Ampeg SVT 3 PRO bias adjust

another version of the bias adjust

[@GScott50]

I had one of these. I replaced the trim pot with a multi-turn unit which made it much easier to set the bias! Also the bias current varied quite a bit from one transistor to another, so I made sure that the 'hottest' one wasn't running too hot.

[@Fishtank186k]

Do you have a speaker (load) connected? And do you have the Master Volume all the way down?

[@clintronicsrva]

no load needed and it doesnt hurt to turn volumes down

[@DanStelluto]

Thanks for posting. Would you say that this amp is built well? I’m interested in getting one but I’ve read some concerning reviews.

[@clintronicsrva]

Id have to say its OK, I seldom see one that burned up badly. Usually minor stuff.