Hi guys i am looking for an amp to power my one alpine x-12, right now i have a jl audio jx360/2 amd from what i understand that is underpowering the sub. I think the sub is a 1000 watt rms 3000 w max and 4 ohms correct me if im wrong, amd the jx only puts out 360 watts rms, what would be an amp...