slightly ot: battery driven microphone

[Paul Perry]

At 08:50 PM 11/08/00 -0700, Aaron J. Grier wrote:

>The company I work for (Frye Electronics) makes electret microphones
>(the M1550E) for purposes of testing hearing aids.  

Do they make their own capsules, or do they get the capsules form
elsewhere & assemble into some structure?
I'm looking for asource of what are called 'large diaphgram' electret
capsules..

paul perry melbourne australlia