Sounds_real_audio --
I you think the 2" midrange driver can carry the day going from 1 kHz up to 20 kHz then have at emÂ…..I prefer a larger but not to large midrange, between 6" and 7.5" to get the heft from instruments and especially male vocals.
A 2"(voice coil) compression driver, in this case (augmented by the 15" paper cone) and others, functions in conjunction with a horn/waveguide in which the effective area of air displacement is considerably larger than what the voice coil diameter would suggest - in effect close if not equal to the mouth area of the horn or waveguide; suddenly a 2" comp. driver is converted into an air impedance transformer, being much more potent than what a 6-8" cone driver can achieve with better speed, much higher sensitivity, lower distortion, and providing much better energy coherence in tandem with the larger and light-coned mid/bass unit
Moreover, as stated already, a single 1kHz crossover has huge benefits compared to a crossover point in the higher frequency range where the human ear is even more sensitive, not to dismiss avoiding the negative impact of crossing over a bass unit in the 200-400Hz and the negative effect this can have on the lower mids/upper bass and how it further affects the coherence here.
My own speakers only sport a 1" compression driver placed in front of a 12" OSWG waveguide crossed at 1.3-1.4kHz to 12" mid/bass unit, and I can tell you the heft, physicality and clarity of Frank Sinatra's voice on Frank Sinatra Sings for Only the Lonely makes most every other conventionally driven speaker I've heard pale in comparison.
I've never heard the Westminster's, but would love to.
