Alan,

(A) I just reread this thread . A couple of things stick out .

(i) It seems you have a DCX2496 available for biamping .

(ii) It also seems you have available another amp that you can commit to the HF circuit if you actually do biamp .

(iii) Your AS-101 have 8 ohm components loaded into them .

(B) Upon review ( for you to get more HF ) I would simply biamp these 101(s), using your available electronics ( & not buy any new drivers or diaphragms ) .

(i) Build up the HF portion of the midrange suppression circuit ( that I posted above ) , put it inline with the horn-driver , turn up the HF amp to make up for the lost sensitivity and then take a listen .

(ii) The new balance ( between mids & HF ) should be more to your liking .

(iii) This is cheaper & faster to do when compared to trying to integrate a tweeter ( & should sound better ).



PS ; Forget about those Ovation horn drivers ( they'll be dying by 8K for sure ) .

AS-101 Schematic