CONTROLS AND INDICATORS
1 • RCA Front input connectors: To connect the Pre output leads of the main unit to the
amplifier input. These inputs control the final stages of the FRONT section.
2 • Adjustment of the gain of the Front Input: Adjusts input sensitivity of
amplifier, which can vary between 200 mV and 4V.
3 • Front Crossover switch: selects the output mode of the amplifier by activating the Low-
pass or High-pass filter.
a) Flat: the amplifier will reproduce the complete audio
range in relation to the signal applied to the input.
b) Low-pass: activation of the low-pass filter, i.e.
determination of the finishing-point of the low frequencies
present at the Front outputs .
c) High-pass: activation of the low-pass filter, i.e.
determination of the starting-point of the high frequencies
present at the Front outputs.
4 • Continuous adjustment/control of the Front Low-Pass or High-Pass
frequencies: once the low-pass or high-pass filter is inserted, the crossover
frequency can be adjusted in continuous mode between 30 Hz and 600 Hz.
5 • 4CH/2CH/ input mode switch: selects the input configuration of the amplifier in the
following ways:
a) "4ch": requires connection of all four input channels, so that they can all
function.
b) "2ch": If the main unit puts out two signals only, these must be connected to
the Front input, to allow all four output channels to function.
Note: Sensitivity adjustments will, in any case, remain independent.
Flat Low High
Flat Low High
Flat Low High
7
4V
0,2V
20Hz
20kHz
20Hz
30 > 600Hz
30 > 600Hz
20kHz
60
80
50
Hz
40
125
300
35
30
600
2ch
4ch
2ch
4ch