P3SD4-8 - Rockford Fosgate 8" 150W RMS Dual 4-Ohm Punch Series Shallow Mount Car Subwoofer P3SD4-8 - Rockford Fosgate 8" 150W RMS Dual 4-Ohm Punch Series Shallow Mount Car Subwoofer Power Handling: Peak: 300 watts | RMS: 150 watts Impedance: Dual 4 ohms Anodized aluminum cone and dustcap Top-mount depth: 2-11/16"