Single 6 vs dual 4 for midrange?

[Ap]

Looking for advice on midrange for a 3way - which would be better 2x4" in an MTM versus a single 6"?
(Am after sensitivity/dynamics/detail etc. all the usual audiophile terms)

 

[mike.e]

Considerations-
Upper cutoff
Lower cutoff
midband sensitivity

Upper cutoff determined by driver circumference

Low cutoff determined by Vd

Two drivers doing same range when wavelengths become comparable to spacing- multidirectional system,not necessarily coherent.

http://www.woodartistry.com/linkwitzlab/x-sb80-3wy.htm

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