Hello, I have a woofer from a set of diamond 8.3 Wharfedale speaker. The woofer sounds like the coild is rubbing and emits a scratching sound. Looking for possible repir solution and the model no. for the 6.5 inch Kevlar speaker. I have already re soldered the wire connection for both points of the woofer. Colin MacDonald

Hello
The voice coil of your speaker is scratching with its magenet body inside. It can't be repaired. Whatever we do will go in vein. there is no possibility other than replacing this speaker. Some people will recone it, but qulaity cannot be assured. it will sound; but with respect to the other speaker, it won't match. Coil position, resistance, number of turns per unit length ete are determining the magnetic strenth of the coil, and therby sound. Wharfedale eill have its secret, and they wont give it out, as they have gained it with tremndous reserch.
So in my opinion, it will be best for you to replace the damaged speaker with and other one of same type and number. All details will be printed on its body. Buy the original one. Do not compromise. Woofers are the heart of any sound system. Keep this in mind. OK.