From a simplistic view, I might ask: if a single driver speaker system is -40db down at 25Hz, could that be considered musically acurate? While it is clear that many trade offs are made using cross-overs, such as the current being out of phase 90 deg. This fact creates a strong argument for electrostatics. Please don't hammer me if my "numbers" are not factual, I am simply trying to present a point.
Cheers, Paul
Cheers, Paul