I am currently running 2 of the new alPine type R 10s 600watts RMS each in a 3.0 cb ft box tuned to about 33htz powered by a 1000 watt rms arc audio amp! I wanna Do a single 12 setup and will be powering it with the same 1000 watt amp! I'm hoping that the new sub hits just as hard or harder then my 10s which I think hit pretty hard and sound great! I made the box to specs for the type Rs and will me making the box to specs doe the new sub! Im looking into the Fi Q, Fi BL, a Memphis mojo, a Rockford Power T2, a RE SXX, Audioque hdc3 or any other good sub u guys can throw out their! I'm really considering the Fi cuz I've always heard good things and that they hit but I don't know if to get the Q or the BL and if it would be louder then my type Rs! Please I need some help and advice!!!