Wanted, electret microphone

John Smith wrote:
In article NBmsk.718$lf2.305@trnddc07, "Mike"
wrote:

wrote in message
...
On Aug 23, 12:46 pm, noname wrote:
The microphone in my old headset went TU and need a replacement.
Anybody have a working one they would like to part with?

Thanks

Dave
You could probably fix it with the electret mike from a
cheap telephone (not an old carbon-mike phone). I built a headset once
and used the mike from a $3 corded phone, no preamp or anything, and
it worked OK. Had to put a small capacitor across it to bleed off some
of the high freqencies. The mike itself was maybe 3/8" diameter, about
the same thick, and fit nicely into a holder carved of wood.

Dan
That sounds like a lot of work to develop something that's going to be less
effective than a replacement, but I can't say I'm innocent of spending way
too many man-hours trying to save a few bucks. The problem with using one
from a telephone is I don't think the impedence matches up and most aviation
mics have some type of noise cancelling circuitry.

What makes you think the impedence of the ones in the telephones are
different from the ones in your headset?

I'd rather not cobble something up if I can help it. I was just looking
for somebody with an old headset with a workable microphone that still
works.



Dave

In article ,
Dave wrote:

John Smith wrote:
In article NBmsk.718$lf2.305@trnddc07, "Mike"
wrote:

wrote in message
...
On Aug 23, 12:46 pm, noname wrote:
The microphone in my old headset went TU and need a replacement.
Anybody have a working one they would like to part with?

Thanks

Dave
You could probably fix it with the electret mike from a
cheap telephone (not an old carbon-mike phone). I built a headset once
and used the mike from a $3 corded phone, no preamp or anything, and
it worked OK. Had to put a small capacitor across it to bleed off some
of the high freqencies. The mike itself was maybe 3/8" diameter, about
the same thick, and fit nicely into a holder carved of wood.

Dan
That sounds like a lot of work to develop something that's going to be
less
effective than a replacement, but I can't say I'm innocent of spending way
too many man-hours trying to save a few bucks. The problem with using one
from a telephone is I don't think the impedence matches up and most
aviation
mics have some type of noise cancelling circuitry.

What makes you think the impedence of the ones in the telephones are
different from the ones in your headset?

I'd rather not cobble something up if I can help it. I was just looking
for somebody with an old headset with a workable microphone that still
works.



Dave

If it is a David Clark, they will replace for free at fly-ins, where DC
has a rep.

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Remove _'s from email address to talk to me.

In article ,
Orval Fairbairn wrote:

If it is a David Clark, they will replace for free at fly-ins, where DC
has a rep.

Really? Even if it's really old?

I now have two out of four of my headsets with dead mics, and it's very
annoying.

--
-Ed Falk,
http://thespamdiaries.blogspot.com/

"Edward A. Falk" wrote in message
...
In article
,
Orval Fairbairn wrote:

If it is a David Clark, they will replace for free at fly-ins, where DC
has a rep.

Really? Even if it's really old?

I now have two out of four of my headsets with dead mics, and it's very
annoying.

I'm not so sure they still do. At one time a dealer could send your headset
back to DC and they would fix pretty much anything for free. My dealer
informs me this is no longer the case although they might still make minor
repairs for free. I've never tried having one serviced during a fly-in, so
that's certainly worth a try if you can find a rep out in the field.

"Mike" writes:


I'm not so sure they still do. At one time a dealer could send your headset
back to DC and they would fix pretty much anything for free. My dealer
informs me this is no longer the case although they might still make minor
repairs for free. I've never tried having one serviced during a fly-in, so
that's certainly worth a try if you can find a rep out in the field.

They did this to a friend's at Sun & Fun circa 2000.


--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

"David Lesher" wrote in message
...
"Mike" writes:


I'm not so sure they still do. At one time a dealer could send your
headset
back to DC and they would fix pretty much anything for free. My dealer
informs me this is no longer the case although they might still make minor
repairs for free. I've never tried having one serviced during a fly-in,
so
that's certainly worth a try if you can find a rep out in the field.

They did this to a friend's at Sun & Fun circa 2000.

I had a DC repaired around the same time. Used to be you could send them a
frazled hunk of crap with a DC logo on the side and they would send you back
a fully overhauled headset with new ear pads and a new mic cover. It was
just last year my dealer was telling me the only company still doing major
out of warranty repairs for free was Lightspeed. Perhaps she was just
blowing smoke and was trying to sell me Lightspeed, I don't know, but she is
also a DC dealer so I don't know why she would.

It would be interesting to see if anyone has had a DC repaired for free
lately and what those repairs were.