7
CONTROLS AND INDICATORS
1 • RCA input connectors: To connect the Pre output leads of the main unit to the amplifier
input. These inputs control the final stages.
2 • Adjustment of the gain of the Input: Adjusts input sensitivity of amplifier,
which can vary between 200 mV and 4V.
To adjust sensitivity, proceed as follows:
a)Set the volume control of your unit to 3/4 of its maximum output
b)Adjust the amplifier input gain controls until the maximum possible acoustic
pressure has been obtained without any distortion.
3 • Stereo/Mono switch: changes the output mode of the amplifier between
Stereo and Mono. If Mono is selected, the corresponding Left (mono) input is
used to operate the amplifier.
4 • 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 outputs .
c)High-pass: activation of the low-pass filter, i.e.
determination of the starting-point of the high frequencies
present at the outputs.
5 • Continuous adjustment/control of the 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.
ST
L
(mono)
4V
0,2V
30
600
Hz
35
40
50
60
80
125
300
Flat Low High
20Hz
20kHz
Flat Low High
20Hz
30 > 600Hz
Flat Low High
20kHz
30 > 600Hz
O/M SP 2.050 25/06/02 17:48 Page 7
