You should try Van L speaker works http://www.vanlspeakerworks.com/repairs.htm. They are on the northside of chicago on Western ave.I had him do some speakers a numbers ago he did a very nice job.Warning He also is a speaker builder and will likely pitch you his designs.
Need help with woofers
I have carver ameizing platinum MARK IV and two of woofers are bad now so I should replace or re foam but nothing wrong electronically and any shop in Chicago area or burbs and here is my mail please feel free to contact me [email protected] or if you know out of state shop the repair or sale same woofer please give me the info THANKS