Black Rhino series subwoofers deliver awesome, room-filling, deep and accurate bass from incredibly small and gorgeous cabinets. Dual heavy-duty drivers are arranged in a bipole configuration creating prodigious amounts of bass output. Powered by our own high power digital switching amplifier. Butyl rubber surround provides excellent cone control and exceptional durability. Auto on/off circuit with LED indicator. Gold-plated binding posts for a high quality and secure connection. Includes 10ft high quality gold plated interconnect cable. Line level inputs, phase and crossover bypass switches. Satellite speaker crossover, first order at 80Hz. Solid brass isolation cones. Variable crossover 50 to 150Hz. Black Rhino series subwoofers will satisfy even the most bass hungry listener.