you should put a hiphonics amp in car they give out good wattage and are not very expensive. u can pick them up on ebay cheap. I have a 1500 w amp for my 2 solo-baric l7 and that shit hits hard. it cracked my spoiler on the back of car. They usally cost around $350 for the one i have , but for what u need it should'nt cost that much.