Hmm, it seems I didn't research the right places. From your past posts Spritzer, you have worked with the LL1630 and 1627. There is a guy on HF that had good luck with the Z565.
I'm still fuzzy on the math with this but I have a couple of sets of PP trannies on the shelf. Not sure on the turn ratio for either of them though. From my weak understanding, these are wired in reverse? So this would mean positive to (4/8/16 Ohm) tap, neg to neg (amp inputs), and on the other end, the split phases to the Stax plug. What do you do with the B+ center tap? I'm assuming this will go to your bias board? In the case of a transformer with dual phase inputs (for pentodes), do you tie them together at the stax plug?
Is there any other safety built into the transformer circuit or is it directly wired from speaker post-transformer-stax plug?
Here is what I've got on hand:
AS-250 (Magnequest version of the Acrosound TO-250), ultralinear, 5k, 4/8/16 Ohm taps http://www.clarisonus.com/Archives/Trans/Acro55.pdf
Heathkit 51-29, ultralinear, 8k, 4/8/16 Ohm taps
I forgot to ask, along with those boards would you have a couple of Stax pro plugs you could part with also?