“Bought my Velodyne ULD-18 in 1989 for about $2400.00 and it served me well until March of 2013. At that time it self destructed while watching a loud DTS sound track movie. Velodyne said sorry we don't support that unit anymore and there are no replacement drivers available. After a short Internet search I discovered another sad ULD-18 owner who replaced the Velodyne with this Dayton Audio 18"...” --chasby
High Dispersion center channel loudspeaker with built in powered subwoofer
Dayton Audio's Ultimax Series DVC subwoofers are purpose-built to move air and create clean, articulate, fast bass. Experience the apex of subwoofer design.
Bipolar surround speaker
Floor-standing bipolar SuperTower loudspeaker with built-in powered subwoofer
Dayton Loudspeaker's new 15" subwoofer kit is designed to provide earth-shaking bass in an easy-to-assemble kit. With a powerful 250 watt amp, high-excursion 15" driver, and rigid cabinet, you will not be able to find a better quality, higher performance subwoofer at this price.
Ultra Compact Subwoofer
Definitive Technology SuperCube 6000 Ultra Compact High Performance Subwoofer
When you listen to any of Definitive Technology's award-winning powered subwoofers, you will discover true state-of-the-art bass performance, extending down well beyond the limits of audibility into the range of purely physical subsonic energy that shakes the body and stirs the soul. This has long been the most exciting, sought after and rarest of audio achievements, and now it is yours...
“Home Theater Magazine Review http://www.hometheater.com/content/two-bass-busters-and-solo-mojo Spec Sheet off of Def Tech site (http://www.definitivetech.com/products/supercube-trinity): Power Internal Amplifier Channels 1 Power 2000 watts Type Class D Driver Complement Subwoofer Quantity 2 Diameter 14" (35.56cm) Type High Excursion Active Subwoofer Driver Bass...” --brawlman