16
Loudspeaker Connection: Mono-Bridge
Germanium Two
The bridge connection is performed at the L (8) and R– (8) 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 +L (8) and the minus (–) cable with the clamp R– (8) (Fig. 7).
The socket „INPUT“ (12) R+L must be occupied by a Y-RCA cable, which will then distribute the signal to both
RCA sockets, during mono operation.
The connection impedance of the loudspeakers during mono operation may not fall below 4
Ω
, in order that the
critical minimum connection impedance of 2
Ω
is maintained. A 2
Ω
loudspeaker connection is not permitted for
reasons of thermal power load limitations.
Note: An 8
Ω
loudspeaker impedance on the mono bridge represents a material impedance of about 4
Ω
on the
amplifier. At 4
Ω
the material impedance is only around 2
Ω
and at 2
Ω
it is only around 1
Ω
. The halving of the
impedance is achieved through the allocation performed by the mono clamps bridging the two internal amplifiers.
Figure 7: Loudspeaker Connection Mono-Bridged