I assume that the whole cone thing is quite simple : basics speakers create signals by moving purely on currents flowing and creating magnets to move (cones) , a mic does the opposite , it pics up the moving air from the speaker and turns it into an electrical current again. The maestro found a way to capture that stage instead of the mics job ... I'd say goodbye full blown studio profiles and welcome direct/merged ones !
this makes sence , CK is a master of thinking out of the box , he looks at sounds instead of components ... true genius and the only one in the industry !
Raf