Extron Electronics XTRA Full Rack Series User Guide - Manual (Page 19)

Step 1: Strip and insert the speaker wires into the connector and
tighten the captive screws. Be sure to observe the
correct polarity.
Step 2: Insert the wired connector into the amplifier output
and secure the locking screws on either side.
Do not tin the wires!
1
2
OUTPUT
l
Bridged output mode (XPA 2002 and XPA 2004) —
The output power of the XPA 2002 can be effectively doubled by using input channel
1 and bridging the outputs.
The output power of the XPA 2004 can be effectively doubled by using input channels
1 or 3 or both and bridging the respective outputs.
z z
XPA 2002: Bridged output mode toggle switch (input channel 1) —
Use a small screwdriver to toggle the recessed two-position toggle switch to either
bridged (up) or unbridged (down) for input channel 1. Bridging takes the signal
from Input 1 and outputs the signal from the + terminals of output channels 1
and 2 (see the diagram below).
BRIDGE
MODE
OFF
ON
z z
XPA 2004: Bridged output mode toggle switch (input channels 1 and 3)
— Use a small screwdriver to toggle the recessed two-position toggle switch to
either bridged (up) or unbridged (down) for the appropriate input channels (see
the diagram below).
ON
OFF
A B
BRIDGE
MODE
Bridging takes the signal from Input 1 (A) or Input 3 (B) and outputs the combined
signals of 400 Watts from the + terminals of output channels 1 and 2 (Bridge A)
and channels 3 and 4 (Bridge B).
XTRA Full Rack Power Amplifier Series • Operation 14