Originally Posted by jdg123
There is a related thread on this site about power supplies for 811 tubes. I知 not sure how to link to it. I知 getting urged to change to an interstage transformer from the coupling cap but I know a fellow (SET12 from AudioKarma) who built this way (slight variation of one extra choke and the called for 2uF instead of the 1uF I could afford) and his amp ran strong and true for years. I知 betting on experience over theory... unless someone has differing Experience with A2 power supplies. I invite alteration to my schematic to reflect that experience. Experience is a great teacher, I知 all for it! Otherwise, This set up is a proven performer... with diodes and coupling cap :-). I知 not defending it in theory I知 just saying it works!
Beautiful amps, congratulations on your builds!
I modified a Tubelab TSE to run SV811-10 and it worked and measured quite good for an SE amp, particularly considering my mediocre Hammond 125ESE OPT's.
Personally, on my experience, I think the mosfet power drive is the way to go with these tubes. I was getting 9 watts with an inadequate positive power supply, and feel like 15 to 20 watts is within reach with the right one.