Glad to see you posting videos. My question would be how much dynamic impact is lost in the 200 to 700 hz range due to only having one BG 10 driver?
PS Audio, trying to duplicate Arnie Nudell's statement speaker uses the BG 10 but has a 7" servo controlled driver to cover this range as they feel it's the heart of the musical range. So in their opinion the BG 10 does not have the movement of air to handle power passages. I would tend to agree with that. You do give up some transparency and perhaps coherance, but...
I've done a lot of development in this area of where to bring in servo control and where not to. Brian Ding came up once with a two way monitor equipped with 5" woofers that had servo control. It was an MTM design. I designed a passive filter for it that allowed us to switch between all passive filter driven by my big tube amps or passive filter only on the tweeter (driven by my tube amps) and servo control on the woofers.
The comparison was very telling. With servo control on the woofers the bass was far and away better than uncontrolled drivers. It was tighter, cleaner, puncher and extended lower. However, from 200Hz and up the plate amp sucked compared to the tube amp. The mid-range was blah, and not musical at all using the servo amp. The tube amps opened everything up and was musical. Vocals were lush and real. The speakers became beautiful to listen to.
So the critical area to cross over to servo woofers was 200Hz or lower. Higher up got into the mid-range and caused issues. And you never want to split the mid-range up into dissimilar drivers. That is a bad place for a phase shift too.
And as for this design (the Super Mini), the Neo 10 easily handles ranges down to 200Hz. They give up nothing playing down into those ranges even at really high SPL levels the whole system maintains a super accurate response.