lol i been telling these guy my 3003 was loud in prefab ported box (look at my video links in sig) and i got it for $70 they play lower than many sub are very efficient 96db has dual spiders 600rms, it's a good sub.. it just has a cheap stamped basket..I am going with the HO in a 1ft3 sealed enclosure. Here is something that surprised me that I thought I would share...I heard a pioneer ts-w3003 and I was shocked at how well it sounded for 80.00. Played pretty accurately and reached pretty low.