Problem
Active subwoofer
power up failure
No sound output
Low sound output
Buzzing noise
Squealing noise
interference
Distorted sound
output
Active subwoofer
temperature
increased
Engine noise
(static sound)
interference
Engine noise
(alternator whine)
interference
Solution
Examine if the ground connection is intact.
Examine if remote input has at least 5V DC.
Examine if battery power is connected correctly to the + terminal.
Ensure supplied voltage is minimum 12V.
Examine if fuse is broken and replace if necessary.
Restart the device if protection LED light is on.
Examine fuses and replace if necessary.
Examine ground connection is intact.
Examine if remote input has at least 5V DC.
Examine if RCA audio cables are connected to the right inputs.
Examine if speaker wiring is intact.
Reset Level Control
Examine the Crossover Control setting.
Observe if the device is still producing noise after turning on and off the amplifier.
If yes, examine if the cables are correctly connected and if the cables and radio
are in good condition.
Repair or replace if the cables or the radio are not in good condition.
Ensure RCA connections are properly connected.
Ensure input level of the device matches the signal level of the head unit.
Always set the input level to the lowest.
Examine if crossover frequency is set correctly.
Examine if speaker wire had short-circuit.
Examine the minimum speaker impedance for the amp models is correct.
Ensure good air ventilation around the device. Add external cooling fan if
necessary.
Usually caused by poor RCA cable quality, which release noise. Use only the
best quality cables, and route them away from power cables.
Examine if RCA cable are nowhere near or attached to the vehicle chassis.
Examine if head unit is properly connected to the wires.
If any of the following problem occur, please resort to Troubleshooting for the possible solutions. Consult
Blaupunkt authorized dealer if problem persist.
TROUBLESHOOTING
10
