Enjoy clear, vibrant, and rich tones with the Bowers & Wilkins M-1 bookshelf speaker. Mount it horizontally to create a central channel speaker, set up in pairs for stereo music, or add more speakers to create immersive surround sound. It features a 4-inch woofer and a 1-inch tweeter for faithful sound reproduction and dynamic acoustic depth. | Bowers & Wilkins M-1 100-Watt Bookshelf Speaker - Single - Black