View Single Post
Old 3rd Jan 2012, 12:58 am   #17
glowinganode
Octode
 
glowinganode's Avatar
 
Join Date: Apr 2009
Location: Aylesbury, Buckinghamshire, UK.
Posts: 1,522
Default Re: AKG C60 valve mic

Quote:
Originally Posted by mrmagnetophon View Post
Would anyone object to using this schematic? I built a new power supply for my mic, put the whole mic in a metal case, properly shielded and grounded it, and still had the problem.
I think it's best to try a new schematic.

-Chris
Hi Chris,
you seem to be missing a cathode bias resistor, or is it a zero bias triode?
That other circuit is an interesting design, one way of getting the maximum possible gain.
Rob.
__________________
We have done so much, for so long, with so little, we are now qualified to do anything with nothing.
glowinganode is offline