A 120-watt long-stroke, 8" woofer and bass-reflex design cabinet that maintains high efficiency and low distortion; that's what the yamaha hs10w at musicians friend is made of. If you are in the market for an excellent subwoofer to boost your music I would recommend that you check this out. Most subwoofer would just irritate you with the loud boom boom sounds, this one is different because the sound is clear, loud and perfect.