11-28-2018, 04:37 PM
Not hum. More like a pop/buzz at low frequencies. Just got me thinking my 660L had a arcing 42 socket between pin 1 and 2 (heater to plate). Will look for carbon traces on socket. I could plug this spkr into the 660 and see what happens.
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