9
ENGLISH
LOW PASS
This controller limits the frequency at CH3/4 upwards. The crossover frequency is adjustable from 50
Hz to 5000 Hz (5 kHz).
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AUTO TURN-ON
If your head unit does not have a turn-on signal (REM), you can use the automatic turn-on function of
the amplifier. This works in two ways, which can be set at the AUTO TURN-ON switch:
DC
: This method only works if you use the amplifier’s
HIGH LEVEL INPUT
. The amplifier then detects
a voltage rise to 6 volts when the head unit is turned on by a so-called “DC offset” and then turns on
the amplifier.
SIG.
: Select this method when using the
INPUT
RCA jacks. The amplifier then detects a voltage in-
crease in the incoming audio signal when switching on the head unit via the attached RCA cable and
then switches on the amplifier.
Note:
As soon as the head unit is switched off again, the amplifier switches itself off.
The terminal for the amplifier turn-on (Refer to page 6, section 2) can now be used to supply additional
amplifiers with a turn-on signal. Simply connect the REM terminals of the two amplifiers and make sure
that the other amplifier is in “normal” turn-on mode, which means that the
AUTO TURN ON
function
is disabled.
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BASS BOOST
This controller adjusts the bass boost from 0 dB to +12 dB at 45 Hz on channel pair CH3/4. In COPY
mode the bass boost is also effective on CH1/2.
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HIGH PASS
This controller limits the frequency at the respective channel pair (CH1/2 or CH3/4) downwards. Low
frequencies that can damage a loudspeaker are cut off. The crossover frequency is adjustable at
CH1/2 from 50 Hz to 5000 Hz (5 kHz) and at CH3/4 from 10 Hz to 500 Hz.
13
CH3/CH4 CROSSOVER
The CH3/CH4 X-OVER switch selects the desired operating mode of channel pair 3/4:
FULL:
Full-Range mode (the entire frequency range is amplified).
HP:
High-Pass mode (frequency is limited downwards, adjustable by the
HIGH PASS
controller).
LP/BP:
Low-Pass/Bandpass mode (frequency is limited upwards, adjustable by the
LOW PASS
con-
troller). The
HIGH PASS
controller then acts as a subsonic filter in this mode and limits the frequency
downwards (bandpass function).
Note:
If the HIGH PASS controller is set higher than the LOW PASS controller, no sound is heard.
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RLC
The RLC port is for connecting the cable of the included bass level remote controller. With this, the
bass level can be e.g. be adjusted from the driver’s seat. Only use the supplied bass remote control-
ler and the associated cable. The bass level remote controller only works in LP/BP mode (Low-Pass/
Bandpass) on channel pair CH3/4, in COPY mode also on channel pair CH1/2.
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