Powerful Yamaha Active Subwoofer is a unique product built with advanced technique. It is very easy to handle and install. It is equipped with the unique ace-bass technique combined with the built-in amplifier, the long throw woofers and the extremely solid cabinet offering a natural and deep bass reproduction at sound levels you never thought existed. The Subwoofer offers extraordinary performance and lots of possibilities.
Yamaha's Advanced YST Active Servo technology to bring you low-frequency impact you'll love. Other cool and convenient Yamaha technologies include the Bass Action Selector System — you can switch between movie-enhancing home theater rumble and the tight, accurate bass that gives music extra punch. features a phase switch and signal-sensing power on/off.