Setup guide

3
Selecting outputs for bridge mode (XPA 2004 only):
Bridging takes the signal from input 1 or input 3 or both and
outputs the combined output of 400 watts from the + terminals
of output channels 1 and 2 (Bridge A) or output channels 3 and
4 (Bridge B) or both. Toggle the bridged output mode switch up
(bridged) or down (unbridged) for the appropriate input channel.
Refer to “Bridged mode output” of the user guide for specific
wiring instructions when bridging the XPA 2004.
NOTE: When bridging outputs, the minimum load impedance
is 8 ohms.
4. a. Reconnect all power cords and switch on all other equipment before powering
up the power amplifier. The amplifier must be powered up last. The front panel
LED of the amplifier should light green.
b. Adjust the audio level using the rear panel adjustment screws. See the following
example illustration.
LEVEL
1 2 3 4
0
2
4
6
8
10
14
18
26
12
0
2
4
6
8
10
14
12
0
2
4
6
8
10
14
12
0
2
4
6
8
10
14
12
5. Use a small screwdriver to toggle this switch
between off (no filtering) and 80 Hz. The
XPA 2002-70V has two switches, one for each
output channel. The XPA 2003C-70V has one
switch for the 70V line distribution output channel
(channel 3). Setting the switch to 80 Hz prevents
the saturation of 70V speaker input transformers
by low frequency signals.
6. Connecting pin 2 to ground (pin 1) places the amplifier in standby mode. Standby
mode turns off all outputs, although the amplifier is still receiving power.
7. Use the included 2-pin, 3.5 mm captive screw connector to jumper the pins.
To Contact Closure Port
on Control Device
STANDBY
BRIDGE
8 ONLY
( )
1 2
BRIDGE A
8 / 4
8 Ohm
ON
OFF
A
BRIDGE
MODE
80 Hz
OFF
CH 2
80 Hz
OFF
CH 1
HPF
80 Hz
OFF
CH 3
HPF
XPA 2002-70V XPA 2003C-70V