that head unit blows get a better one and pay a little bit more money it will be better in the long run. get 4 volt preouts and more watts rms. Try 9830. YOU CANNOT RUN YOUR SUBS WITH THAT AMP!!!!!! if you get the 4 ohm you will overdrive your amp. you need to get a better amp that is one ohm stable like the jbl 600.1 or something. or if your psyched for your alpine get the dual 2 ohms if you can find them and put them in series. good luck