4″ 2-way coaxial speakers Power RMS / Max. 40 / 80 Watts Frequency response 100 Hz – 22,000 Hz Impedance 3 Ω Sensitivity 90.0 dB @ 2.83V / 1m 86.0 dB @ 1W / 1m Cone material TW: Mylar M: – W: Injected polypropylene with embedded carbon fibers Crossover Integrated, 6 dB slope Outer diameter 102.4 mm / 4.03″ Installation diameter 93 mm / 3.66″ Installation depth 43 mm / 1.70″