Re: repairing an electret microphone
- From: Eeyore <rabbitsfriendsandrelations@xxxxxxxxxxx>
- Date: Thu, 09 Apr 2009 11:35:36 +0100
GregS wrote:
Peter <peasthope@xxxxxxx> wrote:
To replace a wire which broke in the swivel
of the boom, I reconstructed the boom of an
Altec Lansing headset. This included
resoldering the wires to the back of the
electret capsule. The speakers still work
but the mic does not after this repair.
Found a similar failure after soldering a
new electret onto the wires of an inexpensive
Creative/Telex desktop mic.
Is the electret mic particularly heat sensitive?
If so, what technique is recommended? Already
I was careful to apply minimal heating.
If your continuity is good, try another capsule. Try attaching small
wires first with speed. The only thing that could go wrong is melting
the flexible parts of the diaphram.
It's a job that needs a lowish power or thermostatically controlled iron ( or a fast hand ! ). As someone else
mentioned, the capsules are polarised.
Graham
.
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