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In Reply to: RE: Best sounding amp I own - I Second that posted by cpbajan on October 17, 2011 at 09:18:16
The UTC transformer is rated 150mA, but only supplies 61mA according to the schematic. That opens up a lot of other transformers, such as the PGP8.1 that Mike makes. The only question is whether the HV supply can be raised 300 volts.
A BCP-15 gapped for 40mA would handle the 27.5mA of the 6V6 easily, and give 50 henries for better bass.
If the PGP8 can take the voltage offset, you could do the whole power supply with the one transformer, by using 1200-v Schottky diodes instead of the tube rectifier. It would no longer be the real Komuru design, but would be easier to build and probably sound very similar.
Just another idea...
Follow Ups:
Please correct me if I'm wrong... it has been known to happen!!
Cheers
FM
Haha! Well, I don't imagine Mike has lost the drawings ... :^)
Mike has some really nice power transformers in his archives, but his time is limited, and I for one feel that time is best spent on iron that handles audio signals. It just makes more difference there. Lots of people make decent transformers, and a decent power transformer is good enough to make beautiful music. Damn few make excellent audio transformers, and excellent is audibly better then pretty darn good - which is not all that common either. Excellent beats the crap out of decent in audio iron.
Just my opinion, of course.
thanks for the response. It gives me something to think about.
PJ wrote:
"A BCP-15 gapped for 40mA would handle the 27.5mA of the 6V6 easily, and give 50 henries for better bass."
And I could airgap it for 30 madc and get > 50 henries of L.
MSL
Builder of MagneQuest & Peerless transformers since 1989
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