Memphis Audio 15PRX52 / 15-PRX52 / 15-PRX52 Power Reference 5.25 Full Range Speakers 15-PRX52 - Memphis 5.25" 30W RMS 2-Way Coaxial Speakers Power Handling: RMS / Peak: 30W / 60W Polypropylene Cone. Sensitive enough to sound great, even with a factory car audio system. Polyurethane Surround. Durable and lightweight for high-efficiency and quick response. Mounting Depth: 2.125"