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Operation
With the speakers and the source connected,
switch the rear mains switch to (1) = ON and flip
the
front
panel
toggle
switch
(Figure
1)
downwards to activate the amplifier. The blue
LED will come on. After switching to operating
mode the protective circuits take 5s to check all
circuits of the power amplifier before enabling
the speaker outputs.
There is no need to operate the mains ON / OFF
switch on the back side since the standby
power consumption is less than 0,5W. As it is
common practice, disconnect ALLEGRO from the
mains during a thunderstorm or when going on
vacation.
Protection circuits
ALLEGRO provides comprehensive protection for
both the amplifier and your loudspeakers,
including faults that may occur in your source
components.
If the unit is operated at high playback levels
with
insufficient
ventilation,
the
internal
temperature may become too high, triggering
the thermal protection circuitry. In this case the
amplifier will shut down, the front-panel status
LED will blink at a 1s (slow) rate.
8
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