Ground Zero GZNW 30XMAX-II
Type High-Performance Low-Bass-Subwoofer Diameter 30 cm / 12? Power handling (RMS) 3000 Watts Impedance 2x 1 Ohm Efficiency 83 dB Power recommendation 2000 – 4000 Watts Voice coil 75 mm / 3? CCA Cone Aluminum Max. excursion (Xmax) 60 mm / 2.36? Mounting Ø 282 mm / 11.10? Mounting depth 250 mm / 9.84? Resonance frequency (Fs) 35.6 Hz Damping ratio (Qts) 0.61 Equiv. air volume (Vas) 13.6 L / 0.48 cu.ft.