Great to hear some news about these speakers TDome!
That raises a few questions:
Why are you not using the 1500AL subs that came with the speakers?
Have you compared them to your synthesis SAM system side by side? (might be difficult I reckon, due to their integration and specific EQ for your media room...)
I am surprised that the horns are not the one seen in the original Greg Timbers and DIY thread. The ones you have looks like H4338.
Are you using the 045Be?