General SpecificationsPower Handling: 90W RMS, 270W peakSensitivity (@ 2.83V): 89dBFrequency Response: 46Hz â 21kHzVoice Coil Diameter: 1 in. (25mm)Impedance: 2.7ohmsInfinity's Kappa speakers set a new standard in car audio. Our Patented Plus One⢠woofers deliver tight robust bass and high-outpu..