Scott Dorsey wrote:
Rob Reedijk wrote:
Agent 86 wrote:
On Wed, 07 Sep 2005 17:14:59 -0400, danger wrote:

Sorry I have about 15from 44a and 77a up and have never blown one please
explain to me how the dc is going to fly over the transformer windings.

Short answer: It takes a few milliseconds to rise from 0V
to +48V. The tranny won't recognize it as DC until it gets to +48 and
STAYS THERE. Meanwhile, your potentially very cool microphone has become
a paperweight.

I am going to get into touch with Doug Walker and see what he has to
say about this issue.

He'll tell you to lift the center tap on those few RCA mikes that have
them, and stop worrying so much.

Hey! I AM NOT the one who was worrying. I was one who was saying
it likely wasn't a problem!

In the meantime, it's the ribbon that gets cooked, right, not the
transformer? So in the end we are talking about a $100 mistake.
Not quite paperweight. Except mics like B&Os where the ribbons don't
exist anymore. (Actually I accidently phantom powered my B&O once
and nothing happened. But the mic was already connected so it
only would have been a factor if the output transformer was centre-
tapped.

Right, but a $100 mistake is still a lot of money for something silly
that could easily have been avoided. Especially if you're also out
of use of your favorite mike for a couple weeks while it's being fixed.
--scott

True. But I was just pointing out that this is not catastrophic.
It is a survivable error. In fact, I was saying, "stop worrying
so much!"

Rob R.