When it comes to creating high-quality Hi-Fi sound in your home, selecting the right speakers is even more important. Sony makes it easy to extremely wide range of different speakers. If you hear a string quartet or just refined a powerful action films, Sony speakers designed, intensive acoustic experience that is both powerful and emotionally delivered. Description: 200-watt amplified subwoofer, 12 "Mica-reinforced cellular woofer and motion feedback technology, speaker and line level inputs, frequency response 20-200Hz.