Pyle PDW15125 15-Inch Performance Optimized High Power Subwoofer 15'' High Power Subwoofer - 500 Watts RMS / 1000 Watts Peak Power Handling 36Hz Resonance - Frequency Response: 36Hz ~ 4kHz - Sensitivity (1W/1M): 103dB Magnet Weight: 200oz. - 4'' Aluminum Voice Coil Diameter: 15.8'' - Mounting Depth: 6.7'' Die-Cast Aluminum Frame - 8 Ohm Impedance Frequency reponse: 36Hz-4kHz 500W RMS/1000W peak power 8 ohm impedance 4" aluminum voice coil