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K&K Audio / Lundahl Transformers Welcome! Need support, you got it. Or share youe ideas and experiences. |
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K&K Audio / Lundahl Transformers Welcome! Need support, you got it. Or share youe ideas and experiences. |
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In Reply to: Karna arrives! posted by Lynn Olson on September 10, 2004 at 16:57:55:
the key is good sources -> Dave Slagle Autoformer -> 3 stage amp. No two stage amp with active preamp comes close...IMHO.Hey listen, who did your power transformer? It seems to have dual CT secondaries.
With only a small input cap and a 40uF cap after the choke hows the ripple on the output stage?
And with all AC filaments, any noise on Gary's modified Heresys? I read in your write-up you wrote that if hum was an issue you would resort to DC, but I assume its a non-issue? BTW, have you tried it with your modified Chorus IIs?
I'm still working on my ideas for a PP design and would like to better understand you value/design choices.
After building my SE amp, I can't contemplate using under 100uf in the B+, or AC on the filaments, regardless of topology.
And building a separate chassis for the power supply is "de rigeur," but for a PP amp it means a four chassis design. Big, big, big...
Looks like a great group effort.
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Follow Ups
- Re: Nice work Lynn et al... - Jose R 13:16:30 09/11/04 (5)
- Comments ... - Lynn Olson 15:37:33 09/12/04 (4)
- Re: atachments coppied and pasted that I tried to send previously - George Louis 19:01:27 11/07/04 (0)
- Re: Lynn ... - Jose R 20:51:03 09/12/04 (2)
- SE and PP design differences - Lynn Olson 02:59:32 09/13/04 (1)
- Power supply layout - arend-jan 13:00:59 09/16/04 (0)
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