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Verfügbare Sprachen
HIGH LEVEL INPUTS & AUTO TURN ON
The high level inputs under HIGH LEVEL INPUT (Fig. 5) 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 speak-
er 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.
ATTENTION: Never use the high level inputs and the RCA inputs at the same time. This may damage
the device seriously.
The amplifier detects a voltage rise (6 Volts) with a so called "DC Offset" over the connected input signal on the
high level inputs under HIGH LEVEL INPUT (Fig. 5) when the head unit will be switched on. Hence, the ampli-
fier 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. 2,2) is not needed.
ATTENTION: 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 head units the Auto turn-on function is not working.
VARIABLE HIGH PASS FILTER (FRONT & REAR)
If the amplifier is to be used for mid-range/tweeter loudspeakers, set the switches X-OVER MODE (Fig. 1,3
and fig. 1,9) to HP. Then set the desired cross-over frequency on the HIGH PASS controller (Fig. 1,2 or fig.
1,8). Thus to that only the frequencies above the chosen cross-over frequency will be amplified. This effec-
tively minimizes distortions and overloads at lower frequencies. A good point to start is at 125 Hz.
If you use big loudspeakers (>20 cm) set X-OVER MODE (Fig. 1,3 and 1,9) to FULL. In this case, the HIGH
PASS controllers (Fig. 1,2 or fig. 1,8) are without function.
VARIABLE LOW PASS FILTER (REAR)
If the amplifier is used to drive a subwoofer on REAR, set the switch X-OVER MODE (Fig. 1,9) to LP/BP. Set the
desired cross-over frequency by using the controller LOW PASS (Fig. 1,10). Thus to that only the frequencies
below the chosen cross-over frequency will be amplified and the subwoofer plays more precise and efficient.
In LP/BP mode, the controller HIGH PASS (Fig. 1,8) can also be used to limit the frequency response down-
wards, for example to produce a bandpass/subsonic signal. ATTENTION: If the controller HIGH PASS (Fig.
1,8) is set higher than the he controller LOW PASS (Fig. 1,10), no audio signal is heard.
VARIABLE BASS BOOST (REAR)
By using the BASS BOOST controller (Fig. 1,11) you are able to increase the bass enhancement from 0 to 12
dB. ATTENTION: Use the BASS BOOST wisely!
BASS LEVEL REMOTE CONTROLLER (REAR)
With the included bass level cable remote controller (Fig. 1.12) you are able to adjust the bass level e.g. out
of the driver's seat. The remote controller should only be used when you operate the REAR channels in LP/
BP mode with a subwoofer.
PROTECTION CIRCUIT
The POWER/PROTECT LED (Fig. 1,1) lights up green, if the amplifier is in operation.
The POWER/PROTECT LED (Fig. 1,1) lights up red, when the amplifier is overheated, or a short circuit occurs
respective a too low impedance load is connected to the speaker outputs. If this events, the internal built-in
protection circuit shuts down the amplifier automatically. The amplifier should work again properly after you
have solved the problems.
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