when I turn the gain control up I get the "pufffittttt" noise like a dirty pot or DC on it... then if I turn it up again right away, it's gone. If I wait a bit... there it is again.
It is a CP type pot so I don't think it's dirt, plus it goes away and comes back as described.
I designed this thing my self borrowing from a lot of different designs... I probably borrowed an incomplete circuit? And somehow I am getting DC into my NFB?
http://i907.photobucket.com/albums/ac273/jwhmca/700MICPREB.jpg
It is a CP type pot so I don't think it's dirt, plus it goes away and comes back as described.
I designed this thing my self borrowing from a lot of different designs... I probably borrowed an incomplete circuit? And somehow I am getting DC into my NFB?
http://i907.photobucket.com/albums/ac273/jwhmca/700MICPREB.jpg