This is why it is ESSENTIAL that you guys check the T/S parameters before buying woofers, ESPECIALLY when dealing with midbass response. There seems to be a lot of guess work, but here really is not guess work at all...with such a large coil I would expect the QES to be very low, and this chart confirms my beliefs...
Its no surprise, with a QTS of .33 this would lack midbass in an IB or sealed alignment. These would be much better off in a home alignment in a bass reflex...
Simple rules of thumb when choosing midbass drivers in IB or sealed alignments. Keep in mind that you still need experiences from others for the midrange response...
QTS: Aim for AT LEAST .5 or higher, preferably in the .7+ range. Ever wonder why the RSDs have such great midbass? IIRC, their Q falls between .7-.9
FS: One could argue just as important, but IMO comes second to QTS. A good way to compare drivers is to take FS/QTS. The lower number, the better for IB or sealed pods...
X-max: With these drivers, it is essential to have plenty of throw to work with. A higher QTS means either a weaker motor, soft suspension, or both so you may run out of throw very quickly, especially when the Q surpasses the 1.0 level.
There are obviously trade offs for each, but higher Q drivers have higher sensitivity, roll off closer to their FS (extend lower), and are "Punchier".