Rebuilding of a rare Zenith 12" Electrodynamic Loudspeaker, Model 49-121AB for a Zenith 12-A-57 "Baby Stratosphere" console receiver.
How an Electrodynamic Loudspeaker Humbucking Coil is used to Mitigate Hum https://youtu.be/_AtZOcq6EqY
The playlist for the series:
https://www.youtube.com/playlist?list=PLjLu4V-71S1IEj8y6cA0sfgDZJnZ3BIQ0
Thanks for watching and subscribing to my channel on vintage radio repair and other related circuits.
#restoreoldradios