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In Reply to: This sounds like a variation of the QUAD "current dumping" amp topology posted by Steve O on March 31, 2022 at 10:41:06:
Peter Walker must have been born on another planet. I have Quad 57's and a current dumping amp for the quads as well as a few different amps.I remember something like the low power amp is class A driving 2 class C amps, one + the other - , and the waveform put together to then drive the speaker. That's a lousy explanation and I forget how it's done exactly but it sounds quite good. If I also remember correctly, he also invented tertiary windings on output transformers that was later used by McIntosh but received no credit for that.
I once mailed Quad across the pond for help restoring my Uncle's 1957 57's and he personally mailed me guidance and original picture manual of the Quads and how to update them. Back then at 21 Y.O. I didn't recognize the significance of that, what can I say.
edit - I was wrong, it's 2 class B sections not class C
Edits: 04/03/22
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Follow Ups
- current dumping - Story 12:07:56 03/31/22 (3)
- FWIW etc - Steve O 20:39:23 03/31/22 (2)
- Bet that sounded great! - Freo-1 07:36:22 04/01/22 (0)
- RE: FWIW etc - Story 07:03:06 04/01/22 (0)
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