I was wandering if anyone has a "buttkicker 2" in their home theatre cause i was looking at purchasing one to put in my couch to add to the feel of the subwoofer. I am wandering if anyone has good or bad things to say about them? or if their worth the money? Thanks Kris here's what their website has to say: The ButtKicker® Shaker The ButtKicker Shaker utilizes a patented magnetic suspension which is different from any other speaker or shaker and can be used couches, theater seating, platforms, and any type of structure. The ButtKicker accurately reproduce the "feeling" range of many natural and man-made sounds, such as earthquakes, thunderstorms, rocket launches, waves, explosions, tornadoes, volcanoes, dinosaurs, sound effects and all styles of music. Different from other shakers or tactile transducers that use voice coil technology, the ButtKicker is much more powerful, more musical (linear) and offer true infrasonic or low frequency response with their resonant frequency of 9 Hz and range of 5 - 200 Hz. One ButtKicker Shaker will easily replace 2 - 4 or more of the other types of shakers previously available, and perhaps more importantly; it is virtually indestructible and maintenance free. The ButtKicker Shaker is used in: Theme park attractions; Specialty theaters; Simulators; Virtual reality machines; Arcade and amusement rides/games; Custom Home theaters; Musician monitor systems. If you are looking to delight and electrify yourself and others with an affordable and easy to use solution, now is the time to incorporate the ButtKicker into your design.