Excerpt: Velodyne Acoustics is arguably the most well known subwoofer manufacturer in the world. In the early 1980’s, a Velodyne subwoofer was simply the subwoofer to own. If you wanted the best subwoofer made, you purchased a Velodyne - end of story. At that time, the Velodyne ULD Series set the standard in subwoofer design and everyone soon wanted to purchase the big subwoofer that looked like a coffee table.
Excerpt: Allow us to introduce the Velodyne SPL series. These come with moulded front baffles that horn-load the woofers' output and a little window in the front. The Velodyne's neat grillehas a corresponding hole for infra red light to shine through, as this woofer comes complete with a test microphone and an infrared remote control system.