What would an action movie be without a bomb exploding and vibrating right into your stomach? This effect (and many others) is the prerogative of your Active Subwoofer, whose job it is to make those kinds of passages sound extremely realistic. To get the realism that the director or musician wanted to express, the signal from the source to your Active Subwoofer has to be perfect. Otherwise, much of the potential is lost and the emotion is gone. The problem of flat sound, without dynamics and physicality is all too often caused by incorrect or insufficient wiring, for the high quality of your Audio equipment. The classic detail that makes the difference.