Eprovenzano - I won't speak for Kevin, he likely has forgotten more about drivers that I will ever know, but I have stated my belief that this will be a beauty to implement for OB bass, if you keep "sensible" goals in mind. Kevin astutely points out that the implementation is critical, but I will go on record saying that all the relevant specs (the combo of QTS, FS and XMAX, and swept area) all look really strong for this to be a great performer.
I do indeed use a set of b200's (no EQ on anything but the bass in my system) and leverage one of these from Reckhorn to split the upper and lower frequencies -
http://www.reckhorn.com/index.php?ln=en&prod=f1 - they are cheap and cheerful from Bob at CSS in Canada (less than $80).
From there, the bass frequencies are run through an old analog EQ I have, then onto my sub amp, then out to the 12's I use (1 in each baffle). Very simple stuff, just a little tough to express in the written word.
I would recommend a MWW arrangement, to better leverage floor boost (the upper woofer in a WMW would be quite far from the floor) and I would think a simple U baffle would work wonders with this driver. There is a thread in the Open Baffle circle right now, where someone has posted a link to Martin King's musings on a passive OB bass solution (it points out how baffle width and depth in a U or H will affect efficiency and extension) but it is very simple to apply to active installations too - the efficiency part becomes far less critical as you just dial up more power from the sub amp.
My woofers (not from Kevin) are likely mid 80's efficient, and 100wpc each has them keeping up with the b200 no problem, so I would think that a quartet of these 15's would be fine sharing anything over 100wpc (ie 100 each).
I hope I get the chance to sample these, but I am not sure I can swing the deal right now - they are priced wonderfully, but only the tax man will know if I can afford them before May!
