Emerson 415 radio low volume.

[old_coot88]

Does the speaker use a field coil, or permanent magnet?

[dieseljeep]

Originally Posted by old_coot88

Does the speaker use a field coil, or permanent magnet?

The thing uses a permanent magnet speaker, referred to as a magnetic speaker, such as the early RCA "tapestry" speaker. Farm radios generally used them, even Zenith. It doesn't use an output transformer.
It's best to see schematic. It has a choke in power supply.

[fumplet]

Originally Posted by old_coot88

Does the speaker use a field coil, or permanent magnet?

It has a horse shoe magnet or at least i think it is a magnet. and only one coil. I think the b+ goes through it. There is a single rod attatched to the cone sandwiched between inner and outer cone shaped washer. This rod goes to I think a flat piece of metal that sits inside this coil. This rod from the speaker is rather small about the thickness of a 32nd. I dont know if I should attempt to remove or dissassemble this speaker yet. Should just post a photo but not sure how to do that yet either.
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