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Rear Panel Operation Mark Levinson
If you have a variety of amplifiers from different companies,
particular care must be taken to ensure that all the speakers are
“in phase” with each other, since some of the amplifiers them-
selves may invert polarity.
High quality single-ended outputs on Levinson-designed RCA
connectors are also provided, for compatibility with power
amplifiers lacking balanced inputs.
Connect the center and the subwoofer outputs of the Nº40
audio processor to the corresponding inputs on your power
amplifier(s).
Surround Left Rear &
Right Main Analog
Outputs
All eight of the main zone analog outputs of the Nº40 audio
processor are available in both balanced (XLR) and single-ended
(RCA) form. On any given channel, you can use either (or both)
as dictated by your system requirements.
Figure 3-25: Surround LR outputs. Slot C (along the bottom of the Nº40 audio processor) provides
high quality digital to analog conversion and volume control of
the surround left and the surround right channels.
The pin assignments of the XLR-type male outputs conform to
the international AES standard, and are as follows:
Refer to your power amplifier’s operating manual to verify that
the pin assignments of its input connectors correspond to this
description. If not, wire the cable so that the appropriate output
pin connects to the equivalent input pin, or reverse the leads of
your speaker cables to restore correct polarity.
If you have a variety of amplifiers from different companies,
particular care must be taken to ensure that all the speakers are
“in phase” with each other, since some of the amplifiers them-
selves can invert polarity.
High quality single-ended outputs on Levinson-designed RCA
connectors are also provided, for compatibility with power
amplifiers lacking balanced inputs.
Connect the surround left and the surround right outputs of
the Nº40 audio processor to the corresponding inputs on your
power amplifier(s).
right surr
left surr
analog outputs
slot C
Pin 1 Signal ground
Pin 2 Signal + (non-inverting)
Pin 3 Signal – (inverting)
Connector ground lug Chassis ground
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