09-26-2020, 04:52 PM
Ok I give up what did it come out of??
Or is there a part # starting with a K or a S inked on it's frame?
The general answer is not so much. It needs to meet a few criteria. Low impedance output transformer to match the push pull triode output tubes (about 4000 ohm total). Needs to have a push pull output transformer. A speaker from a model 70 looks the same but has a single ended transformer. The field coil needs to have a fairly high dc resistance about 3100 ohms. Most of the later sets the field coils are lower around 1500 ohms.
Or is there a part # starting with a K or a S inked on it's frame?
The general answer is not so much. It needs to meet a few criteria. Low impedance output transformer to match the push pull triode output tubes (about 4000 ohm total). Needs to have a push pull output transformer. A speaker from a model 70 looks the same but has a single ended transformer. The field coil needs to have a fairly high dc resistance about 3100 ohms. Most of the later sets the field coils are lower around 1500 ohms.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
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