QSC Audio SRA 2422 - Manual (Page 17)

17
Bridge Mode
In bridge mode, both output
channels are interconnected into
one, higher power output. The
result is one output with about 4
times the peak power and about 3
times the sustained power of a
single channel.
Use CH1’s gain control, clip limiter,
and LF filter. Use channel 1’s XLR or
RCA input.
Output connection is different for
bridge mode; the positive output for
each channel gets connected to the
loudspeaker. Page 24 details bridge
mode output connections for
binding posts, and page 26 for
Speakon bridge output connections.
SETUP-
Operating Mode Selection: Bridge
Bridge Mode Notes:
•To operate in bridge mode, set switches 4, 5, 6
to the left and switch 7 to the right position.
•Input: Use CH1’s XLR input connector.
•Output connections: Use the two red binding
posts. CH1 red binding post= positive, CH2 red
binding post= negative; or use CH1 Speakon
terminal 1+ and 2+ (1+ is positive).
•Use CH1’s LF filter, clip Limiter, and gain
control. Set CH2’s clip limiter to the same
setting as CH1’s.
Bridge Mode: mode switches 4, 5, and 6
to the left, and switch 7 to the right.
CH1 Input
XLR or RCA
Do not useCH2
input! CH2 input
is internally
bridged with
CH1.
CH1+
Output
CH2+
Output Single, high power
loudspeaker
SRA amplifier
Mode switches
set for bridge