Power RMS / max. 60 / 120 Watts Frequency response 100 Hz – 25,000 Hz Impedance 4 Ω Efficiency 1 W / 1 m 90 dB Cone material TW: Coated silk dome M: – W: Coated paper Crossover TW: Integrated, 6 dB slope W: Separate, 6 dB slope Outer diameter 119 mm / 4.69″ Installation diameter 80 mm / 3.15″ Installation depth 27 mm / 1.06″ Scope of delivery 2 x Coaxial speaker MATCH UP X4BMW-FRT.2 2 x Inline crossover 1 x Instruction manual