JBL PRX515 User Manual

Also see for PRX512M: User guide User guide

Contents

7The PRX500 series power amplifierAC POWER REQUIREMENTSStandard PRX500 series speaker systems are equipped with a multi-channel Crown Class-D power amplifierand loudspeaker specific DSP electronics and require appropriate AC power.Before plugging a PRX500 speaker into an outlet ensure that it is able to provide the appropriate AC power asset on the speaker.A robust AC supply is necessary for maximum performance. If the supply is too weak the bass performance maybe affected and if it sags (drops) too much the system may self-mute to protect itself. As soon as the appropriateAC supply is restored it will continue to operate. Plugging multiple systems into the same outlet and longextension cord runs may affect the AC supply to the systems.CAUTIONIn compliance with safety agency criteria and proper system operation, it is critical that the system installerobserve all electrical safety practices at all times and provide proper earth grounding for all AC Powerconnections.Powering upThe main power switch is located on the input panel on the back of the enclosure. Always ensure that thespeaker system is the last thing you power up, and the first thing to turn off when operating your complete PAsystem. 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 logo on the front of the enclosure.Changing VoltageYour PRX500 series speaker will typically be set at the factory to accommodate the power mains voltage in yourarea. Before you set up your PRX500 series speaker for the first time it is a good idea to verify that the settingof 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 theswitch to the appropriate setting.• Set the voltage selector switch to the 115V or 230V 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 BECOVERED BY WARRANTY.Operating TemperatureThe 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 temperaturehas returned to within its operating range it will turn back on. A Condition under which this may occur is whenthe system is operated in very high ambient temperatures and the heat sink on the rear of the enclosure is indirect sunlight. Always ensure adequate cooling and appropriate shade.