The Yamaha YST-SW 500 is a powerful subwoofer designed to deliver deep and accurate bass response, making it suitable for both music and movie applications. It features Yamaha's unique Advanced YST (Yamaha Active Servo Technology), which allows for improved cone control and enhanced bass performance. This subwoofer utilizes a 10-inch cone driver and a built-in amplifier, providing an output power of around 250 watts RMS. The frequency response ranges from 20 Hz to 160 Hz, making it capable of reproducing the deepest tones in music and cinema. The subwoofer includes a phase switch and a variable low-pass filter, allowing users to adjust the crossover frequency to match their main speakers. The cabinet design is sleek and sturdy, typically available in a black wood finish, complementing various home theater setups. The YST-SW 500 also features automatic power on/off, ensuring energy efficiency. Overall, it enhances the listening experience by adding depth and impact to soundtracks and audio tracks.