What on earth are you talking about? 15watts of power? I have heavily clipped an EP2500 bridged into a single DB500 and not smoked it. For the price of your 10" titanic, (shipped) you can get a TC10 OEM, this driver will utterly destroy a titanic, with 10mm more one way excursion, about twice the power handling, and a beefier construction.
First of all, for cheaper than the 15" titanic, you can get the 15" TC1k, a driver with 4mm more excursion each way, a pretty much equally sized motor and a 60cm larger sd.
The 12" titanic and 12" TC1k compare up pretty much the same way as the 15's, the TC's have more Sd and more excursion with similar motors