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RE: Notice that both g1 AND g2 of the modulator are driven...

I did notice that as that's the way I did my stand alone 813 modulator.
Look at the Altec 260A amp. Notice the grid chokes in parallel with the 180k resistors.Notice the GNFB that feeds each tube of the same channel.I'm curios as to what the bandwidth is of what is probably an interstage trafo that is probably acting as a gain stage? I almost bought a pair of these but they were too heavy to move.

"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken

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