impedance measuring

[Neil Morrison]

Don't take them apart. That usually kills them. Hook up to a scope, and see
what output you get. Newer ones may be electret - they need 1.5 to 3 V bias
to work. Xtal mikes should output a high signal, dynamic a lower level, and
they will have a resistance value.

Regards,

Neil Morrison


----- Original Message -----
From: "Murray Grandy" <mgrandy at TELUS.NET>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Saturday, September 22, 2001 1:26 PM
Subject: impedance measuring


> I also meant to ask about microphones as well as speakers. I know there
are
> several types and the types determine if they are high or low etc but, I
> have several old mic's that are not marked in any way that I can see. I
can
> measure resistance with ohm meter, what is that telling me. Without taking
> them apart and trying to see just what they are, is there any other way to
> tell.
> Thanks for all the previous responses. Also, the A7 amp parts may be gone.
> Murray
>
>
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