Owner's Manual

AC Voltage Selection

115 V / 230 V AC Voltage Selector Switch

This switch is found on the underside of the chassis. Make sure the 115 V/230 V switch is set for

the correct AC line (mains) voltage before you plug in the JC 3 Jr.’s AC power cord.

Note: The JC 3 Jr. could be seriously damaged if the AC Voltage Selector switch is in the

wrong position for your voltage!

Prior to plugging your JC 3 Jr. into an AC power source, check the position of the

115v/230v switch on the JC 3 Jr.’s chassis bottom and do not depend on the 115

V or 230 V

markings on the carton.

The 115

V setting is correct for North America where the JC 3 Jr. can operate safely with AC line

voltages between 110 V-120 V. Most other countries will require the switch to be set to 230 V. With

the 230

V setting the JC 3 Jr. can operate safely with AC line voltages between 220 V-240 V.

Always turn off your JC 3 Jr. and disconnect its AC cord before making or changing the input,

audio output or trigger wire connections. Inserting or removing an input or output cable while the

JC 3 Jr. and your line stage preamp and power amplifier are turned on can result in a blast of

sound that can damage your loudspeakers. Make sure there is no strain or tension on any cables

that could cause them to pull loose.