FreeSpace 51 replacement drivers
I would like to buy some replacement drivers for my FreeSpace 51 speakers. One driver has failed after 5 years.
The speakers do not get much use and the faulty driver is an electrical problem - the tinsel has corroded next to the speaker cone. My guess is that the paper cone has absorbed moisture over time and this has caused the copper of the lead-out wire ('tinsel') to fail where it goes through the cone. I therefore expect the next speaker of the pair to fail soon, and then the drivers in my other pair bought more recently.
The support section of the Bose website requires a serial number to allow me to continue. The speakers are part buried and so if there is a serial number on the base, it has long gone.
Where can I buy replacement drivers from? Why is this so difficult?!?