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Macro-Tech 5002VZ Power Amplifier
Reference Manual
Note: A method for paralleling multiple amplifiers for fail-
safe redundancy is available from Crown’s Technical
Support Group.
3.3.2 Bridge-Mono Operation
Bridge-Mono mode is intended for driving loads with a
total impedance of 4 ohms or more (see Section 3.3.3 if
the load is less than 4 ohms). Installing the amplifier in
Bridge-Mono mode is different from the other modes
and requires special attention.
To activate Bridge-Mono mode, turn the amplifier off,
wait at least 10 seconds, and then slide the stereo/mono
switch to the BRIDGE MONO position. Both outputs re-
ceive the signal from the Channel 1 input, with output
Channel 2 inverted so it can be bridged with the Chan-
nel 1 output.
Note: The Channel 2 input jack and level control are
disconnected in Bridge-Mono mode. A signal feeding
Channel 2 will have no effect on the output.
Connect the load across the Channel 1 and 2 positive
(+) terminals attaching the positive lead from the load
to Channel 1 and the negative lead from the load to
Channel 2 as shown in Figure 3.5. The negative (–) ter-
minals are not used and should not be shorted. In addi-
tion, the connected load must be balanced (neither side
connected to ground).
CAUTION: Be certain that every device connected
to the Bridge-Mono output is balanced (not ground
referenced). If the input signal ground is not fully
isolated, connecting an output lead to ground may
cause oscillations.
Fig. 3.5 Bridge-Mono Wiring
+
MIXER
–
LOUDSPEAKER
BRIDGE-MONO MODE
Macro-Tech 5002VZ
CH-2 OUTPUTS CH-1 OUTPUTS
STEREO
BRIDGE
MONO
PARALLEL
MONO
THE CHANNEL 2
INPUTS ARE
NOT USED.
DO NOT USE THE
NEGATIVE
OUTPUT
TERMINALS.
ONLY USE THE
CHANNEL 1 INPUT.
DO NOT USE THE
NEGATIVE
OUTPUT
TERMINALS.
FXQ
PUSH PUSH
CAUTION: TURN OFF AMPLIFIER
BEFORE CHANGING THIS SWITCH!
STEREO
BRIDGE
MONO
PARALLEL
MONO
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