í have one Audiobahn AW-1500 that is 800 watts rms. I have a full size van that im going to use to haul around some kayaks. I currently have a us amps usa-100 I was going to use to power the sub but i'm not sure if it will be powerful enough. I really don't want to spend very much money on the system, but I was thinking about buying a cheaper class d mono amp from carstereoonline. Would I be better running the usa-100, or buying a budget 1500 watt hifonics, or planet audio amp? Like I said before I really don't want to spend any money, but I was thinking a cheap $150 amp if it will make the 15"sub beat harder.