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Macrom st 2100 Manual

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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.
STL(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
20kHz30 > 600Hz
O/M ST 2.100 25/06/02 18:28 Page 7
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