DTI DS65MR 6-1/2&rdquo; 220 Watts Max Power 2-Way Marine Boat Water Resistant High Power Audio Stereo Coaxial Speaker System (white) 220W Max Power, 4 Ohm Impedance, Sensitivity: 90 dB 15 Oz Magnet / 30 Oz Magnet Structure, Frequency Response: 65 Hz -20 KHz 1"High Temperature KaptonVoice Coil, 20mm Neodymium Teteron Dome Tweeter High Quality White P.P Cone, Santoprene Surround, Water Resistant Construction Design