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9
AC Power Requirements
Standard PRX800 Series speaker systems are equipped with a multi-channel Class-D power amplier and
loudspeaker-specic DSP electronics and require appropriate AC power. Before plugging a PRX800 speaker into
an outlet, ensure that it is able to provide the appropriate AC power as required by the speaker.
A robust AC supply is necessary for maximum performance. If the supply is too weak, the bass performance
may be affected and, if it sags (drops) too much, the system may self-mute to protect itself. As soon as the
appropriate AC supply is restored, it will continue to operate. Plugging multiple systems into the same outlet and
the use of long extension cord runs may affect the AC supply to the systems.
In compliance with safety agency criteria and proper system operation, it is critical that the system installer
observe all electrical safety practices at all times and provide proper earth grounding for all AC Power
connections.
Powering Up
The main power switch is located on the input panel on the back of the enclosure. Always ensure that the
speaker system is the last thing you power up, and the rst thing you turn off when operating your complete PA
system. If speaker systems are daisy chained together, always turn off the last system in the chain rst. Power
“on” is indicated by the illumination of the blue LED on the front of the enclosure.
Operating Temperature
The design of the amplier is such that it is very energy efcient and, as a result, does not get very hot. In the
rare event that it does get too hot, it will automatically shut down to protect itself. When its temperature has
returned to within its operating range, it will turn back on. A condition under which this may occur is when the
system is operated in very high ambient temperatures or the rear of the enclosure is in direct sunlight. Always
ensure adequate cooling and appropriate shade.
CAUTION
THE PRX800 SERIES POWER AMPLIFIER
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