I'm going to re-do the tops boxes to try and fill a gap in the output iun the lower mid range - that's why I'm only posting plans for the subs at the moment, because they work fine.
Maybe the new design can allow an alternative 2" CD to be used - if it's not 2-in-1 then a separate supertweeter will need to be added, the Eminence APTs are good for that.
I was impressed with the bass end. Something missing above 8k though, was there a comp/tweet in there?
The compression driver has two diaphragms, mid and high. The high one runs 6K upwards and as far as I know that was all working properly. We were adjusting the settings quite a lot during the demos, and there may have been EQ or rolloff upstream in the source components (at one point I was using an iPod nano, not exactly audiophile kit).