I didn't want to spend much $ on my system, but I wanted a nice sound. So I decided to try this 15" sub. I also bought a 2000 watt lanzar amp. I couldn't believe the bass this sub puts out. Unbelievable. I used a ported box I got off eBay. I defiantly recommend it to anyone who wants a nice sounding system with big bass and don't want to spend Lot of $. Just a few days ago, a guy heard my system and he said my blows his away and he had 2 12 " Rockford Fosgate. Love it. You can spend a lot more on a big name audio. But why?