Freed Eisemann Model PS-1(?!) -- schematic

[mhardy6647]

I have a weird pair of amplifiers (?) visiting my house. I thought I knew what I was getting myself into... but I don't!


DSC_6928 (2) by Mark Hardy, on Flickr

I was thinking PP 6L6, and someone had (apparently) added an RCA jack input and a pair of 5-way binding posts for output. They come to life just fine, but pass extremely little signal.

Then there's the tube complement. 2 5U4, 2 6L6 and one 6J5(?!).

I am not finding much.
One tantalizing thread and one old auction listing make it fairly evident that these used field coil drivers, which might explain the issue(?).

https://www.antiqueradios.com/forums...?f=13&t=220408

So, one 5U4 for HV and one for a FC supply, maybe?

And then there's that 6J5. One triode, and two 6L6s? I mean... that won't fly for a PP amplifier, and it's hard for me to conceive that this is a single-ended, parallel 6L6 amp!?!

It's not just a regulated P/S, is it?!?

Any of youse guyses know anything about this (these)?

Anybody got a schematic?

Man, I feel so dumb...