POWERFUL SUB FOR EFFORTLESS BASS - The Polk Monitor XT12 features a long-throw, high excursion 12" Dynamically Balanced Woofer, powered by a 100W Class A/B Amplifier that delivers bass as low as 24Hz, adding more impact to your music, movies, and games PREMIUM BUILD QUALITY AND MODERN DESIGN - An upgrade to the critically acclaimed Monitor series, the Polk Monitor XT series features latest innovations in affordable, great sounding speakers, and their stylish design blends with any home décor