[K7Sparky]

Interesting problem and innovative solution.

Glad to get a look at the construction with the felt dust cover off. Or maybe it doesn't have one.

The spider looks a lot like a 45 RPM adapter for single play.

Not at all surprised the old cone crumbled and darn nice of him to toss in a cone.

Anyone have detailed pictures of a dissembled speaker of this construction.

I can't believe I didn't pull one apart as a kid. One of the few things just ignored / escaped. When a speaker failed I remember just adding a filter choke and going with a PM - usually a 6X9 from a wrecked car in a junk yard. Note that the filter choke might have been the filament winding of an old transformer. Test: does it hum ? Yes = bigger transformer / different winding No= got it OK. Interesting to note we repair things now to achieve originality, not just to work OK. When they were just old, still serviceable and plenty were around we "updated" them. No point I am trying to make, just an observation. No real need to know, just curious.

I've done plenty of current design speakers. Large amps tend to blow speakers / it seems to me that woofs shed voice coils much too easily at "just moderate" volume.