Hi Mark
Bill Orr has it listed at 215 ohms per tube so half that for a pair.
73, Paul
PAUL HEWITT
WD7S PRODUCTIONS
QRO HOMEBREW COMPONENTS
http://wd7s.home.att.net
> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com]On
> Behalf Of wb8jkr@juno.com
> Sent: Friday, October 10, 2003 1:35 PM
> To: amps@contesting.com
> Subject: [Amps] Driving Z of 572-b's
>
>
>
> I know all the variables etc, but can anyone give me
> the "approximate" cathode driving Z of a pair of 572-B's
> at full input? I'm thinking (guessing) about 100-120 ohms?
>
> Mark WB8JKR
>
>
>
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