Damn... lots of questions and assumptions.
First, no they aren't 3kw, 5kw or 7kw amps. They're closer to 2kw

.. I know the handful of SPL competitors on here won't be happy to hear that but it just makes more sense. Given that power, the subs should handle it just fine.
They aren't Powerbass either...
No changes internally yet. These are the first set I've gotten in. Once I'm done with these we'll see where we go from here...