Logitech Z443. Speaker placement: Tabletop/bookshelf, Driver size: 7.62 cm (3"), Woofer size: 13.3 cm (5.25"). RMS rated power: 55 W. Colour of product: Black, Housing material: Fiberboard. Connectivity technology: Wired, Speaker interface type: 3.5 mm. Power source type: AC110w peak powerLoud enough and powerful enough for whatever you're listening to, the Z443 fills the room with big, bold, dynamic sound.3-inch satellite drivers plus 5.25-inch subwoofer driverThe satellites on the Z443 are optimized to produce crisp high notes and a balanced midrange while the subwoofer pumps out a chest-thumping amount of bass.Wooden enclosuresMade from Medium Density Fiberboard, the enclosures deliver deeper, warmer sound and a consistent acoustic experience.Convenient controlsVolume and bass control knobs are located right on the front of subwoofer. So you can set the audio to suit your personal taste.Hi-Fi inspired designA dark wood body, removable fabric grills and a high-gloss control panel make these speakers a perfect fit for any contemporary interior.Best-in-class acousticsTested and tuned at the state-of-the-art Logitech research and development labs, the Z443 is engineered to the same standards that have made Logitech the #1 selling PC speakers brand worldwide