The US212 is a dual 12 inch, ultra-compact, direct radiating subwoofer that is designed to provide gut churning impact and solid musicality. Its 4 inch voice coils, strong neodymium magnets, and innovative low-turbulence ports permit an optimal tuning to be achieved in an enclosure that is unusually small for a dual 12 inch subwoofer. For overhead suspension, fourteen M10 suspension points allow either horizontal or vertical orientation. For ground stacking, the supplied vibration isolators may be threaded into any three M10 mounting points to prevent spurious vibrations and “walking”. When stacking enclosures, the vibration isolators nest in recesses surrounding the mounting points in the cabinet below. The input is mounted on a chamfer at the rear of the enclosure, allowing cable access without requiring additional space between the enclosure and a wall or stage. The US212 is perfectly suited for highly dynamic live performance venues and nightclubs, A/V screening rooms, and low frequency effects in theme parks. And, its small size allows it to be used under stages or built into small cavities.