Powered subwoofers are a vital part of your audio/video system. Whether added to a two-channel audiophile stereo system or in use with your home theater system, the powered subwoofer will play an important role in determining the sound quality of the system. Traditional speakers are only capable of playing down to certain frequencies. Therefore, powered subwoofers are important for achieving optimum overall response and quality, especially in listening rooms with an abundance of sound absorbng materials. Your music will be more alive sounding like never before and movies will seem more life like and exciting with the extra pounding effects of an 8, 10, or 12 inch powered subwoofer added to the system.