(3) In the bridged mode the power-amplifying
section of this receiver will normally be used to drive
your Left speaker, while a separate amplifier such as
a NAD 2400 will drive your Right speaker.
In that case, leave in place the upper jumper or
cable that connects PRE-OUT to MAIN IN in the left
channel. Disconnect the lower (right-channel) jumper
and connect a cable from the lower PRE-OUT jack to
the appropriate input jack on the power amplifier that
will be driving your Right speaker. (If you are using a
NAD 2400 in bridged mode, you will connect to its
upper (L) input.)
Note that in the bridged mode, both the 7400 receiver
and the companion 2400 power amp are driven
through the upper (L) input jack, regardless of which
speaker is being driven.
(4) Disconnect any speaker wires from both the
SPEAKERS A and SPEAKERS B terminals. Select
the cable from the speaker that is to be driven by the
bridged 7400. Connect its "positive" conductor to the
L+ terminal and its "negative" conductor to the R+
terminal in the "B" group only. DO NOT connect any
wires to the black terminals (R- and L-). The "A" group
terminals are not operational in the Bridged mode.