Precision Power PC6800 - Manual (Page 20)

18
TROUBLE SHOOTING
AMPLIFIER TURNS DOWN
Both excessive temperature and low impedance (or short circuit)
conditions will activate the amplifier's AM IV protection circuitry, which
turns down the amplifier's output. When the amplifier cools down, or
the impedance is corrected, the AM IV will restore full power.
If your amp is turning down check your speakers and wiring for low
impedance and short circuits.Also,ensure that there is nothing blocking
the normal convective airflow of the amplifier. No obstruction should
be within 2" of the amplifier on all sides.
NOTE: Low battery voltage will cause the amplifier to run warmer.
NO SOUND ON BANDPASS CHANNELS
Be sure that crossover points are
set properly. Is the highpass set
at a higher frequency than the
lowpass or the lowpass set lower
than the highpass, creating a no
pass?
YES
Readjust crossovers and then
test system again.
STILL NO SOUND - See your Authorized PrecisionPower
Dealer or Call 1-800-62POWER .
NO
Check speaker wiring for short
circuits or loose connections. Be
sure that powerlock plugs are in
place properly (screws facing up)
and observe correct wiring
diagram.
NO SOUND IN BRIDGED MODE
Check speaker wiring for short circuits or loose connections. Be
sure that powerlock plugs are in place properly (screws facing up)
and observe correct wiring diagram.
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