Troubleshooting
The M3 Subwoofer System is designed for trouble-free operation when installed properly and operated correctly. Therefore, any
problem that might occur is usually due to operator error. If you have a problem, please check the troubleshooting list first. If the
problem persists, contact Proficient Technical Support at 1-877-888-9004 or e-mail us at [email protected].
The following symptoms should be handled in accordance with the instructions in the event of a system abnormality:
There is an audible hum or buzzing sound.
The sound may be due to a ground loop in the system. Try to eliminate this by reversing the AC plugs of other components in the
system. Try plugging the amplifier into another outlet. Other causes may include faulty cables.
The amplifier will not turn on.
The amplifier must be plugged into a live outlet. The power switch on the rear panel must be on. A signal must be playing into the
input jacks or the speaker inputs.
The protective circuit cuts in momentarily and then turns off.
The circuitry in the amplifier has determined that the amplifier and/or subwoofer is in danger of overheating. Normally, this would
occur infrequently and only briefly. If it persists, the amplifier might not be located in an area that allows sufficient ventilation.
Move the amplifier to a location that is cooler or better ventilated.
NOTE:
The amplifier’s housing may feel cool to the touch but
still be overheating. Do not use the temperature at the top of the cabinet as a means to gauge the unit’s actual temperature.
The protective circuit activates but does not deactivate.
There may be a fault in the wiring, the speaker or the amplifier. Turn the power switch off and then on again. If the amplifier imme-
diately returns to the protective mode, turn it off and check all of the wiring, including the connections at the amplifier, subwoofer
and wall.
No sound is heard.
Audio cable to the amplifier is not connected properly or the cable is bad. Use another cable that you know is good. Check all
speaker wire connections and plugs.
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