09-01-2021, 08:34 PM
On the back of the spkr there is a small metal cover attach w/2 1/4 hex screws. Remove them slide the cover out of the way and you see 3 solder lugs on the top of the opt. Two of the wires go directly to the field coil. Measure the resistance across these two connections. Should see abt 1140 ohms. If much higher fc is toast.
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
