I own two of these with one legacy 2060 amp going to EACH one! 0 gauge wiring kit, 5 farad cap, one yellow top battery just for my system, and a 120 amp altenator. They are in a 4 door 2001 VW GLX Jetta VR6! I also have the audiobahn recommended ported box from this site, and it beats the living HELL out of me! My Rear view mirror fell off the first time I cranked it up! It was kinda imbarrasing seeing how I was trying to impress some chicks. I keep these things at low volume, until someone pulls up beating at a stop light, then I crank it up, drown em' out, rattle his entire car and my rear view mirror falls off again! Well worth the money! My system is louder than my boyz and he's pushing three Solo Baric L7's with one amp on each sub with the same amps I got! If you want to sound like you got a system this is not the sub for you, BUT if you want to sound like you got a gorilla trying to get out your trunk, than the monkeying around stops here!