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RE: schematic

"Circlotron cathode coupled OPT usually (and strictly ) need special ``split bobbin``coil configuration for EI typ of OPT to obtain the best Audio (electrical transfer) performance ."

I don't understand why a split bobbin would be needed.

I would think the best OPT for this would be a high nickel, parafeed (no gap) single ended transformer.

The only reason, I can see, to run into A2 would be to get more power.

I have 96db speakers and don't play that loud so power is not an issue.

Thanks for the link.

Stephens Trusonic had an OTL amp way back. They built a 500 ohm speaker for it.

The problem is a 500 ohm VC gets heavy.

Tre'

Have Fun and Enjoy the Music
"Still Working the Problem"


Edits: 08/20/11
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