Hello foz1982,
The only replacement drivers that will fit into your cabinets that also have the same driver specs has a manufacturers defect. They have been working to resolve this issue, but each sample they send us we can still detect a buzz at a certain frequency. Unfortunately I have to wait for them to fix this problem. Another option would be for you to send me your speakers and we could modify the cutouts to except new woofers. If you like, give me a call tomorrow and we can discuss options.
951-682-0706
