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14
e pin assignments of these XLR input connectors are:
Pin 1: Signal ground
Pin 2: Signal + (non-inverting)
Pin 3: Signal – (inverting)
Connector ground lug: chassis ground
ese pin assignments are consistent with the standard adopted by the
Audio Engineering Society (AES14-1992).
If you are using your Classé power amplifi er with a Classé preamplifi er,
you’re all set – just take standard balanced interconnect cables and plug
them in. en engage that input on the power amplifi er by confi guring it as
described in Initial Setup.
If you are using another brand of preamplifi er, please refer to the operating
manual of your balanced-output preamplifi er to verify that the pin
assignments of its output connectors correspond to your amplifi er. If
not, have your dealer wire the cables so that the appropriate output pin
connects to the equivalent input pin.
2 Single-Ended (RCA) Input
Single-ended cables using RCA connectors are the most common form
of analog connection used in consumer electronics. When implemented
carefully and with use of high quality interconnecting cables, this standard
can provide excellent performance. Classé has gone to extraordinary eff ort
to ensure that the single-ended (RCA) inputs of your power amplifi er are
as good as possible. However, this connection standard cannot off er the
immunity from interference that balanced interconnection does—hence
our recommendation to use the balanced inputs when possible.
If you elect to use the single-ended inputs of your Classé power amplifi er,
you need to engage them by confi guring the amplifi er as described in
Initial Setup.
3 Speaker Outputs
Two pairs of high quality fi ve-way binding posts are provided on the
amplifi er, in order to facilitate “bi-wiring.”
In practice, bi-wiring involves connecting two (preferably identical) sets
of speaker cables between each amplifi er channel and its corresponding
loudspeaker. In many cases, the benefi t is a subjectively improved level of
clarity and detail from the speaker, as a result of being able to feed the two
separate sections of its crossover and driver complement with identical, yet
separate signals.
(Many high quality loudspeakers also off er two sets of connections on their
speakers. Generally, one set of the connections on the loudspeaker feeds the
portion of the speaker’s crossover network that supplies the woofer with its
signal; the other set of connections connects to the portion of the crossover that
supplies the rest of the speaker with the midrange and high frequencies.)