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The CH3/CH4 X-OVER switch selects the desired operating mode of channel 3/4:
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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 controller). The HIGH PASS
controller then acts as a subsonic filter in this mode and limits the frequency downwards (bandpass function).
NOTE: If this is set higher than the LOW PASS, no sound is heard.
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
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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.
VOX: Select this method when using the INPUT RCA jacks. The amplifier then detects a voltage increase 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 (page 15#2, REM IN/OUT) 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.
The BASS BOOST controller adjusts the bass boost continuously from 0 dB to +12 dB at 40 Hz on channel pair 3/4.
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NOTE: Always use this controller with care. A permanently too high bass boost could damage your speakers!
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The REMOTE 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 controller and the associated cable. The bass level remote
controller only works in LP/BP mode (Low-Pass/Bandpass) on channel pair 3/4, in COPY mode under CH1/CH2 X-OVER also
on channel pair 1/2.
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If your head unit does not have RCA preamp outputs, you can use the amplifier's HIGH LEVEL INPUT as the signal input. To do
this, simply connect the loudspeaker cables of the head unit to the enclosed cable plug as follows:
CH4
CH3
CH2
CH1
–
–
–
–
CH4
CH3
CH2
CH1
+
+
+
+
FUNCTIONAL INSTRUCTIONS
White:
CH1 / left front +
White-Black:
CH1 / left front –
Gray:
CH2 / right front +
Gray-Black:
CH2 / right front –
Green:
CH3 / left rear +
Green-Black:
CH3 / left rear –
Purple:
CH4 / right rear +
Purple-Black:
CH4 / right rear –
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