Ground Zero GZIW 165

Diameter 16.5 cm / 6.50″ Power Handling (RMS) 100 Watts Impedance 4 Ohms Efficiency 85.5 dB Power Recommendation 60 – 150 Watts Voice Coil 38 mm / 1.5″ copper Membran HQPP cone with 3D-structure Max. Excursion (Xmax) 10 mm / 0.39″ Mounting Ø 147 mm / 5.79″ Resonance Frequency (Fs) 41 Hz Overall Qaulity (Qts) 0.41 Equiv. Air Volume (Vas) 9.1 L / 0.32 cu.ft..