>It's a funny filament arrangement, in that there is a 5 - 0 - 5 volt
>filament xfmr, with the two fils in series across it,
- - Not funny/unusual. The Henry 3KA and the Trio-Kenwood TL-922 use
this arrangement in a cathode-driven Class AB2 configuration..
>with the centre
>point of the two fils connected to the centre tap of the xfmr - thus
>(hopefully!)they act as two separated filaments each with their own
>windings and a common point. ...snip...
>
I agree that you do indeed have RF negative feedback. I do not agree
that grid current decreases distortion in any grid-driven configuration.
Rich---
R. L. Measures, 805-386-3734, AG6K
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