As always I am trying to find ways to improve what I've got. I had an idea and wanted to run it by you all to see just how silly it is! I have two old 15" drivers out of some 3-way towers. Their excursion is quite low, and their magnets are quite small as well. What if I mounted them as an IB, and ran perhaps 100 watts to each. I am sorry, I have no specs and I don't believe there were any distinguishing numbers on the magnet or frame. Would I get any usable spl out of them? Or would they best compete with some of the crappiest home subs out there?