I own Diapasons and live about 40 minutes from Shahinan. A few years back one of the woofer drivers blew from DC leakage. My Diapasons are the current larger version. Anyway, I brought the speaker to Shahinian and and his worker removed the driver. The current SEAS driver was just slightly different from the damaged driver and required a minor modification. In my case, I would have not been able to fit the new driver in w/o doing some woodwork first.