07-29-2019, 02:59 PM
A more-complicated tone control has to involve an additional stage of gain, ( I've tried otherwise and ended up killing too much gain). You can find one on page 335 of RCA's 1956 vacuum tube manual, (http://www.nj7p.org/Manuals/PDFs/Tubes/R...8-1956.pdf).
But frankly, I wouldn't attempt such a modification in an older radio like that, and I am one NOT beyond modification! You'd have to find a place for an additional vacuum tube AND an additional potentiometer, not to mention all those resistors, caps and wiring.
I think MiketheDruid has the right idea, since you already have a place for a single tone control pot.
But frankly, I wouldn't attempt such a modification in an older radio like that, and I am one NOT beyond modification! You'd have to find a place for an additional vacuum tube AND an additional potentiometer, not to mention all those resistors, caps and wiring.
I think MiketheDruid has the right idea, since you already have a place for a single tone control pot.
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