David,

Thanks for adding to body of knowledge about the Oktava ML-52. The DIY
folks over at "The Lab" would probably love to hear about your
findings.

http://www.prodigy-pro.com/forum/vie...e40084c7 15a4

There are a couple of members who are very experienced with ribbon mic
design and practice. I think you'd find an interested community to
dialog with.

best, MJ