Stereophile analyzed/measured one of their upper end speakers a while back. Overall, the measured behaviour was superb. Cabinet resonance is extremely low. Off axis response is good. Energy decay for the drivers/crossover was excellent. Diffraction is pretty much absent here, as the cabinets use large, smooth radiuses/shapes to smoothly transition acoustic pressure waves off the edges of the cabinet. The only issue is that the crossover transition from the woofer to mid-bass had a rather noticeable dip as opposed to a flat transition. This indicates they tried to save money by not using the appropriate impedance correction filters (which would be very expensive due to the very low frequency cross over point). Other than this fault, they appear to be great quality speakers.
-Chris
