In Reply to: Question from the peanut gallery posted by Lew on August 9, 2012 at 14:31:18:
Hi Lew,Hell if I know anything my friend.
Yes, and you notice, my test is at 3 mA. with my usual 15% step, to 3.45 mA.
A stiff supply IS a low DCR supply. It seems from my listening experiments, that Pentode G2 is super critical. Walter Key got it right in the 1970s by using a totally separate G2 supply. Later attempts at the Paoli 60M, with a different E.E., used more and more regulation, and the amps died (Paoli S.O.B. etc.). Dennis Fraker and I have discussed this over the past two decades, and we believe a separate supply, a clean one, IS the very best way to do G2.
What ever I did to improve the G2 supply, seemed to lock-in the amp's music making ability, just as much, (actually - perhaps more), than as if I was using 10 Ohm power trannies on the B+.
Honestly, it blew my mind how wonderfully the amp responded, on the speaker load (Fulton Premieres, P-12s), to my G2 power supply improvements.
I don't know all the theory, but that didn't hinder me from getting decent results !! I listened a LOT !! Tried a LOT of configurations, I had a LOT of fun doing that.
Jeff Medwin
Edits: 08/09/12
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- RE: Question from the peanut gallery - drlowmu 14:57:16 08/09/12 (6)
- RE: Question from the peanut gallery - Lew 20:14:56 08/09/12 (5)
- RE: Question from the peanut gallery - drlowmu 21:20:14 08/09/12 (4)
- Mel Schilling... - Lew 06:48:06 08/10/12 (3)
- RE: Mel Schilling... - drlowmu 07:07:17 08/10/12 (2)
- RE: Mel Schilling... - Lew 08:03:18 08/10/12 (1)
- RE: Mel Schilling... - drlowmu 08:44:58 08/10/12 (0)