Yamaha NS-C444 250 W Center Channel Speaker feature Waveguide horns, PMD (Polymer-injected Mica Diaphragm) woofers and highest quality internal Monster Cable wiring for total enjoyment of digital movie sound and music sources, plus elegant Yamaha traditional piano finish cabinets. It is 2-Way Acoustic Suspension Speaker System. Its Waveguide horn allows the sound field to be shaped and controlled for optimal spatial expression in home theater environments.