I marvel at the design of this speaker. And studying the way in which its constructed, $50k is practically a steal. Just the time spent clamping and gluing each piece of HDF, not to mention CNC Routers cost $50k on their own! Sure you could cut the holes by hand, but for the bass module that would require cutting atleast 50 perfectly aligned holes, per speaker!
For my own purposes, I took from this the fact that the inevitable volume control issues of the Beryllium tweeter could be offset by better distributing the load across all 5 drivers, instead of using resistors. Less expensive than using 2 mid woofers as opposed to 4, of course not, but where's the joy of turning amplification in to heat instead of spreading it across a much larger radiating surface!
What confuses me tho, is that you can tri amplify this speaker. How do you control the tweeter level if it can have its own circuit, separating it from the 4 mid woofers? Would it be as simple (or silly and utterly expensive) as having a lower powered amp just for the tweeter?