Model Car specific midrange speaker Diameter 200 mm / 8″ Power handling (RMS/max.) 80 / 120 Watts Impedance 3 Ohms Efficiency 89 dB Frequency Response 40 Hz – 4.5 kHz Voice coil 38 mm / 1.5″ copper Cone Reinforced paper Mounting Ø 180 mm / 7.10″ Mounting depth 70 mm / 2.76″ Resonance frequency (Fs) 48 Hz Damping ratio (Qts) 0.61 Equiv. air volume (Vas) 30.3 L / 1.01 ft³