I'm going to have to say right off that this woofer is a beast. I currently am using it as a DJ sub and it handles everything my CS 2000 can throw at it. It is setup for daily use tuned to about 35hz. I had a gig the other weekend in a big open shop and it was the first time that I really got to throw all of my amp at it. The party goers had to drive a mile or so to get to the location and I had multiple compliments on the bass. Most, if not all, of the compliments were "I can here that thing about a mile away!". I beat the woofer all night from about 10:00 p.m. to 5:00 a.m. with my amp peaking at 4000w RMS +. There were times that the woofer enclosure was floating around the floor. I had a couple people sit on it to see if it would stop moving. All in all the woofer got a little warm nothing more, the gig was great, and everyone had a great time. I will never buy another brand of woofer when I am running a single sub setup. Fi is the best period.