Know this is old but just wanted to follow up here to say i did change to 7812 regulator. Lowered the noise floor of the preamp and sounds a lot better. But when i put in the 1k resistor for r46 it dropped the voltage to 5v. 220r put it right at 10v. Sounds fine. In case anyone else stumbles on this like I did I wanted to share.
I have changed a ton in this amp now. When i am 'done' i'll do a different post to try to cover everything.
What I am trying to do now - NFB loop so I can add a presence control. Keep getting screeching positive feedback even when i flipped the OT primary... Might give up on that one.
I have changed a ton in this amp now. When i am 'done' i'll do a different post to try to cover everything.
What I am trying to do now - NFB loop so I can add a presence control. Keep getting screeching positive feedback even when i flipped the OT primary... Might give up on that one.