3 pin xlr wiring standard.
Xlr speaker cable wiring.
Xlr pinout balanced a balanced system is used in pro audio systems xlr wiring diagram shown below with an overall screen covering a twisted pair.
The only exception for the use of xlr microphone cables for xlr speaker connections is when powered speakers are employed.
These speakers contain internal amplifiers and speaker wiring and are therefore considered a line level device for which a standard balanced xlr microphone cable is perfectly suited.
In comparison with trs cables they can better protect your cable from signal interference as well as help to transport signal much further.
3 pin xlr connectors are standard amongst line level and mic level audio applications.
Pin 2 on the xlr is hot and carries the positive going signal whilst pin 3 is.
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Some manufacturers especially in vintage equipment do not follow this standard and instead reverse the polarity of pin 2 and 3.
3 pin xlr audio pinout.
The rear view is the end you solder from here are the connections on each pin.
Common uses are for mic cables monitor speakers audio interfaces pa applications and much more besides.