Roger Alan Modjeski (RAM) 1951 - 2019

@bdp24 and @ndevamp, I think Roger would be a bit miffed with both of you right now. He designed the "new" RM-10 circuit to be cathode bias, the correct term from his perspective versus self-bias.

As far a his equipment, schematics, and other company details Roger took care of all that. The details will be made public at an appropriate time, which is not now.

Yes well self bias is the generic term which can also be other forms of self bias as well as cathode bias, like grid self bias. So you’re right, it’s specifically cathode bias. Ok about the schematics. It might be best not to release them publicly as they can be misinterpreted and then erroneously be credited to Roger. Although some are already out there. But if he took care of it, it will be in good hands.
Anyway, Roger has departed! Still a bit in shock.

@clio09 did RAM direct a preference for donations in his memory ? I would certainly like to do that.
best
jim

As with all people I hold in especially high regard or are unusually important to me, I'm still trying to get used to the fact that Roger is no longer here. It's comforting to know there are others feeling the same way. Thank you @ndevamp, @clio09, and @tomic601. The last time I felt this much loss was when Richard Manuel could no longer take it, and did the unthinkable. That one still hurts.

I suppose that Roger's having lived in Santa Barbara had something to do with his prior history as a collaborator with Harold Beveridge, when HB was developing and building his direct-drive ESL speakers, also in Santa Barbara.  In any case, inside the chassis' of both of the amplifiers that drive my Beveridge 2SWs is inscribed "RAM 1979", in magic marker.  In recent years, RAM admitted to me that those were his marks.  He is also known to have designed the Beveridge preamplifier, of which he was most proud. From where I sit, he was a relatively young man, and he will be missed by all of us for the depth of his knowledge, his unique skillset, and his kindness to most all of us.
In my opinion, you're quite correct, bdp, a direct driven ESL cannot be beaten. The only set-up that comes close is an ESL driven by an OTL.