i just bought 4 12s for my car and i also just bought a 7" Tv dvd player combo for it. The tv/dvd player doesn't not have an output for an amp or even a sub woofer. Is there anything that i could do to hook these 4 12s up with 2 amps to this tv/ dvd player? and if so could you tell me how or where to go to get the information. Any help is greatly appreciated. Thank you