New. Still in the box. All proceeds go to our charity in Peru. Computer sound system. The X-540 5.1 Speaker System from Logitech delivers powerful surround sound performance aimed at computer users. Bass level and volume can be easily controlled via the control center. Each satellite speaker features dual 2" drivers. They are coupled with a large 5.25" subwoofer to complete the package, providing excellent bass and giving true depth to your sound. Computer users who appreciate great sound will not be disappointed.