Seems very similar in concept to Mowry's Steallus....let the coil ride in the magnetic field of the magnets themselves with no "gap", though I don't know if he implemented the "active" breaking concept. What happens as the coil moves....is it going to "pull" the flux with it since there's no gap? Either way, great idea. I had mentioned before that shallow mount higher excursion, linear BL designs are a hot commodity right now....the SI BM's seem to sell out quickly and since they aren't in production sell used for more than they went for new. All I ask is you keep parameters in-line with something that performs well IB in a vehicle, and that you hopefully make a 15" driver Any chance the 10" would play enough to function as a midbass? Or an 8" implementation?