21
Symptom
Likely Cause
What to do
Noise or hiss heard at outputs
Noisy source device
Disconnect the devices that are connected to your mixer one at a
time. If the noise goes away, the problem is with
the source or the connecting cable.
Unused channel volumes
are up too high
Lower the channel volume on unused channels to “0”
Feedback
Microphones are too close
to the speakers
Speakers should be between the audience and the microphones in
order to avoid feedback.
Headphone signal is weak
MONITOR OUTPUT
is turned down
Turn up the "monitor output volume" on the mixer
Channel Input is too low
Make sure that the channel input volume is turned up
Impedance mismatch
Your headphones have too high of an impedance.
Try a different set of headphones.