Back in around 1960 my father acquired a bare TV set (chassis with CRT, but no cabinet) that looked an awful lot like yours. The channel knob looks the same as I remember, as well as the rectifier tube atop the power transformer. This chassis had no audio amplifier, so my father ran a cable from the sound detector to his pair of monoblock audio amps. Which in turn drove some big speakers we had in the living room, which the TV chassis sat atop one of. Only thing was that the sound came out of the other of the stereo speaker pair, sitting about 8 feet away from the TV. As TV was in mono he only fired up one of the monoblocks, and we never bothered or get around to swapping the speaker/amp connections to make the TV sound come out in the speaker just under the TV...
It's long gone, as well as any schematics too...
