Well it is indeed odd as the other microphones I have are in fact AC coupled
and thus do not need this as you say. I'll have to await some sighted help
to ascertain what is going on.
Brian

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Brian Gaff....Note, this account does not accept Bcc: email.
graphics are great, but the blind can't hear them
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"David Looser" wrote in message
...
"Brian Gaff" wrote in message
...

No I said it has a battery. This is the powe it needs. There is no power
from the mixer at all, simply a resistor from the end of the input
electrolytic to ground, though I think its not a small one.


If the battery is connected between the drain of the FET and the cable
inner then the signal would be developed across a resistor connected
between the cable inner and ground. Normally I would expect that resistor
to be included in the mic, but if these mics didn't have that and the
resistor in the mixer were isolated via the bass-cut capacitor then
there'd be no DC path and the mic wouldn't work.

David.