Tom_munro,
Thiel measures driver diameter by the size of the cage, not the cone. I am sure the cone is no larger that 6.5". I wouldn't be concerned, the woofer cones on the 2.3 are less than 6" and it has the best bass I've ever heard from a cone so small.
Thiel measures driver diameter by the size of the cage, not the cone. I am sure the cone is no larger that 6.5". I wouldn't be concerned, the woofer cones on the 2.3 are less than 6" and it has the best bass I've ever heard from a cone so small.