Have you heard them? Not saying you haven't, but don't speake before you listen. The ones I'm refering to aren't the walmart line, but the DUB series subs are great subs for their $$. They were put in there recamended ported enclosure. I'm not sure but I'm informed that they have two levels, the 100/120 series (walmart) and the 1000/1200 series (not walmart)?