[BC] XLR Debate

[Steve Newman]

For what it's worth:

EIA Standard RS-297-A describes the use of the XLR3 for audio signal level applications:

      Pin Function 
      1 Chassis ground (cable shield) 
      2 Normal polarity ("hot") 
      3 Inverted polarity ("cold") 

Some audio equipment manufacturers reverse the use of pin 2 (properly the normal input) and pin 3 (inverting input). This reflects their usage since before any standard existed. Pin 1 is always ground, and many connectors connect it internally to the connector case.



Steve Newman
Steve Walker Productions
Opp, AL  36467