Namsung Dual ALB10 10" Subwoofer with Ported Enclosure, 300W: * 10" subwoofer * Built-in 300W amplifier * Ported enclosure * Polypropylene cone in an acoustically matched ported MDF enclosure * Built-in MOSFET-powered amplifier with aluminum heatsink * Adjustable low pass crossover from 40Hz to 160Hz * RCA inputs from a headunit or speaker wire inputs * Dimensions: 12.6" x 16.5" x 9.8"