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1. [Amps] Power from a pair of 4CX150/4CX250 tubes (score: 1): Author: Donald Fox via Amps <amps@contesting.com>; Date: Sat, 27 Dec 2014 20:04:01 -0800; In the 80's, I ran a homebrew (not by me) pair of 4CX250 tubes on 6. As Carl says, screen and bias regulation were important. Using good old VR tubes for screen regulation, I believe it ran 300 volts; /archives//html/Amps/2014-12/msg00116.html (7,388 bytes)

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