Pioneer 12" 1300W Peak Single 4-Ohm Champion Series Component Car Audio Subwoofer 12" Champion Series Component Car Subwoofer Power Handling: Peak: 1300 watts RMS: 300 watts Impedance: Single 4 ohm Frequency Response: 20-125 Hz / Sensitivity: 96 dB Mounting Depth: 5.31" / Cutout Dimensions: 11.06"