10
AUTO TURN ON
Push the AUTO TURN ON switch (Fig. 1, 10) to ON position. The amplifier detects now a voltage rise (6 Volts)
with a so called ”DC Offset” over the connected input signal on the HI LEVEL INPUT (Fig. 1, 8) when the head
unit will be switched on. Hence, the amplifier will also be turned on. As soon as the head unit will be turned off,
the amplifier turns also automatically off. In this case the turn-on connection (REM, Fig. 1, 11) is not needed.
NOTE:
The Auto Turn On function usually works with 90% of all head units, because they are equipped with
”High Power”-outputs. Only with a few older and still existing head units the Auto Turn On function is not wor-
king.
INPUT SENSITIVITY
OPERATING ELEMENTS
The input sensitivity can be adjusted to any head unit. Turn the volume control of your head unit to the center
medium position and then adjust the input level controls (Fig. 1,5) until you have an average medium level. This
setting usually provides sufficient power reserves at optimum weighted noise voltage.
HI LEVEL INPUT
The HI LEVEL INPUT (Fig. 1, 7) is suitable to connect the device input with speaker wires, if your head unit is
not equipped with pre-amplifier RCA outputs. Extend therefor every regarding speaker cable from your head
unit with appropriate speaker cables from your car audio retailer to the mounting location of the amplifier.
Then connect the each matching loudspeaker cable with the cables of the included HI LEVEL INPUT jack like
described below.
CAUTION:
Never use the HI LEVEL INPUT and the RCA inputs at the same time. This may damage the device
seriously. The loudspeaker cables of the HI LEVEL INPUT must have no contact to the ground (GND) by any
means.
grey
= right - positive
grey/white = right - negative
black/white = left - negative
white
= left - positive
VARIABLE LOWPASS FILTER
Set the desired crossover frequency of the low pass filter by using the controller (Fig. 1, 3). Thus to that only the
frequencies below the chosen crossover frequency will be amplified and the subwoofer plays more precised
and efficient.
VARIABLE BASS BOOST
PHASE SWITCH
By using the boost controller (Fig.1, 4) you are able to increase the bass boost level from 0 dB to 18 dB.
CAUTION:
Please use the bass boost with care.
The PHASE-switch (Fig. 1, 2) allows to set the phase between 0° or 180° to match the run time of the output
signal with the vehicle’s interior acoustic.
POWER INPUTS
BASS LEVEL
CONTROLLER
LPF
BOOST
LEVEL
50Hz
150Hz
MIN
MAX
0dB
+18dB
PHASE
AUTO TURN ON
REM
GND
+12V
PROTECT
POWER
LINE IN
ON
HI LEVEL INPUT
+
–
+
–
LOW LEVEL INPUT
OFF
180°
0°
FUSE
R
R
L
L
R
L
TR202A
