Ground Zero GZRW 8XSPL

Diameter 20 cm / 8? Power Handling (RMS/SPL.) 500 / 1000 Watts Impedance 2x 2 Ohms Efficiency 84.6 dB Power Recommendation 400 ? 1000 Watts Voice Coil 50 mm / 2? copper Max. Excursion (Xmax) 22 mm / 0.866? Mounting Ø 182 mm / 7.17? Mounting Depth 133 mm / 5.24? Resonance Frequency (Fs) 45.8 Hz Overall Qaulity (Qts) 0.36 Equiv. Air Volume (Vas) 7.4 L / 0.26 cu.ft..