6 x 9" 2-WAY ANTI-UV MARINE SPEAKER . Magnet: 13.3 Oz . P.P.+Mica Cone Rubber Edge . Voice Coil: 30mm K.S.V. . 20mm PEI Horn Tweeter . RMS Power: 50W . Maximum Recommended Amplifier Power: 100W . Impedance: 4 Ohms