Sonos Sub 4 Wireless Subwoofer – Black

The Sonos Sub 4 adds low-frequency output to a compatible Sonos music or home-cinema system. Two inward-facing elliptical woofers operate in a force-cancelling arrangement designed to reduce cabinet vibration, while dual Class-D amplifiers drive the speakers inside a ported enclosure. Setup and system pairing take place through the Sonos app over a suitable network. This is not a universal RCA or LFE-input subwoofer for arbitrary amplifiers and receivers, and it needs mains power despite the wireless audio connection. The matte Black cabinet can stand upright or lie on its side, subject to the manufacturer's positioning guidance. Trueplay room tuning is available with supported Sonos equipment and setup; this description does not promise identical phone compatibility in every configuration. The listing contains one Sub 4, not a soundbar, speaker pair or complete surround package.