Dual Cone Speaker Size10 cm Impedance4 Ω Frequency response44 – 25,000 Sensitivity89 dB Lowest resonance frequency124 Hz Maximum power190 W Nominal input power30 W Woofer materialIMPP Composite Cone Voice Coil typeCopper Voice Coil bobbin typeKAPTON MagnetsY35 Weight0.34 kg Cut-out Hole106 mm Mounting Depth43 mm.