Yesterday, 01:18 AM
Antique Electronic supply has filter chokes, and output transformers, as do some of the suppliers like Mouser, or Digi Key, the latter two usually being Hammond chokes. Then there is fleabay, but it's hit and miss. I think I would keep the original speaker, sometimes the field coils can be repaired, or rewound.
Regards
Arran
Regards
Arran