From a value proposition, the BOSS platforms using those JBLs seem very high in the Bang-For-The-Buck category. Over in the Devastaor threads on AVS, there are guys that go out and buy 10 or 12 of those drivers at a time. Of course, there is also a
Dev Build for 4 of those 12" JBLs... I think one guy may have a BOSS platform and at least 4 of those Quad Devs.
A big part of that whole concept is the value proposition of what you are getting from 4-6 12" drivers. In fact, I've seen several cats over there comment that it's not strictly a Tactile effect that they are getting from their platforms but that the platform is actually registering on room sweeps with some legit infrasonic impact.