12-inch dual 4 ohm voice coil subwoofer with 1400 Watts peak (400 nominal) power handling * One-piece, seamless IMPP composite cone design for high power handling and accuracy * Dual-layer elastic polymer surround for added durability and lightness * Dual 4 ohm sub can be wired at 2 or 8 ohms, with all terminals on one side for convenience * Frequency response: 20 Hz to 220 Hz; Sensitivity: 94 dB