I haven't bought this sub yet but, i do plan on buying a 15" mag and plan on having a JL 500/1 feeding it. I really don't want to go over $1,000 and still have a bad ass system. I might even save up for the JL 1000/1 but its a bit more than i want to spend. I am shooting for SQ and still want low's. I'm guessing 3^3 seal box will have slightly better lows than 2.5^3? This install is going into a Crown Victoria 89'. So i got plenty of trunk space to deal with. Also curious how loud this speaker would get with just a JL 500/1 feeding it instead of having a JL 1000/1.