Step one would be to contact Cambridge Soundworks. Their speakers come with a 10-year warranty. They used to have some of the best customer service around, so they may help you even if you are not the original owner.
Even if they will not replace the speaker, they should be able to tell you the type of driver that this older model speaker used. You can probably still find the exact driver around. I don't think that CSW uses exotic parts.
As you say though, replacing a driver may be more of a pain in the butt than just watching Ebay. Used MC-100's should be plentiful and inexpensive.
Jim
Even if they will not replace the speaker, they should be able to tell you the type of driver that this older model speaker used. You can probably still find the exact driver around. I don't think that CSW uses exotic parts.
As you say though, replacing a driver may be more of a pain in the butt than just watching Ebay. Used MC-100's should be plentiful and inexpensive.
Jim