Roger Preston wrote:
>
> > From: "J. Coon" <[EMAIL PROTECTED]>
> If you want to try your hand at building one
> > for about $10 US you ca try this one
> > http://www.tir.com/~liteways/Mandolin.html#Microphone
>
> I have followed the gist of the above and bought two microphone inserts
> and a right angle plug from the UK based Maplin Radio. I used the cable
> from a broken pair of headphones to connect from the inserts into the
> plug - soldering wasn't too difficult once I'd stuck the insert into a
> lump of bluetack to hold it. The result looks a bit amateurish but works
> well. Only snag is that one insert has less gain (or the Sharp MD-MT16
> has a weaker channel) - will buy another insert to establish which.
> Proper microphones in the UK seem (to me anyway) to be a bit sparse. Any
> UK based people advise me otherwise?
To avoid having to solder the plug to the cable, I used a cheap set of
ear buds. You could also use an old set of headphones. THe object was
to cut down on the amount of soldering required of the person making the
mike. Poor solder connections can cause problems with static, noise, and
low microphone gain.
If the mike elements you purchased have short leads, it is possible to
overheat them causing damage to the element. That is probably why one
of yours is weaker than the other. You have to get the soldered
connection hot enough to melt the solder and flow nicely on the terminal
without overheating the capsule. With long leads this isn't too hard.
WIth short leads, you may have to hold the lead with a pair of forceps
between the solder connection and the capsule, to act as a heat sink
while (or is is whilst? I can never get that right.) you solder the
wires. be sure the terminal that is connected to the shell of the mike
element is the one that is connected to the sleeve of the miniplug, and
the shield of the wire you are using.
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