On Upgrading my Sub to a velodyne 800R I passed on My old Kenwood SW900 to a friend. The twin speakers have now blown. We replaced one of the drives with a base speaker from Maplins however the drive casing is to large. We can modify the case to take one drive but there is not enough room for the second drive. As maplins do not have smaller drives I need to source 2 X 5 1/2" drives. Can anyone advise me where to obtain these speakers.