PSB has redefined high performance and high value with its legendary Alpha series speakers, and the new Alpha S10 active subwoofer continues that tradition in the all-important bass region. Although the S10 is compact and affordable, it takes on music and home theater systems when deep bass is a must. The Alpha S10 is up to the challenge with a 10-inch long-throw woofer with a polypropylene cone in a specially tuned bass reflex enclosure. Add DSP control and a state-of-the-art digital amplifier and the magic begins.