This thing is a beast. Why would anyone who can afford one of these not get one. They are the ultimate sub. The main thing about the 13W7 is that it only runs on an RMS of 1000. All other subs must run on like 3000 to 5000 to match it. Eveyone else is to worried about what their subs look like and how their shaped (Kicker). They need to just stop where their at cause they dont even come close to JL. The only thing i didnt like about this sub is that i couldnt get a High Output box for it. Which wasnt even anything about the sub. Buy this if you can cause it is worth it. JL all the way.