right on, so a single 15 is the way to go you think? i would like to get a 15, but i guess i have fallen for the myth that subs that have the biggest mags rumble the most, not are the loudest but have the ability to shake the car. i had 2 oldschool, well they are 3 years old now, but i had 2 clif designs 10's that pounded the piss out of my car, and recently i got 2 12 inch subs and they have ablut 100 oz mags, compaired to the 200 oz mags the clifs had, but in short these 12's dont rumble at all, they just are kinda loud, and even then its an sq type sound not spl loud.