Power Acoustik P1-12W P1 Series Subwoofer: * Texture coat finish on stamped steel basket * Polypropylene injection molded cone * Butyl-rubber surround * Kapton voice coil former * Nickel plated compression 8 gauge wire terminal * Poly cotton spider suspension * Suspension integrated tinsel leads * Impedance: 4 ohms * Maximum Power: 900W * RMS Power: 400W * Coil Size: 2" * Xmech: 21mm * Mounting Depth: 5" * Cutout Diameter: 11" * One Subwoofer