2-way marine speakers feature a shallow 1.5-inch mounting depth Pyle's 5.25-inch dual cone speakers deliver exceptional power for their size Waterproof speakers for marine use, car stereo or outdoor home audio system Polypropylene cone w/cloth surround in molded ABS plastic basket Built-in molded grill 20-ounce circuit magnet Frequency response: 100Hz-18KHz Impedance: 4 Ohms Peak power: 100 Watts Sensitivity: 88dB Wires and mounting hardware included