I have an old ECM-77 mic where the xlr connector was cut off... I would like to attach a 1/8" mini-plug so I can use this mic with a Sennheiser ew100 wireless system. Can this be done? I need to know which wires to solder to the plug?
I apologize. There was something about my answer that bothered me and I've just been too involved with other things til this morning. I mis-read your question.
Unfortunately, the wireless mic mfgrs have never really sat down and talked about establishing standards. I'm not banging them on that, but it makes swapping mics on different wireless impossible with a few exceptions. Even within a single company the wireless mic wiring may differ.
If you haven't found a solution yet, try reaching out to Eric Toline, a friend of mine in Florida. He has G2 Sonys and has a lot of experience with the wiring. firstname.lastname@example.org