Yep, the electromagnetic speaker and your right, the filter caps which mean rebulding the cans.
Ultimate plans are to add this regulator:
https://glass-ware.stores.yahoo.net/ps3.html
I'm also collecting test equipment. e.g. AM/FM signal generator.
The main area has the selector for FM. It was optional and just like a separate FM tuner it would have it's own display. There were two versions of the FM tuner. One with the tubes inverted with respect to the dial, which this one needs and one non-inverted. I have a solid state tuner connected to it now.
Way back when, my father replaced the 78 turntable with a "more modern" one. He then put a small tube amp for the console to play stereo. At the time, we hid the extra speaker in the console of the TV.
When I was, I would guess, maybe 10, I worked on tube radios and TV's and I respected 300+ volts. It did take me a while to have the courage to disconnect the high voltage anode lead. So, for part of science project, I needed to construct a 3 KV supply. Work, got me to work on a highly regulated 15 KV at 1.5 Amps, shunt regulated by a TUBE. Then there was the 100 kV at 0.1 A X-ray tube supply and the 1000 W RF transmitter. The 15 kV supply was always failing before I got involved, so I fixed it for good. The 100 kV supply was noisy, so I rebuilt that too. Then there was the stupid lamp that needed 40 kV to start and operated at 40 A and 22 V. The OEM manufacturer put in a 10 A rectifier and they got an earful from me and fixed/upgraded for free.