Re: Of sound card and microphone matching...

Marc Lindahl (
Tue, 19 Mar 1996 22:57:50 -0400

>1)The mike input impedance on SounBlaster is generally 600 ohms.

> Can a Sound Card be modified to provide the DC needed ?
Yeah, if you get an electret mic element from radio shack, it shows how to
hook it up. You'd take +5 from the PC, thru maybe a 4.7K resistor to the
mic, and an electrolytic cap (maybe 10-100 microfarads, 16 volts or more)
with the plus side to the same side of the mic as the R, and the other side
to the soundblaster in. Then, the other side of the mic is to ground. (Marc Lindahl)
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