Castles have a very good reputation, and because they had a cabinetry factory, their cabinets are often a step up from the alternatives-- all, or almost all, have real wood veneer. But because they also made most of their own drivers, you may have a very hard time finding a correct replacement. I don't know the model so don't know if, in fact, this is an issue with them, but I would suggest thinking hard about it before making a not negligible investment -- its not a huge amount of money, but it could buy you other very nice speakers.