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Problem
Solution
Protection/Red LED lighting
up
Turn down volume on your source unit to prevent overdriving.
Reset the subwoofer by turning it off and on again (see the section
“Protection Mode” on page 6 for more details). If the red LED still lights up,
the subwoofer is faulty and needs servicing.
No sound
Check that audio input connection is correctly and securely made.
If using low-level input connection, check the RCA cables are correctly and
securely plugged.
If using high-level input connection, check connection with the speaker wires
of your head unit.
Low output
Adjust the remote subwoofer control to increase sound level.
Input gain level is too low. Reset the input level control.
Check the frequency pass filter setting.
Distorted audio
Check that the input gain control is set to match the output level of your
source unit. Always try to set the input gain level as low as possible.
Check for short circuits on the speaker wires.
Check if the amplifier of the source unit is defective.
Audio noise
Keep the power cables away from the RCA cables.
Keep the RCA cables away from other electrical cables in the vehicle.
Check that the black ground wire from the high level input wire harness is
properly connected to the metal frame of the vehicle when using high-level
input connection.
Poor quality RCA cables can pick up radiated noise. Use only the best
quality RCA cables.
Check that a negative speaker wire is not touching the vehicle chassis.
Check that the source unit is properly grounded.
Check if noise originates in the source unit.
Subwoofer getting very hot
Check that the minimum speaker impedance for the subwoofer is correct.
Check that there is good air circulation around the subwofoer. In some
applications, it may be necessary to add an external cooling fan.
Auto power on not working
Check that high-level input connection is made.
Check that remote wire connection is not made.
Check that auto power on feature is activated by pressing the AUTO
TURN-ON switch on the subwoofer.