Bridged Operation; Connections For Balanced Bridged Operation - Madrigal Audio Mark Levinson ?20.6 Operating Manual

Connections for balanced

bridged operation

Figure 8: Connections for
balanced bridged
operation
Bridged operation
When greater power output is desired, two Nº20.6 amplifiers may be
bridged to drive load impedances of at least 2Ω.
Note: Make sure the loudspeaker is rated to handle extremely
high power levels. For example, the output power of a pair of
bridged Nº20.6 amplifiers is four times that of a single unit driving
the same load (see the chart below).
Nominal
Load Impedance
8Ω
4Ω
2Ω
*Continuous sine-wave power. Pulsed power will be higher.
When using Nº20.6 amplifiers in bridged mode with loudspeakers that
are biamp-able, we strongly recommend using a high-quality
electronic crossover and operating in the biamp mode.
For the best bridged performance, we recommend balanced
interconnection. If your preamplifier provides balanced output, follow
the steps below.
Nº20.6
(Non-inverted amplifier)
– +
–
– +
–
Nº20.6
(Inverted amplifier)
Bridged
Power Output
400W
800W
1250W*
PUSH
+
Balanced
bridging cable
PUSH
+
Loudspeaker
From preamplifier's
main output
– +
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