Perhaps that presence peak and excursion of the voice coil is the reason for its detail resolution !
However crossovers with the tweeter are normally below this peak and have v steep 24 dB per octave attenuation.
Roger

Last edited by Roger; 2013-04-20 00:27.
518, 568.2, D6Ks, D6KC, iMac dual core, iTunes 10.1 (lossless), Apogee Duet, Kuro 500A, Logic Studio, Sound Devices 702.