We made a site providing specs on Neumann/Gefell capsules.
Also rare microphoneschematics can be found here(requestable throught mail).
And tips on small repairs......
Reribboning your mikes......
Share tips with other users......
Sell/Trade/Ask tubes as for example AC-701(k) and VF-14.....
Sell/Trade/Ask tubegear in our forum......

Let me know your comments, tips and contributions.....

http://www15.brinkster.com/audioray/

Cheers