In Reply to: for me it was the 45 posted by Gordon Rankin on August 9, 2011 at 05:24:05:
which when I finished...I thought it was quite good, but when I measured the power it was half what I thought it should be...
This was a KT88 Triode PP driven by everyone's favorite tube 12AT7, Hammond 156c choke loaded....anyway I finally started to go through it, and found that OMG, I had only hooked up one side of the 12AT7 to the KT 88 grids...
So I was running one sided (SE)....so I hooked up the other side, had actual PP, double the power, and it sounded like #hit in comparison...
So I unhooked one of the grids, added a second Hammond 156c to the anode of the 12AT7, and never looked back....
I ran both the KT88's in each channel to balance the transformer, so it was a non air gapped SE design...running from a regulated tube supply....It had tremendous Solid Bass, huge soundstage, and sweet sound...
so I never built anything PP after for Hifi....I still build PP guitar amps, and have a new design ready to go out...
Anyway,
Peace,
-3db
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Follow Ups
- RE: for me it was the 45...yes for me it was making a KT88 PP - Minussss3db 03:51:35 09/07/11 (0)