Thanks for the plug Sergei. :) The preamp is LNprimer in my Files directory. You can also power the EM172 from the 9V battery but use a 10k resistor instead ofricardo_lee
I think there is a pretty good Ricardo's circuit around here. Hopefully Ricardo will kick in and give the exact pointer. --Sergei. From: "Jerry Lee Marcelsergstesh
What you need is called a microphone preamplifier. A very important factor is that sounds have a large variation of amplitude; in order to take this intojerrylee.marcel
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