Wiring XLR-3 socket for Sennheiser

[alfadog]

I have a couple of nice Sennheiser ANR headsets that I bought on eBay. Problem is that they burn through batteries at a fierce pace. The battery pack connects to the headset with an XLR-3 connector and you can panel mount a socket to power them. I will be working with my A&P on this but curious if anyone has ever done this and knows how to wire it. I have a query in to Sennheiser.

As below and I know I can get them a lot cheaper.

http://www.mypilotstore.com/mypilotstore/sep/1472

 

[flyingron]

Pin 1 +, Pin 2 ground, Pin 3 not connected

Looking at the picture you posted, pin 1 is the top left one, pin 2 is the top right, pin 3 is the bottom one.

 

[alfadog]

Pin 1 +, Pin 2 ground, Pin 3 not connected

Looking at the picture you posted, pin 1 is the top left one, pin 2 is the top right, pin 3 is the bottom one.

Thanks. I will also check the polarity on the battery pack but was wondering if the third pin did anything. Can't see why it would and your post confirms that.

 

[jnmeade]

You can also get a cigar lighter adapter for them if you want to try that before adding the plug.