Build a Microphone from an Old Telephone

[RCline]

First post on the forum. I've been a lurker for a while and have reaped the benefits. So I'll give back a little schematic I drew up. I'm far from a pro at recording/electronics, so let me know if there are any problems with the way I have this set up. Primarily using a 9 volt.

http://www.cline-company.com/blog/?p=33