- 5 -
8. Low Pass Filter (LPF)
Use this control to define the frequency range you want the subwoofer to receive. The subwoofer will only
receive the frequencies below the one you set to reproduce sound.
Tip:
If the other speakers of your audio systems are weak on the mid frequencies, set the LPF control
relatively high. If the midrange is well covered by the other speakers of your audio system, set the LPF
control relatively low to only receive lower frequency signal.
9. Auto Power On
This function works only with high level input connection, and make sure the remote wire is not connected
to the remote terminal on this subwoofer.
Press ON or OFF switch to activate or deactivate the function. If activated, the subwoofer will automatically
power on or off whenever your source unit is turned on or off.
10. Status Indicators
Green LED: the subwoofer is powered on and operational.
Red LED: the subwoofer is in protection mode and not operational. This problem is caused by input
overload, short circuit or extremely high temperature.
11. Phase Control
Press to improve bass response (no or little bass sound) caused by time alignment problem in the audio
system. This problem usually results from having this subwoofer at a different distance from the listener
than the other speakers in the audio system.
Subwoofer Setup Procedure
1.
Secure this subwoofer in your vehicle. See the section “Mounting” on page 6.
2.
Disconnect the negative terminal on the vehicle battery to prevent a short circuit.
3.
Establish audio signal input (low-level or high-level inputs). See the section “Low Level Input Wiring” or
“High Level Input Wiring” on page 7.
4.
Make power connection on this subwoofer. See the section “ Power Connection” on page 8.
5.
Recheck all connections to ensure correct and secure power/signal inputs.
6.
Set the input gain control (INPUT GAIN) to the minimum position.
7.
Reconnect the negative terminal on the vehicle battery.
8.
Turn on your source unit, then this subwoofer automatically turns on.
9.
Set the source unit volume to about 3/4 full level, then adjust this subwoofer’s input gain control (INPUT
GAIN) to just below the level of distortion.
10.
Fine tune the various controls on this subwoofer to obtain best results.
Important notes on input level control
• The input gain control (INPUT GAIN) is designed only to adjust the input level of the subwoofer in order to
match the output level of your source unit. It is not a volume control!
• Never adjust the input level to maximum unless your input level requires it.
• Failure to notice these instructions will result in an input overload to the subwoofer and excessive audio
distortion. It can also trigger protection mode, or may cause damage to the subwoofer or your speakers.