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Appendix
The wiring method for unbalanced connections with XLR connectors to
RCA/Phono phone connectors using shielded twisted pair cable (2 wire + shield) is as
follows:
XLR Pin 1 (GND) to cable shield with no connection on the other end
XLR Pin 2 (+) to signal wire and to the Phono center pin
XLR Pin 3 (-) to the other signal wire and to the Phono sleeve
Unbalanced Connections with Single Conductor Cable
In some cases it may be necessary to use single-conductor cable to adapt to unbalanced
devices. These cables are considerably more susceptible to interference and grounding
problems than the two conductor cables shown above. Two-conductor cables should
be used whenever possible.
The wiring method for unbalanced connections with XLR connectors to
unbalanced ¼” phone connectors (tip and sleeve only) using coaxial cable (1 wire +
shield) is as follows:
XLR Pin 1 (GND) no connection
XLR Pin 2 (+) to signal wire and to the ¼” phone tip
XLR Pin 3 (-) to the cable shield and to the ¼” phone sleeve
1
2
3
XLR Male
or Female
2 Conductor shielded cable
RCA/Phono Plug
(Unbalanced)
1
2
3
XLR Male
or Female
Single conductor shielded cable
Tip
Sleeve
1/4" Phone Plug
(Unbalanced)
