On Sat, 1 Oct 2005 jpero at sympatico.ca wrote:
This is round 5/16" dia mic with felt screen
stuck over the small
opening.
Now mic working intermittently and had to tap even bang on it to
wake up.
What kind of mike is it?
I assumed from the description and use that it was an electret condenser
microphone.
Some types are prone to "carbon granule
clumping", and need to get shaken
up and beaten on occasionally.
An old joke in the UK was to convince the chap at the other end of a
phone conversation to sing loadly into the mouthpieces to free up the
carbon granules. Didn't do a darn thing, actually, but you could get
idiots to start singing.
One of my mad[1] friends is heavily into all sorts of old technology. I
was chatting to him on the 'phone one time, and his voice started to
become indistinct. I asked him to sing into the phone. He, of course,
knew the joke. I head a few bangs, and then everything was fine again.
He'd freed up the carbon granules in his microphone.
[1] Actually, all my freinds are mad...
-tony