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In Reply to: RE: LL1660/18mA 4.5:4 posted by SandroN on December 12, 2014 at 10:24:03
I agree that 4.5:4 is slightly preferable to 4:4.5. Wire it as the inverse of Alt S with the tube plate connected where the grid is in S and B+ to where ground is in S. So B+ goes where ground is and ground goes where B+.
Kevin Carter
K&K Audio
www.kandkaudio.com
Edits: 12/12/14Follow Ups:
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You should consider using 6N30s. I know they are ~5X more expensive but I never got more than 6 months out of 6N6Ps in my phono pre and lines stage. With 6N30s I'm getting more than 2 years of use. Plus 6N30 have more dynamic headroom and sound better to boot.
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