Paradigm 15" subwoofer

Sound Loud, clean and taut bass -- "can deliver 20Hz bass at levels in excess of 100dB"; external crossover is very transparent. Features Servo-controlled 15" driver; built-in 400W amplifier; external active crossover/controller with phase adjustment; can be purchased with internal crossover too. Use Three high-pass adjustments -- 50Hz, 80Hz and 120Hz -- as well as phase should make it easy to get good results with different speakers in different rooms. Value A lot of technology for $1500; can truly boast significant bang-for-the-buck! There aren’t many components that can access the audio reviewer’s inner-child with greater vigor and rapidity than a big baaaad subwoofer. I am very proud of myself for resisting the urge (most of the time!) to crank the gain of the Servo-15 to unduly exaggerated and punishing levels -- such levels proved to be more punishing for other household members then for myself. Although my listening room is set up in a finished basement, it is my understanding that some extraneous rattles and buzzes were happening up on the main floor and made my poor wife feel somewhat ill at ease. In fact, on at least one occasion I heard her make a hasty retreat from the epicenter at Rancho de Paco (our humble abode) shortly after the tremors began.