Does someone has a schematic for the Zeppelin Percolator ?

[vintagekiki]

Plate dissipation of the pentode is 5W ( assuming to use 4.5W max as to a conservative dissipation) so if Z = Va^2 / Pa
170V x 170V = 28,900
28,900 / 4.5W = 6,422 Ohm Load (not very far from the guessed 6K)

Also as same way I calculate transformer or determine the power when noname amp comes to repair.
The right solution is to measure the transmission ratio of original Zeppelin output transformer, and based on the measured data to design the transformer .
For assumption is that almost no one make or winding transformer, already will use any transformer which has near hand.
Maybe the right solution is a 6 kOhm transformer for 6V6 amps (Vibro)Champ, AC4 or some from old receivers.
After all, whatever transformer is used, the amplifier will work.

[Kagliostro]

Many Thanks Martin - Ian - Vintagekiki

I've some NOS SE OT (I think they were planned for radio use) rated for 6W that has a reflected impedance of around 6K - 7K (don't remember if with 4 or 8 ohm load) and my intention is to use one of those, I've also some other SE OT (used), guessing from weight they may be rated for 2.5 to 3W, but I think I'll use one rated for 6W as to have a better bandwidth

Franco