I RECENTLY BOUGHT 2 15" PIONEER IMPP'S AND A KICKER KX 500.2 AMP FOR $200.00. IT SOUNDS O.K. BUT I WANT IT TO SOUND LOUDER. MY TRUNK SPACE WILL ONLY PROBABLY HANDLE THE TWO 15" IMPP'S AND SOME 12". SO I WAS WONDERING IF ANYBODY COULD GIVE ME SOME SUGGESTIONS ON ANOTHR AMP FOR THE 12" AND WHAT TYPE OF 12" SPEAKERS CAN I OR SHOULD I GET. I AM LOOKING TO BUY 2 12" KICKERS OF MY BOY FOR $50.00 BUT THEN I NEED AN AMP. WHAT AMP DO YOU SUGGEST LOOKING TO SPEND ABOUT $350.00 ON A DESCENT AMP. ALSO WHAT IS THE DIFFERENCE FROM 2 OHM, 4 OHM, AND BRIDGE MONO HOOKUP. WHAT IS THE BEST AND PLEASE HELP.