April 1, 2019 at 9:38 pm #11319
Rick, I was going to say the same thing. In fact I have done that with a speaker that was very bad, but the coil was still good so
I attached the coil in the chassis and used a permanent magnet speaker.
A word of caution Les,, The field coil should be the same ohms as the schematic calls for.
Dan in Calgary