If it were me, I would choose between the crescendo bc2000, or the soundqubed sq2200, both are workhorse amps decent prices. you won't be disappointed with either of those. There is also an american bass hybrid 4488, that would more than satisfy you and those type x's. The most important part of it though, is the enlcosure, it can make or break your system. Those subs can do work in a sealed enclosure, but they would literally blow you mind in a custom built ported. And, you will need to up your electricals, as previously stated, to thuroughly enjoy what ever you end up with.