The Velodyne Digital Drive + 12 Inch Subwoofer is the best sealed 12" I've ever tested. - YouTube
Velodyne DD10 DD12 DD15 DD18 Subwoofer amplifier Repair Service
Velodyne Digital Drive PLUS 12 Inch Subwoofer(gloss black)(each) Velodyne Digital Drive PLUS 12 Inch Subwoofer Black - $2,880.00 : New Audio & Video, New Electronics at Lowest Prices!
Lefson Repair - VELODYNE - DD12 - The power amplifier and... | Facebook
Velodyne DD12 12” powered subwoofer in near pristine condition | AVS Forum
Velodyne Digital Drive DD-12 (Series 1) Subwoofer – Holt Hill Audio