15-SRX12S4 - Memphis 12" 250W RMS 500W Max Street Reference Subwoofer 15-SRX12S4 - Memphis 12" 250W RMS 500W Max Street Reference Subwoofer Power Handling: 250W RMS / 500W Peak Injection Molded Polypropylene Cone Butyl Rubber Surround Mounting Depth: 4.96"