Is there a standard for wiring balanced XLR-3 cables?
Yes. Connect pin 1 to ground/green, pin 2 to white, and pin 3 to black. Herb Hamilton suggests that you remember “George Washington Bridge” and then use the first letter of each word (GWB) to help you remember Green=1, White=2, and Black=3. This same wiring convention works for balanced line level signals and balanced microphone cables.
