Description Features: American Bass XR-10D4 2000w 10″ Competition Car Subwoofer 3″ Voice Coil/200 Oz RMS: 1000 Watts MAX: 2000 Watts Impedance: Dual 4-ohm Fo: 35 Hz Imp: 4 4 Sensitivity@1w/1m: 88 dB Frequency Range: 30Hz-500Hz Magnet: 200 Oz Voice Coil: 3 inch Mounting Depth: 7.087 inch Mounting Diameter: 9.764 inch Shipping Dimension (L x W x H): 12 in. x 12 in. x 11 in. Shipping Weight: 30 lbs Enclosure Specifications: 1.25 cubic feet ported, 1 cubic feet sealed Brand: AMERICAN BASS Manufacturer Part Number: XR 10 D4 Manufacturer: American Bass Assembled Product Dimensions (L x W x H): 12.00 x 12.00 x 11.00 Inches