Product details:

DMA Optimized Motor System Most Real Excursion in its Class Elevated Frame-Cooling Thermal Power Handling (Pt): 500W Nominal Impedance (Znom): 4 ohm This W0v3 Series sub features a tough polypropylene cone that resists flexing, and a durable foam surround that'll stand up to hard use. The cone's extra-long excursion capability lets it hit truly deep notes without distorting, while the hefty 2.5-inch voice coil drives the woofer accurately for top-notch performance under extreme conditions.