Ground Zero GZIW 200

Diameter 20 cm / 8? Power Handling (RMS) 150 Watts Impedance 4 Ohms Efficiency 87 dB Power Recommendation 100 ? 200 Watts Voice Coil 38 mm / 1.5? copper Membran HQPP cone with 3D-structure Max. Excursion (Xmax) 20 mm / 0.79? Mounting Ø 182 mm / 7.17? Mounting Depth 100 mm / 3.94? Resonance Frequency (Fs) 32 Hz Overall Qaulity (Qts) 0.44 Equiv. Air Volume (Vas) 23.6 L / 0.83 cu.ft..