I recieved my xcon 15" a week ago, and Wow! where do I begin? After obsessing over craftsmanship (simple yet eye catching) I ended up using a 3.2 cu. ft. enclosure tuned to 30hz. This beast is powered by a 1000/1 (4 ohms) and a nak for the sound source. If there's a way to describe how hard and clean this thing pounds, It's bruce lee kicking you spot on your chest with the music. This is a great subwoofer, I've heard W7's and this one takes the cake especially at its price. Enough talk here's some photos: My ride quick comparison to alpine type r 12" Boxed, carpeted, ready to thump! I would like to thank Aaron, Mark, and the rest of the people at this company for excellent customer service. It was a 2 month stretch but very well worth it for my patient ears.