1
PROTECT LEDs
Protection pilot lights.
If these LEDs light up, this indicates that one of the various
protections safeguarding the different sections of the amplifier and
the loudspeaker enclosures has tripped due to an operating fault.
In these cases, the power output is normally switched off until
normal operating conditions are restored.
The following is a description of all the P SERIES protections:
1) LOUDSPEAKER PROTECTION: in the event of malfunction,
a sensor located on the power outputs is able to break the circuit
avoiding that current peaks reach the speakers and damage them
2) THERMAL PROTECTION ON THE HEATSINK: this
protection intervene whenever there is an excessive rise in
temperature of the internal heatsink.
3) SHORT CIRCUIT PROTECTION: trips in the event of a short-
circuit or overload, limiting the output current.
Some protection situations require the amplifier to be switched off and
then back on for normal operating conditions to be restored.
2
LIMIT LEDs
Amplifier status indicators: these are LEDs able to indicate,
for channels A and B, the operation of the internal limiter, when
inserted, or the clipping of the amplifier.:
These 2 LEDs are POST-LEVEL: in other words they display the
status of the signal when it has already been regulated by the input
level controls.
3
SIGNAL LEDs
Signal status indicators: these are LEDs able to indicate, for
channels A and B, a signal presence in the inputs of the amplifier.
4
LEVEL
Control of the input level of the external signal: operates with
continual values which vary from
fully closed (position ¥ -
Functions & controls
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