Balanced Normal (Non-Inverting) Operation; Operation - Mark Levinson 27.5 Operating Manual

Balanced normal
(non-inverting) operation
Figure 5: Connections for
balanced normal
(non-inverting) operation
PRECAUTION
If your preamplifier is equipped with a balanced main output, and
particularly if long cable lengths are required between your
preamplifier and the Nº27.5, it's best to wire the Nº27.5 for balanced

operation.

Refer to your preamplifier's operating manual to verify that the pin
assignments of its outs correspond to Figure 3. If they don't, wire the
connector so that the appropriate output pin connects to the
equivalent input pin.
Before inserting the output-cable connectors, remove the shorting
strap from the Nº27.5's XLR-type inputs. Connect your preamplifier's
left-channel balanced main output to the left-channel XLR-type input
on the rear panel of the Nº27.5. Connect your preamplifier's right-
channel balanced main output to the right-channel XLR-type input on
the rear panel of the Nº27.5.
Right
Loudspeaker
+ –
For proper balanced operation, NEVER insert a connector (pre-
shorted or otherwise) into the RCA-type inputs on the rear panel
of the Nº27.5.
From preamplifier main output
Right Left
channel channel
PUSH PUSH
+ – – +
Nº27.5
Left
Loudspeaker
– +
5