JBL EON15 User Manual
Page 15
The speaker connected to the
MIXED/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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