Took me by surprise. Scanspeak just used their flagship tech on a large-format woofer. The motor design looks funky, as does the frame and fancy elliptical voice coil and former, but in a post-Purifi world (super-optimised surround, complex voice coil winding) it does tend to make me wonder if that is enough. Keep in mind that the Purifi is not as much of a value proposition as it seems on first blush because the Purifi passive radiator is almost compulsory with the PTT6.5. Add that cost and we are well into Accuton/Illuminator/Ellipticor territory.