400 Watt Fourth-Order 10" Dual Bandpass Subwoofer for Sale. Nice sounding sub with a good transient response. Used but in good condition. Below are some of the specifications... * Two 10" Super Sound 4 Ω Subwoofers (NWF-10) * 200 Watts Per Channel Max Power Handling * 400 Watts TOTAL Max Power Handling * Frequency Response: 35Hz-1k Hz * Tuned Ports: Two 4-inch * High Energy Magnets * Bandpass Alignment for Extra Deep Bass * Plexiglass Front Window * Dimensions: 16'' wide x 12" tall x 28.5'' long