5.2 LOW-PASS FILTER WITH ADJUSTABLE CROSS-OVER FREQUENCY
Set the desired cross-over frequency with the control (4). This makes the filter adaptable to the installed woofer’s
sound requirements. The filter’s high edge steepness is responsible for the precision reduction of medium and
high frequency ranges.
5.3 SUBSONIC FILTER
The subsonic function reduces the lowest bass frequencies. The reduction rate may be infinitely adjusted with
the regulator (5). This allows distortions produced by excessive loudspeaker membrane movements to be
effectively minimized without reducing the utilizable bass levels.
5.4 BASS-BOOST
The bass-boost function (3) is used to increase or equalize the lower bass frequencies.
5.5 VOLUME REMOTE CONTROL
The volume may be adjusted by using the supplied remote control. Please observe during installation that the
remote control line shouldn’t be routed along the same side of the vehicle as the power supply cables. The
remote control unit should be mounted on the dashboard or at any other easily accessible position. Now, the
subwoofer volume may be adjusted independently from the settings at the radio.
5.6 OUTPUTS FOR CONNECTING ADDITIONAL AMPLIFIERS
The input signal of the INPUT connections INPUT L and R (1) is forwarded directly to the OUTPUT (6) L and
R jacks. The OUTPUT connections allow the use of additional amplifiers without requiring additional T-plugs
and cables.
FIG. 1 POWER SUPPLY / REMOTE SWITCH-ON CONNECTION
(1) GND terminal for the ground, to the battery’s minus pole
(2) REM terminal for remote switch-on
(3) Terminal for +12 V battery voltage
(4) Battery
(5) Cable fuse
(6) To your car radio’s automatic aerial connection
If your car is not equipped with an automatic aerial connection, connect this cable’s plus pole (+) to the
ignition lock. An on/off switch should be inserted in this case. Make sure that this switch is switched off if
the amplifier is not used.
FIG. 2 OPERATION WITH STEREO CAR RADIO
Connect and set the amplifier as shown in Fig. 2 if it is to be controlled by a car radio with two output channels.
Operation of the low-pass filter used is described in Chapter 5.2.
(1) To the car radio, left output
(2) To the car radio, right output
(3) Subwoofer
FIG. 3 OPERATION WITH ONE CAR RADIO WITH SUBWOOFER OUTPUT
(1) To the car radio, subwoofer output
(2) Subwoofer
