The Prx600 Series Power Amplifier - JBL PRX600 series User Manual

The PRX600 Series Power Amplifier

AC Power Requirements
Standard PRX600 series speaker systems are equipped with a multi-channel Crown Class-D power amplifier
and loudspeaker specific DSP electronics and require appropriate AC power. Before plugging a PRX600
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 long
extension cord runs may affect the AC supply to the systems.
CAUTION
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 first thing to turn off when operating your complete PA
system. If speaker systems are daisy chained together always turn off the last system in the chain first. Power
"on" is indicated by the illumination of the blue LED on the front of the enclosure.
Changing Voltage
Your PRX600 series speaker will typically be set at the factory to accommodate the power main's voltage in your
area. Before you set up your PRX600 series speaker for the first time it is a good idea to verify that the setting
of the selector is appropriate for the power in your area. In the event that you do need to change the voltage:
• Make sure that the speaker is powered off and the AC is disconnected from the speaker.
• Directly above the male IEC connector on the speaker is a voltage selector. Just slide the
switch to the appropriate setting.
• Set the voltage selector switch to the 115V for (100-120V~) or 230V for (220-240V~) range setting
as required for your area.
• After having reconfirmed that the correct voltage is selected, reconnect the AC (IEC connector)
and power the unit up.
DO NOT UNDER ANY CIRCUMSTANCES OPERATE THE UNIT WITH THE WRONG VOLTAGE SELECTED.
DOING SO MAY RESULT IN SERIOUS DAMAGE TO YOUR SPEAKER SYSTEM WHICH WILL NOT BE
COVERED BY WARRANTY.
Operating Temperature
The design of the Crown amplifier is such that it is very energy efficient and as a result does not get really 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 and the heat sink on the rear of the enclosure is in
direct sunlight. Always ensure adequate cooling and appropriate shade.
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