Troubleshooting - Pyle PLXR2B User Manual

TROUBLESHOOTING

SYMPTOM
No power
Motorboating:
The crossover power indicator
going o repeatedly when
the audio system is on
The crossover heats up quickly
even when the audio system
is at moderate volume.
When the engine is running, the
audio system has a whining
noise that remains unchanged or
disappears with the increase of
audio volume.
When the engine is running, the
audio system has a whining noise
that increases or decreases with
the volume of all program sources
(wheather radio, tape or CD).
When the engine is running, the
audio system has a Whining noise
that increases or decreases with
the tape mode volume ONLY.
Obvious distortion at low volume.
Overall sound e ect good, but bass
abnormal (more bass at the two
extreme settings of the balance
control than at the center setting).
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PROBABLE CAUSE
Check all the ground, B+ and remote cables for tight connection.
●
Check all fuses.
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Use a Volt/Ohm meter to check all power wire connections to see
●
if the system is receiving + 12V.
Check if the crossover B+ power input is connected directly to
●
the battery.
Check the battery voltage; if low, recharge or replace it.
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Check if the crossover has a good ground connection (i.e.
●
Whether the ground wire is making good contact with a bare
metal spot of the vehicle chassis).
Check all ground connections of the entire system for good
●
contact with bare metal.
Check for speaker short: Disconnect speaker wire from ampli er;
●
test speaker and wire with a Volt/Ohm meter, if there is speaker
and metal contact, slightly enlarge the speaker mounting holes,
if there is a short in the speaker wiring, replace the entire speaker
wire or re-insulate any exposed wire with electrical tape.
Check all power wires to see if they are all connected directly to
●
the battery.
Check all the ground connections of the entire system for good
●
contact with bare metal of the vehicle chassis.
Check if the source unit and the crossover arc grounded at the
●
same reference point.
Install a 10 amp in-line lter on the red power wire of the
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crossover
If the whining noise persists, check the alternator diodes and
●
the voltage regulator.
This is commonly known as "radiated noise. It is NOT caused
●
by the crossover and thus is beyond the scope of this manual.
Please contact your local retailer/installer for assistance.
Output level of various channels not compatible, refer to section
●
titled SYSTEM CHECK.
The subwoofers are" out-of- phase" with each other, thus
●
cancelling the bass when the balance control is at the center
position. Check the wiring from the ampli er to the subwoofers
(positive "+"to positive "+"and negative"-" to negative" -").