Head’s are going to turn when they hear the sound that pumps through the JBL GX Series speakers. But get in and “whoa!” they look incredible. General Specifications Type: 5-1/4” coaxial car audio loudspeaker Audio Specifications Frequency Response: 65Hz – 21kHz Power Handling (Peak): 135W Sensitivity: 91dB Nominal Impedance: 2.3 ohms