The bridge connection is performed at the clamps “FRONT” +FL (6) and FR– (6) or “REAR” +RL (7) and RR– (7)
with the marking "BRIDGED". The clamps L– and R+ not used for this mode of operation must not be occupied!
Connect the plus (+) cable of the loudspeaker at the clamp “FRONT” +FL (6) or “REAR” (7) +RL and the minus
(–) cable with the clamp “FRONT” FR– (6) or “REAR” RR– (7) (Fig. 8).
The socket „LOW INPUT“ FRONT (
8
) FR+FL and/or “LOW INPUT” REAR (9) RR+RL must be occupied by a
Y-RCA cable, which will then distribute the signal to both RCA sockets, during mono operation.
Recommendation: The amplifier part „FRONT“ is intended for use as broadband or high-pass for the front
system. A mono-bridge connection for the amplifier part „Front“ is only recommended for
broadband and/or high-pass operation mode when the amplifier, for purpose of maximum
performance, is used separately for the left and right sides.
Use amplifier part „REAR“ over the low-pass at 80 Hz for a subwoofer in mono-bridged
connection. Use amplifier part „FRONT“ over the high-pass at around 60 Hz for a kickbass
front system (Fig. 9).
The connection impedance of the loudspeakers during mono operation may not fall below 4Ω, in order that the
critical minimum connection impedance of 2Ω is maintained. A 2Ω loudspeaker connection is not permitted for
reasons of thermal power load limitations.
Note: An 8Ω loudspeaker impedance on the mono bridge represents a material impedance of about 4Ω on the
amplifier. At 4Ω the material impedance is only around 2Ω and at 2Ω it is only around 1Ω. The halving of the
impedance is achieved through the allocation performed by the mono clamps bridging the two internal amplifiers.
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