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Sherwood S5000 tube replacement - 5751's?

Posted by PeterI (A) on December 20, 2006 at 20:18:46

Since selling my restored Eico HF81, I have been giving my Sherwood 5000 more attention. Addition of 4 Russian 6pi14pi gave the amp more punch than it had before (replaced aging original, but still okay-testing, USA Tung-sol 7189s). Now I'm wondering if rolling in some other tubes I have on hand in the place of the Telefunken 12ax7s might see some sonic differences. I have RCA 7025 and a couple 5751's.

My question is: There is a row of 5 12ax7's in the front - which one's are the phono section tubes? It's not clear from the blurry schematic I have. I should probably keep those as 12ax7's - I can't afford to lose gain there. The phono section is pretty good.

Thanks for any suggestions from Sherwoiod owners about tubes in an S5000 (have NOS RCA 7199's in those positions).

Pete

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