Quote Originally Posted by Toppsy View Post
Different midbass drivers, later version of the pseudo ribbon tweeter, new OX, changed port tuning, cabinet redesign to accommodate slighter larger frame size of the new 6 1/2" midbase drivers. Want me to go on? Basically a totally redesigned speaker but to maintain to as best we could the sound and presence of the originals as possible.
Oh, a fair bit then. I haven't read much about them other than the opinion pieces on AoS so wondered if it was a case of different drivers etc.

Thanks.