10-inch car audio subwoofer delivers 400 watts of MAX and 200 watts RMS for powerful sound on every road trip. Engineered with 4-ohm impedance, 2-inch dual voice coil, and vented aluminum former to reduce heat distortion. Rugged, powder-coated steel frame supports back venting for enhanced power handling and durability. Spade-style terminals enable straightforward installation; fits in small or medium sealed enclosure or large vented enclosure. Poly-cotton spider and surround lets woofer handle more power with minimal distortion