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Do you mean the XLR (balanced) connector?
PIN 1 is ground and must be connected. PIN 2 is signal (+). PIN 3 is signal (-).
http://www.audiodesignline.com/howto/196603651
http://209.85.215.104/search?q=cache:St5lsP2JKpUJ:www.audiodesignline.com/howto/196604119+balanced+interfaces&hl=es&ct=clnk&cd=4&gl=cl&client=firefox-a
In any case, follow the signal path with a multimeter from the output pin of the opamp until it reaches the pin in question. ;-)
Regards,
M
2008/5/16 hypercatabol <hypercatabol@...>:
Hey guys, when replacing the PCB mounted connectors, there are 3 pins
- 2 at the rear and one at the front - which is the signal, and is it
ok to leave 1 ground pin unconnected?
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