Summary: I purchased this sub 8 months ago at a local shop for $100 at a blow out sale, needless to say it was a great buy. I built a box to custom specs with great ply and made 45° cuts for the corners and caulked it, which I would reccomend for when you reach high voulmes so the sub handle the range your throwing at it and the gain. I paired the sub with a sony 100-gxs 600 watts rms monoblock class D amp.
Summary: I wanted a clean, quality setup. I paired this sub with a JL Audio JX500 amp, all JL wires, and a ported box to JL specs. Sounds great. I've gotten great feedback so far. More than enough if you are looking for a basic setup. The installer was actually reminded on how keeping the entire setup the same brand (JL), makes a difference. A lot of people will mismatch the setup. Keep it clean, keep it simple!
Summary: This sub is the best you can get for the price. I have one 12 in a band pass box in my focus hatchback powered by a jl a 1400 d series mono block amp wired for 2 ohms and it will literally take your breath away. I have friends running two 12 that can't come close to the knock I pull with my set up!