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Please consider that the fader- and balance control of the
head unit have the same effect on channels 3 and 4 as on
channels 1 and 2.
4-channel mode: When operating headunits with two
stereo outputs, all four speaker outputs are supplied with
the corresponding input signal. Channel 5 (subwoofer
output) is supplied by a sum signal of the 4 input signals.
5-channel mode: In this mode all RCA inputs must be
connected (all five channels). As channel 5 has a stereo
input, both should be used. In case only one input is con-
nected, the sensitivity must be adjusted.
When using the highlevel inputs in the 5 channel mode, the
5th RCA channel must be connected.
10, 14 & 21 Level control for input sensitivity
channels 1 to 5
These controls can be used to match the input sensitivity
of the individual channels to the output voltage of the
connected head unit. These controls are not volume
controls and are solely intended for the purpose of
sensitivity trimming. The control range extends from
0,2 to 6 volts.
Control 10: To adjust channel 1 and 2.
Control 14: To adjust channel 3 and 4.
Control 21: To channel 5.
11, 15 & 20 Bass-Boost evel control channels 1 to 5
To raise the bass signal from 0 to 18 dB at 45 Hz.
12 Switch for fullrange - highpass channel 1 and 2
To set the integrated, active crossover on highpass or
fullrange.
When the switch is set on HPF (highpass), the exact
crossover frequency for highpass can be adjusted with
control 13.
In position FULL (fullrange) the internal frequency
crossover is not active.
It is not possible to adjust a lowpass filter for channels
1 and 2, as these channels were optimized to operate
tweeters as long as the switch is in position HPF.
12
13 Frequency control for highpass channel 1 and 2
To adjust the crossover frequency from 15 Hz to 4000 Hz.
This control is not active before switch 12 is set on HPF
(highpass filter).
variabel
15 Hz
16 Switch for highpass - fullrange - lowpass / bandpass
channel 3 and 4
To set the integrated active crossover on highpass,
fullrange or lowpass / bandpass.
When the switch is set on HPF (highpass), the exact
crossover frequency for highpass can be adjusted with
control 11.
In position FULL (fullrange) the internal frequency cross-
over is not active.
In position LPF (lowpass) highpass is always active. This
means that a bandpass is formed in any case. When using
control 17 for highpass and control 18 for lowpass any
bandpass between 15 Hz and 4000 Hz can be adjusted.
Caution! To avoid a loss of sound pressure, make sure that
the crossover frequencies are seperated by 2 octaves
when adjusting the bandpass. The adjusted lowpass
frequency must always be higher than the highpass
frequency!
This means for example: If the lowpass signal is set on
320 Hz, the highpass should be lowered by 2 octaves to
80 Hz. (1 octave = double frequency or half frequency).
17 Frequency control for highpass channel 3 and 4
To adjust the crossover frequency from 15 Hz to 4000 Hz.
This control is not active before switch 12 is set on HPF
(highpass filter).
variabel
15 Hz
2K
5K
Hz
4 kHz
2K
5K
Hz
4 kHz
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