Summary: This item is exactly what I expected. The reviews don't lie. Many others are using this with many different set ups with the exact same results. I am very happy with my purchase. I am currently using a cheap amp and my review mirror still shakes with only one of these in a small ported box. Trust me this is a great investment for those who are not trying to beat down the block or get a ticket.
Summary: I just bought these subs today and they sound amazing, they hit low and deep, i have two running in a ported box with a alpine mrp500 and they hit very very hard you wont be disappointed with these subs, i returned my 12 jl w3 for this and these blow it out of the water could not ask for more very pleased wont regret it
Summary: I have a 1000 watt BA GT2300 on this 400 watt sub... and it takes everybit of it. Now the amp is all the way down but the extension keeps begging for more. I've blown alot of woofers but this speaker takes the abuse without sacrificing sound qaulity...their very underated. I'm a JL fan also, but you would have to buy a 500 dollar W6 to get to this level seriuosly. I'm buying 2 p3 10's in the near future and turn that gain up...Rockford for subs-JL for amps!!!