Through recent browsing I've stumbled upon the "SPL" subs. They look like some real good subs, I've been curious as to how they perform but I have never heard of them and none of my friends have either. They look similar in the design of the PA MOFO and what I'd like to know is which sub is louder. If any of you know what the deal is with this sub please share your info. If any of you haven't heard of this sub check out this link: http://www.electronixwarehouse.com/car/sgl-prod/speakers/woofers/spl/splw15.htm