INFINITY ALPHA 6520 280 WATTS 2 WAY COAXIAL CAR SPEAKER Features amp; details Maximum power: 280W RMS power: 40W Impedance, Ohm: 4 Sensitivity (2.83 V / m), dB: 91 Frequency range, Hz: 55 - 20000 Product information Brand Infinity Manufacturer HARMAN INTERNATIONAL Origin China Model Alpha 6520 Package Dimensions 40.4 x 21.8 x 9.5 cm Item model number Alpha 6520 Speaker Connectivity Coaxial Wattage 280 Watts