JBL EON15 G2 - Manual (Page 16)

The speaker connected to the MIX/LOOP SWITCH set Disengage the MIX OUT switch.
OUT connector goes up in improperly See the CAUTION in thedown in
volume when I adjust the INPUT “Switches” section of this
1 control on the first speaker. manual.
Speakers feed back and howl Microphones are pointed into the Move the speakers so they do
when the microphone volume is speakers not point the microphone’s
turned up pickup pattern.
Equalizer settings are incorrect Locate the feedback frequency
and reduce it using the mixer EQ
or an external equalizer.
Excessive gain Reduce the gain at the mixer and
move the microphone closer to
the sound source.
Noise or hiss heard at output Noisy source device Disconnect the devices that are
connected to your speaker one
at a time. If the noise goes away,
the problem is with the source or
the connecting cable.
Hum or Buzz that increases or Improper A/C ground or faulty Disconnect or mute channels one
decreases when the mixer level equipment connected to mixer at a time to isolate the problem.
controls are moved. input Refer to the owner’s manual of
the faulty equipment for
troubleshooting help.
Faulty cable between source Substitute a known-good cable
equipment and mixer for the suspected faulty cable.
Hum or Buzz Improper A/C grounding, ground • “Telescope” the audio
loops ground by using an XLR/F to
XLR/M adapter on one end.
• Re-route audio cables away
from AC power and lighting
cables.
Excessively long unbalanced • Use the balanced outputs (if
cable run available) of your mixer or
source equipment to drive
your EON speakers.
• Use a “DI” (direct injection)
box to convert your
unbalanced equipment output
to a balanced output.
Improper system gain structure Reduce the INPUT 1, 2 and 3
controls and increase the output
level of your source devices.
The inputs from INPUT 2 and MIX/LOOP SWITCH set Set the MIX/LOOP SWITCH to
INPUT 3 aren’t coming out of improperly the MIX OUT position
the OUT connector (depressed). See the CAUTION
in the “Switches” section of this
manual.
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