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HIGH LEVEL INPUT
The HIGH 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 HIGH LEVEL INPUT jack
like described below.
CAUTION: Never use the HIGH LEVEL INPUT and the RCA inputs at the same time. This may damage the
device seriously. The loudspeaker cables of the HIGH LEVEL INPUT must have no contact to the ground
(GND) by any means.
REMOTE
LEVEL
MIN
MAX
Q202A
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 HIGH 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.
OPERATING ELEMENTS
INPUT SENSITIVITY
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.
VARIABLE Low pass 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
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.
PHASE SWITCH
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.
10
LINE IN
HIGH LEVEL INPUT
L
L
+
–
grey
grey/white
black/white
white
+
R
R
–
LOW LEVEL INPUT
POWER INPUTS
FUSE
R
= right - positive
= right - negative
= left - negative
= left - positive
L
GND
REM
+12V
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