4-inch 5-element 3-way 4th order rear vented loudspeaker. Solid isolation cones. Automatic overload protection circuit. Curved sidewall construction cabinetry with attractive black on black wood grain vinyl. Butyl rubber surround provides excellent cone control and exceptional durability. Gold plated binding posts for high quality and secure connection. 7-year limited transferable warranty on parts and labor. Designed in the USA.