Rockford Fosgate Prime R152 5.25-Inch Full Range Coaxial Speakers (Discontinued by Manufacturer) 5.25-inch full-range speaker with 70 watts maximum power handling (35 watts RMS) Mica-injected polypropylene cone with foam surround 1/2-inch mylar balanced dome tweeter 18 AWG stamped steel frame 53Hz - 22kHz frequency response with 87dB sensitivity