Mic tech tidbits

I was reading over on another forum and saw some interesting tidbits on mics. Thought some of you might be interested - its a short thread:
http://recforums.prosoundweb.com/index.php/m/2032/0#msg_2032

Yes, Klaus Heyne's microphone forum on PSW is a really good resource!

Jakob E.

Yeah, I've always heard great things about his mods to the AKG 414. Does anyone know what these mods are or have a schematic?
Kelley

I have one of those 414s. It sounds gorgeous. It also comes with lacquer or something over the screws and opening the case voids Klaus' warranty, so I'm not going in there anytime soon. It really sounds beautiful, though.

[quote author="jrmintz"]I have one of those 414s. It sounds gorgeous. It also comes with lacquer or something over the screws and opening the case voids Klaus' warranty, so I'm not going in there anytime soon. It really sounds beautiful, though.[/quote]

Seth,

What model # of 414 do you have?

It's a 414 EB with a CK12 capsule. It took me a long time to find one.

Thank you Seth.

[quote author="Plexibreath"]Yeah, I've always heard great things about his mods to the AKG 414. Does anyone know what these mods are or have a schematic?
Kelley[/quote]

Kelley,

There were quite a few versions of 414s and they had different schemas. You can find them on Jakob's site.

Klaus has posted some of his ideas about modding here:

http://recforums.prosoundweb.com/index.php/t/198/1759/?SQ=a7a5a4f2d601fb4cdae89f5aec0e5d39

Although it is about Neumann, I would think AKG in principle would be the same.

BTW, I did not quite understand what did he mean in the thread by 'global feedback' in U87? I looked at the scheamtics and did not find any. Could someone point it out?