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[Frankp]

Thank you guys.thanks fot your repley. With the english dictionary on my side i thank you for your advice. i will contact Great Plains for the problem.
Thanks!!

[Old Guy]

The best route is the most expensive- Great Plains can also recharge the magnet when they recone. this would be far and away the best choice but obviously requires shipping the speaker both ways.

Alternatively they can supply a recone kit, I believe, for you to have the job done locally.