Corey are you the one who just bought or was considering buying the 18" x.x.x. ? If so I have a 18" x.x.x. in a 7.5 cube dual slot port enclosure tuned to 28 Hz and it sounds awesome. I also built window on one side, used 1/2" plexxi glass and put in a blue light that lights on with the beat of the music, pretty cool, you can see the huge sub inside the box from the side window.