Desperately need help with XLR pass through

[ripple_fx1]

pin1 is ground...
Sound System Interconnection

[vince @ speck]

Originally Posted by josh22276

Ok so I started building a XLR pass through panel so I don't have to crawl behind the rack to plug in mics, snakes etc.

I used the Middle Atlantic 2 space universal punch out panel (32 channel), and the Neurtik NC3FD-L-B-1 connectors. I wired it with Mogami 2932 8 channel snake (2 of them for 16 channels). Male XLR's on one end and the other end soldered to the connectors on the panel. I twisted the drain wire and the ground wire together and soldered them to pin 3 (ground) hot and cold went to the correct pins of course.

Everything was hooked up in the rack,, worked fine with the dynamic mics when testing, however I couldn't get phantom power through for the condenser mics.

What did I do wrong? Any help will be greatly appreciated, I'm at the end of my nerves now.


I attached a photo of the XLR connector in the panel. I already removed all cabling to start over.

Pin 2 - high (+)
Pin 3 - low (-)
Pin 1 - Shield

Move your ground/shield to pin 1

[josh22276]

Originally Posted by ripple_fx1

pin1 is ground...
Sound System Interconnection

Ahhhhh crap!!! Thanks guys, I can't believe I did that. :-(

[josh22276]

Originally Posted by ripple_fx1

pin1 is ground...
Sound System Interconnection

One more question.

What is the square terminal for to the left and above pin 1?

[brianroth]

XLR pin 1 is isolated from the metal of the connector. That fourth tab is used to strap pin 1 to the chassis metalwork. In your application, I'd ignore it.

Bri

[josh22276]

Originally Posted by brianroth

XLR pin 1 is isolated from the metal of the connector. That fourth tab is used to strap pin 1 to the chassis metalwork. In your application, I'd ignore it.

Bri

Ahhhh ok. Thanks a bunch Brian!

Much appreciated guys, you saved a bunch of hair from being pulled out. :-)