Now it is 2015. Kii Audio
use HighEnd Munich to roll out their active Three speaker in an off-site mastering studio launch party. I already made noise about these as my top find of the show both for John Darko's site in my KIH #22
column; and in these pages with sighting bits here
There's more even if details remain sketchy and conjecture. Look at the very basic block diagram at left. You'll surely spot the voltage and current loops between driver and what's called motion control. Infinity and today's Genesis would probably call it a servo. Velodyne subwoofers exploit an accelerometer on their cones to compare woofer behaviour to input signal for on-the-fly auto correction.
With Kii Three author/auteur Bruno Putzeys having famously worked for Dutch giant Philips who made him develop what became UcD only to fail to recognize its promise and future impact, thus leading the man to what became Hypex and subsequently Mola-Mola... it's convenient to make a genetic connection between their motional feedback
from 1976 and Bruno's motion control
of today. With technological progress in the intervening years particularly on the DSP side of things, one of course expects rather a new chapter on the basic idea, particularly since nCore already includes the driver in its feedback loop.