Have a 12 inch kicker cvr in vented box and a kenwood kac 7205. Didnt do my research and appaerntly this amp will put out 500 watts rms to a 4 ohm sub. But my sub is 2 ohm and the specs on amp say it only gives 250 watts rms to a 2 ohm sub. The sub can handle 400 watts tho. So i got the alpine mrp-m500 which puts out 500 wats rms to a 2 ohm sub would my system be twice as loud? Would this be worth doing? Also im using a line out converter so i still have a stock radio. So should i buy a new amp or a new head unit ?? Cant get both //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif