Making an out-of-phase XLR cable

[kevk]

Greetings.

I have certain preamps which have no phase switch, and there are times wherein I need to flip the phase. My apologies in advance if this is a bonehead question, but couldn't I make an out-of-phase XLR cable by reversing pins 2 and 3? In other words: in-phase XLR:
pin:
1->1
2->2
3->3

out of phase XLR:
1->1
2->3
3->2

Correct? Or am I shrooming?

Thanks in advance,
-kk

[airmate]

you're absolutely right. a dedicated phase switch doesn't do anything else but reversing 2 and 3.

[nosebleedaudio]

You could put it in a turnaround or barrel connector.

[Waylon]

I generally keep a few of these on hand, just get a male and female XLR connector and about 6 inches of wire, and be sure to clearly label it as a polarity reversed cable... someone will use it in the wrong application one day

While you are at it, you can also make a couple these with pin one lifted, in case you ever need to isolate an audio ground... but then I do a bunch of live stuff as well, where this comes in handy pretty much daily.