Bryston-like DIY-ish Active Speakers

[CKehoe]

Bryston's approach to active speakers seems to be wasteful and completely behind the times - big metal boxes with expensive heat sinking and A/D/A processing (meaning D/A/D/A for those of us who are primarily focused digitally stored music. However, the approach the preamp/crossover/amp combos outside of the speaker boxes offers great flexibility and opens up myriad potential upgrade paths.  One could start with a simple 2 or three way system, with a capable multichannel digital crossover/preamp, and over time, independently upgrade: 1) speakers ; 2) crossovers; 3) digital filters; 4) D/A conversion; 5) preamplification; and 6) amplification.  Of course, many of these functions might be combined (crossover + digital filters in and HQ player server, or Exasound 8 channel DAC straight to amplifiers, for example).  I am intrigued by the possibility of just such a sytem, but the interesting question to me is "what passive speakers" would I want to try this out on, i.e., who has a great box and great divers with an OK, not great crossover?

[CKehoe]

Looked at that, and the NCORE plate amps, but kind of don't want to build cabinets.

[CKehoe]

I'm thinking of maybe picking up some Vandersteens 2Ces or 3As as mules for this project.  I've had Vandy's before, and liked them, so I could use them normally untill I was ready to modify them. The drivers are supposed to be capable well beyond their crossover points, based on their use in 1st order crossovers. But they are 4 ways - meaning 8 channels of amplification!

[CKehoe]

My other thought is a set of KEF Q series towers, but I sort of like the idea of a sealed speaker for my test case.