This may or may not save someone some problems in the future. Most of you real engineers probably already know about this.
In an over-zealous moment of motivation, I decided now was the time to replace the ugly gray wire someone used in a DIY Tuchel to XLR adapter. The microphones in question are a pair of oddball little German omni dynamics from the sixties.
Thankfully I found a pdf manual for these now discontinued mics and as it turns out, I would have wired them up bass acwards. If I hadn't seen the wiring diagram in the manual, I never would have considered that the Tuchel/ DIN socket in the mic body might be wired differently than any other mic. In fact, its wired with pin #1 hi, pin #2 ground, and pin #3 lo.
If you run across any old mics that use this connector, be sure to check it out before you turn on the soldering iron, or think the mic is dead.
And that's what I learned today.
Dean Giamette