Marine Series Speaker Configuration 6.5" Coaxial Size Midrange: 6.5", Tweeter: 1" Impedance 4-Ohms Power Handling 75 Watts RMS. 150 Watts Max Frequency Response 53Hz - 22kHz Woofer Displacement 0.703 liters, Cutout Diameter 5.15 in., Mounting Depth 2.80"