>Hello,
>
>A friend in a foreign land has Emailed me
>to say his home brew four 572b amplifier
>filament transformer failed.
>
>He's been able to locate a same size
>~25.5 volt CT transformer and would like
>to use it.
>
>The Kenwood TL-922 has a series
>connection heater, the drive divided from
>the tuned input with coupling caps.
>
>I'd like to read any or your opinions about
>trying to drive 4 directly heated cathodes
>(572b) connected in series?
** Why not go for it? A 922 has no detectable hum, so it just might
fly, Skipp.
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