The PSW125 Powered Subwoofer delivers powerful, accurate and musical bass at shockingly low prices. Built for power and value, the PSW125 represents a continuing refinement of the highly regarded PSW Series and a great introduction to visceral home theater bass performance. Loud & Low Specs(CEA2010): Low 118 db / Ultra 90.5 db

Wilson Audio's Thor's Hammer is characteristically a very high-efficiency speaker at 93 dB, which means it has the ability to keep up with Wilson's popular WATT Puppy version 8, MAXX version 3 and Alexandria loudspeakers. The Wilson Audio Thor's Hammer weighs a massive 412 pounds when sitting in your listening room and an even more hefty 545 pounds when crated up and ready to ship. There is nothing undersized or low-performance about this subwoofer.