JBL EON PowerSub G2, User Manual

Signal sounds distorted even

Mixer or other source is overdriven

Review the Owner’s Manual 

at moderate volumes, PEAK 

for your mixer and adjust

light is not lit.

controls as needed
• Input sensitivity (gain)
• Channel faders
• Master faders  

Hum or Buzz that increases

Improper A/C ground or faulty

Disconnect or mute 

or decreases when the mixer

equipment connected to mixer

channels one at a time to

level controls are moved.

input

isolate the problem. Refer  
to the owner’s manual of the
faulty equipment for 
troubleshooting help.   

Faulty cable between source

Substitute a known-good

equipment and mixer  

cable for the suspected 
faulty cable.  

Hum or Buzz 

Improper A/C grounding, ground 

• Connect all speakers to a

loops  

common power circuit.

• “Telescope” the audio 

ground by using an XLR/F 
to XLR/M adapter with 
Pin1 disconnected on one 
end.

• Re-route audio cables 

away from AC power and 
lighting cables.    

Excessively long unbalanced cable

• Use the balanced outputs 

run 

(if available) of your mixer 
or source equipment to 
drive your EON speakers.

• Use a “DI” (direct injection)

box to convert your unbal-
anced equipment output 
to a balanced output.   

Improper system gain structure 

Reduce the INPUT 1, LINE 
2, and LINE 3 controls and 
increase the output level of 
your source devices.

Speakers feedback and howl

Microphones are pointed into the

Move the speakers so they 

when the microphone volume

speakers

do not point into the micro-

is turned up 

phone’s pick-up pattern. 

Equalizer settings are incorrect 

Locate the feedback fre
quency and reduce it using 
the mixer EQ or an external 
equalizer.   

Excessive gain 

Reduce the gain at the 
mixer and move the micro-
phone closer to the sound 
source. 

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