There is also Frank and Tom, at the CLC, which is the 'Canadian Loudspeaker Corp'. They are down town as well, relatively speaking. By car, about 10-15 minutes from George. George is a terrific guy, BTW.
Frank and Tom (Tom Irons) are busy guys. Call first and they may be able to point you to the exact correct guy, if they can't do it. To clarify: They manufacture and design loudspeaker drivers.