Well, the Klipsch definitely shows major dips in the midbass and midrange, two areas where the ear is very sensitive, and so while the overall SPL is pretty close I'm not surprised that the EV subjectively sounds louder, though not necessarily better. In fact many studies have shown that the ear finds most pleasing frequencies that it is less sensitive to: bass and treble. As to why the Klipsch has a case of the dips, could be diffraction and Allison effects that the larger radiating planes on the EVs do a better job of controlling.