Sorry speed, but I STRONGLY disagree... JL Audio makes EXCELLENT subs, from w3 on up is gonna be worth every penny. They are power whores though. Best get a Good powerful amp to push them . I had 800w rms on one 10" w7 that set every car alarm off on my street and the spl and clarity was amazing. They key is LOTS of CLEAN power. Don't try to use a 5000w power acoustic amp that gives you closer to 500w or clean power. Choose 800-1000 watts from an alpine, kicker or jL audio amp. Just try it, if you're unsatisfied I'll buy it back from ya.