The 10" drivers are not exactly the same as the current models, I don't think. How they changed exactly I am not sure.So the speakers themselves are the same, but only the frontfiring one has the tweeter?
[ Edit - For clarification, I believe the front- and the down-firing 10s are the same. Just not the same as the current 10s. ]
Yes I am pretty sure only the front-firing driver has the coax tweeter.

