DeathRex wrote:A lot of schematics.
http://translate.google.com/translate?h ... 809-J.html
And some beautiful builds.
Warning NSFW, amplifier porn.
DeathRex wrote:These power SE amps are like stepping into a whole new world. Too many configurations and too many tube choices. I gotta build more than one.
I'm thinking of starting with a 811a driven by a 6L6. Then Gregg's 845, but with either a Chinese 845, GM-70, 813, or 838. Then maybe George's Tubelab SE. I gotta get a selection of tubes.
Are Edcor's CXSE OK with 1000 volts? What can they go up to?
What are some good 845s, GM70s or such?
DeathRex wrote:Are Edcor's CXSE OK with 1000 volts? What can they go up to?
kheper wrote:
From Michimori's website. He goes into detail on building the SE 811a:
http://www6.plala.or.jp/Michi/renewal81 ... l811A.html
DeathRex wrote:How big of a power transformer will I need? I'm thinking a 250-0-250 to 280-0-280 used as doubler, with the center voltage being used for the first AF amp and the driver, and in stereo.
DeathRex wrote:Yea, it says he only needs 132ma, maybe 300ma was the only size he could find.
DeathRex wrote:Yea, it says he only needs 132ma, maybe 300ma was the only size he could find. So if I need 160 ma @ 550 (80 ma X 550 + losses = ~42 watts), and 60ma @ 275VDC (center tap of doubler), could the minimum current of a 250-0-250 transformer be 380ma? (160ma X 2 + 60ma?)
DeathRex wrote:I found on number 221 he used a 150ma xformer for monoblocks, and he said 300ma was for stereo. Now I have to find one or 2.
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