Focal Performance Sub P 30 12" 4-ohm subwoofer SUB P30 - Focal 12" 250W RMS 500W Max Single 4-Ohm Subwoofer Power range: 100-250 watts RMS / Peak power handling: 500 watts Frequency response: 35-500 Hz Sensitivity: 90.8 dB Top-mount depth: 5-3/4"