Yep I have heard of these mics, for the price I would say they are worth a try. You could also make your own based on panasonic capsules.

Link, I know you have extensive electrical experience, in your opinion, would it be difficult to do?

I understand schematics pretty well, have soldered cables, and have a Radioshack in my town, I'm mostly just lacking the practical experience.

iamfrobs wrote: Link, I know you have extensive electrical experience, in your opinion, would it be difficult to do?

I understand schematics pretty well, have soldered cables, and have a Radioshack in my town, I'm mostly just lacking the practical experience.

Bit fiddly, but not difficult. I've done lots of them.

Here's some different info on building mics based on Panasonic capsules:
http://sound.westhost.com/project93.htm

As boswell said, "bit fiddly" but not hard.
Here is an excellent start:
mic" rel="nofollow">http://www.linkwitzlab.com/sys_test.htmmic
http://www.linkwitzlab.com/images/graphics/microph1.gif

He is making a flat mic for measurement but the ideas are all there. The thing to watch for is the internal FET often has too much gain, but you can modifiy this as shown in the links above. This modification is a bit tricky but can be done.

EDIT: Just noticed Boswell's ESP link also leads you to the Linkwitz site....