices, or line-level wiring. Check and correct system grounding as required. chain
check for noisy sources or electronic components. Check wiring for shielding.
Poor low-frequency output
Possible cause Action
Improper polarity When two speakers in close proximity to each other are connected out-of-polarity, they can
partially cancel each other out, especially at low frequencies. Check your speaker cables to
be sure they are all identically wired and connected. Check the balanced line signal cables
to be sure they are all correctly wired.
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