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ENGLISH
REAR PANEL
7
Balanced audio input (one per channel, female XLR connector)
Cable male XLR (balanced) wiring:
8
Balanced parallel audio output
(one per channel, male XLR connector)
This output provides a copy of the signal present on the respective channel input and it is useful to
link other amplifiers.
9
Internal limiter on / off switch
(one per channel)
ON: the internal limiter ensures the proper amplifier channel operation (even if the input signal is too
high) and protects loudspeakers against potentially damaging distorted output signals.
OFF: the internal limiter is disables in the respective channel.
0
Input sensitivity / voltage gain selector
(one per channel)
Available options are:
1.4 V
(input sensitivity),
32 dB / 26 dB
(voltage gain).
Use this switch to match the amplifier input sensitivity / voltage gain to other connected
equipments.
1.4 V :
this setting set to 1.4 V the input level required to get the maximum power output from the
amplifier (use this setting for standard operation, with no ‘system controllers’).
32 dB:
the amplifier voltage gain is fixed to 32 dB (output / input ratio will always be 32 dB, no
matter what the input and the rated output power of the amplifier are).
26 dB:
the amplifier voltage gain is fixed to 26 dB.
‘System controllers’ are sometimes used in high power sound systems. In these systems, controllers
are set according to loudspeaker specifications and drive amplifiers in a way to get the best results.
Yet, the optimum controller operation is achieved only when all system amplifiers are ‘gain matched’;
one controller can be used to drive multiple amplifiers. For instance, if all amplifiers are set to 26
dB, a 0 dB input signal will have a 26 dB gain in all amplifier outputs (any increase / decrease in an
amplifier will be accurately repeated by any other amplifier in that system).
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P {
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SHIELD
– ground
– hot
– cold
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