Transparent enclosures are a staple of product exhibits but in the case of the Velodyne DD-10 ($1999), this is the actual product! Good art is destiny in this cynical blogging game, so you don't get to see the arguably newsworthier MicroVee six-inch sub, with front-firing driver and passive radiators on the side, and 1000 watts of Class D power. Velodyne, ever versatile, also has in-wall and in-ceiling models. And it showed, yet again, the 1812 Digital Drive monster sub, one of the few subs with a crossover--from a 12-inch driver to an 8-inch one. We never tire of seeing and hearing its mighty cones vibrate.