Hexibass is a member on this board. He is from Sierra Vista, Arizona and is a sound shop owner. His VX is built for SPL competition. I am pretty sure he doesn't drive it around at that volume every day. I believe that is one of his demo video's from his web site. In on of Biju's stereo incarnations he used sub boxex designed by Hexi. I have tryed to get Hexi to join in on one of our get togethers here in Az to check his creation out first hand but he has yet to make it.