Originally Posted by
Mr. Widget
You are a braver man than I.
This reminds me of the time I lived abroad and when the windshield wiper motor burned out in our car, we went to a repair shop and they rewound the motor. It never ran at exactly the same speed as before, but it worked. Ordering a replacement motor from the USA would have taken months and been quite costly.
I would be hesitant to even remove the diaphragm from a modern JBL compression driver as they are precisely assembled and tested for performance. I suppose you can give it a try. Replacing the ring may be your best option if replacing the driver is not an option.
Where is the copper ring?
Widget