Wisdom Audio Wisdom & Sage Series SC-1 - Manual (Page 15)

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http://www.markertek.com/Connectors-Adapters/Audio-Adapters/XLR-to-
RCA-Adapters/Switchcraft-Corporation/322X.xhtml
3 7 Channel Low (Woofer) Output
These seven balanced audio outputs carry the room-corrected “low pass”
portion of the audio spectrum, and must be connected to the amplifiers
that drive the woofer sections of the loudspeakers.
The pin assignments of this XLR-type male output connector are:
2 1
3
Pin 1: Chassis ground
Pin 2: Signal + (non-inverting)
Pin 3: Signal – (inverting)
Connector ground lug: chassis ground
These pin assignments are consistent with the standards adopted by the
Audio Engineering Society, and are used with the purpose-designed SA-
series power amplifiers from Wisdom Audio. If you elect to use a different
amplifier for your woofers, please refer to the operating manual of your
power amplifier to verify that the pin assignments of its input connectors
correspond to your Wisdom Audio SC-1. If not, wire the cables so that the
appropriate output pin connects to the equivalent input pin, in order to
preserve the polarity of the musical signal.
Using single-ended amplifiers If your power amplifier does not have balanced inputs, the adapter used
to convert from balanced to single-ended must “float” Pin 3 (the inverted
signal). This can easily be checked with an ohmmeter: the impedance be-
tween Pin 3 and either the center pin or the shield skirt on the RCA should
be infinite. Tying the output of Pin 3 to ground (as some adapters do) will
compromise the performance of the SC-1. Should you need them, prop-
erly wired adapters are available from Wisdom Audio for an additional
charge, or they can be purchased online at
http://www.markertek.com/Connectors-Adapters/Audio-Adapters/XLR-to-
RCA-Adapters/Switchcraft-Corporation/322X.xhtml.
4 3 Channel Subwoofer Output
These three balanced audio outputs carry the room-corrected sub-
woofer outputs, and must be connected to the amplifiers that drive the
subwoofer(s) in the system.
The pin assignments of this XLR-type male output connector are:
2 1
3
Pin 1: Chassis ground
Pin 2: Signal + (non-inverting)
Pin 3: Signal – (inverting)
Connector ground lug: chassis ground
These pin assignments are consistent with the standards adopted by the
Audio Engineering Society. Refer to the operating manual of your power
amplifier to verify that the pin assignments of its input connectors cor-
respond to your Wisdom Audio SC-1. If not, wire the cables so that the
appropriate output pin connects to the equivalent input pin, in order to
preserve the polarity of the musical signal.