Quick XLR Socket Install Question

[franspambot]

Hello,

I have a quick question. I am building one of the ghent audio hypex case kits and I am currently trying to wire the xlr socket. I have 3 connections, 1, 2, and 3F. Based on the picture they post, 2 is the live connection (for the blue cable). Now I have a white cable (negative, I assume) and the ground from the wire itself.

My question is, do I connect the ground to 1 and negative to 3F?

Please see the attached picture for clarification.

Many thanks.

 

[JonSnell Electronic]

The default wiring for all XLR connectors is;
Pin 1 Ground.
Pin 2 +ve signal.
Pin 3 -ve signal.


If you are not using a balanced signal, connect 3 to 1.

 

[franspambot]

Thank you. I will be using a balanced signal so I'll connect the ground to 1. That F by the 3 confused me. Wonder what that stands for?

 

[Speedskater]

the XLR Pin 1 is shield (that's chassis). it's not circuit ground.

 

[PRR]

> That F by the 3 confused me.

Might be "Female".

Why? Because seen from the rear, the three terminals go 1-2-3 or 3-2-1 depending on sex. The wire-person may not see the face of the connector. An "M" or "F" on the terminals may be faster than looking at the 123/321 order.

 

[Kay Pirinha]

It's so easy to wire XLR connectors the right way: Translate 1-2-3 to X-L-R which itself stands for Xreen-Life-Return .
Best regards!

 

[simon7000]

On most XLR style connectors there is a fourth tab that is the chassis connection. Some folks jump that to pin 1. The careful use a capacitor for that.

The one you have does not have a chassis connection. So depending on your circuit it may have a chassis connection.

Another approach with trully balanced circuits is to only connect the shield at the send end.

I suspect you have differential inputs which are a bit different. They will work with a shield and just one other pin connected, but they work better with both other pins connected.

If confused consider the original balanced audio technique with transformers for send and receive.