The Panasonic Subwoofer SB-W40 is a 220 watt (max) silver subwoofer designed for home theater systems. It is a rectangular-shaped device made of plastic and fiberboard, offering wired connectivity with an impedance of 6 ohms. This portable subwoofer from Panasonic, with a model number of SB-W40, is compatible with various brands and provides 110 watts of RMS power for enhanced audio quality. Perfect for enhancing the bass in your home audio setup, this subwoofer is a reliable choice for improving your TV, video, and home audio experience.