|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
74.37.227.139
In Reply to: mikeyb follow this link and you might learn something. posted by JLH on March 14, 2007 at 14:14:35:
The 'flywheel' supply (will we ever stop putting it in quotes?) that Henry described is not really what Jeff is pushing. Jeff is advocating low L and low C supplies in a general way, as a desirable approach on its own grounds. The supply that Henry described is a specific application that happens to include low L and low C, but also depends on a balance or 'tuning' (sorry, Henry) that needs to be there or the benefits (as identified by Henry) are lost entirely.To get to the point: it's possible that Jeff built a flywheel supply (no quotes!) but it's VERY unlikely. In fact, I found that I can't calculate the odds because my calculator has only 12 digits. Really, the odds that Jeff and Henry are (were) talking about the same thing is astronomically small. Not that either thing isn't interesting on its own, but they're still different things.
To really get to the point for real this time: Henry did not explain in engineering terms why Jeff likes his particular style power supply.
Follow Ups:
"Henry did not explain in engineering terms why Jeff likes his particular style power supply."Nor would he admit to it, even if he had! ;-)
__________________________________________________
Boo!
Wow, no one can replace Ivan303 !And to set the record straight, Jeff Medwin certainly didn't develop Low C, HY. DCR supplies, Dennis Fraker did so in his first Serious Stereo SE 2A3 amp, prototyped by him, way back in 1992 , and UNchanged since then ! And it certainly uses NO flywheels.
Jeff built that type of Low C, HY, DCR supply in February 2007, with Greg's 245 SE amp in Kansas City, and reported on the supply configuration and our listening results on-Forum, when it blew us both away !!
didn't it go back further than 92? --
Hi Fred,Well, in the 1980s, I can recall Dennis and Dr. Halijak PhD. EE were having custom made 1.0 HY @ 10 ohm chokes made.
I believe he finished his first S.S. SE 2A3 amp in 1992, but Freddie, that was still fifteen years ago.
This post is made possible by the generous support of people like you and our sponsors: