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XPA Gen3
Configuration and Operation
Line Voltage
The XPA Gen3 can operate from any line voltage between 100 VAC and 250 VAC and from any line
frequency between 50 Hz and 60 Hz. The amplifier will automatically detect which line voltage it
is connected to and configure itself accordingly.
AC Power Switch (rear panel)
The rear-panel AC Power switch controls the main AC power for your XPA Gen3. When this switch
is in the Off position, the amplifier will not operate. Turning it On will put the XPA Gen3 into
Standby mode.
AC Circuit Breaker (rear panel)
If an electrical power fault occurs, the button on the rear-panel Circuit Breaker will pop up. When
the Circuit Breaker button is up, the XPA Gen3 will not operate, and none of the Status LEDs will
be lit. The Circuit Breaker is reset by pressing the button firmly in.
Standby Switch (front panel push button)
Press to switch the amplifier On; press again to return to Standby; the halo ring around the button
illuminates amber for Standby and blue for On.
Un-Balanced / Balanced Selector Switches
Independently switch between the Unbalanced (RCA) and Balanced (XLR) inputs for each input.
Up selects the Unbalanced input and Down selects the Balanced input. Only one input can be
used at once for each input. (Both a balanced and an unbalanced source may be connected at the
same time, and the switch used to select between them, but only one will be active at any given
time.)
Status LED Switch
Disables the front panel status LEDs when set to Off.
Trigger Input and Output
When a trigger cable is connected to the Trigger Input (on the rear panel), and a trigger signal
is received (between 5-20 V - AC or DC), the XPA Gen3 will switch from Standby to On; when the
trigger signal ceases, the XPA Gen3 will return to Off.
The trigger is typically connected to the preamp or pre/pro that provides a signal source for the
XPA Gen3, and set to turn the XPA Gen3 on when the preamp or pre/pro is turned on.
Whenever the XPA Gen3 is On, the Trigger Output will assert a 12 VDC signal, which may be used
to turn on other trigger-enabled equipment.
