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RE: Screen Voltage - 6L6G/A/B & 6P3S-E ?

Posted by FenderLover on May 1, 2017 at 17:02:07

In Reply to: Screen Voltage - 6L6G/A/B & 6P3S-E ? posted by Triode_Kingdom on May 1, 2017 at 11:16:32:

I ran 1952 JAN Sylvania 6L6GA in a 1966 blackface Fender Twin Reverb. I dropped the voltage to the screen, from B+, using 1500-ohm wire-wound, 5-watt resistors. OEM resistors are 470-ohm.

Plate voltage was OEM. 450-460VDC. I adjusted the idle bias dissipation to around 12-13 watts per tube (about 65% max dissipation).

I did mod around 2000. AFAIK, that amp is still running strong. Owner has two matched quads of the Sylvania JAN-CHS GA's. I'll email him, to see which set his is on, now.

He plays Jazz gigs, at local bar. He really likes the tone of the GA over the GC. Better midrange. Lost of output is not an issue in smallish gigs. He is running 1965 vintage, reconed alnico Jensen P12N speakers.

One of the best Twins. I ever heard.

8^)

Edits: 05/01/17

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