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In Reply to: RE: To be honest posted by Triode_Kingdom on July 01, 2021 at 16:17:01
My mistake. I read what you wrote, but was focused on something else.
I'll save what you wrote, and the next time the VTA is on the bench (which may be a while), I'll try connecting the output in pentode. You're right, I've got nothing to lose by trying it.
As always, thanks for your time and expertise, TK.
Follow Ups:
Well, I know what I said, but using EL34s and those output transformers in straight pentode mode is much more than just a last ditch effort. I want to be clear about this. It's exactly the way I'd go if not for the vintage iron I'm currently using up, and I'd do it with or without an actual ST-70 amplifier. Some of the replica Dynaco transformers on the market look very good, and I wouldn't hesitate for a second to build a straight pentode amp around them. If you ever get a chance to do this, I think you'll be pleasantly surprised.
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Buy Chinese. Bury freedom.
Thank you for the suggestion. It's the first time I've had any enthusiasm for doing any work on the amp in quite a number of years.
My friend would email me, telling me all the things he'd been trying, to coax music out of his amp, to no avail, and I mentally kept pushing it further and further down my list of interesting projects. "Pleasantly surprised" would be nice.
Thanks again, TK!
We can walk through this while you're doing the work if you want. Offline is OK too. Just say the word.
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Buy Chinese. Bury freedom.
As I mentioned to you elsewhere, I have a PP 6BQ5 build which interests me more, but after that's done, I'll put the ST-70 on my list.
Thank you for the offer of help, that's greatly appreciated.
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