Just got Polk Momo MM12 enclosed subwoofer for my Chevy Suburban. I am now looking for a good amplifier, because my Rockford Fosgate 501s AMP took a crap on me. The subwoofer is 500w RMS and 1000w PEAK 4OHMS I beleive single coil. What would be the best AMP for this. The budget for me is no more then $300. Thanks for your help, God Bless