Ground Zero Hydrogen GZHW 16-D2

Model High-Performance Subwoofer Diameter 16 cm / 6.3” Power handling (RMS/SPL) 500 / 1000 Watt Impedance 2x 2 Ohms Efficiency 81 dB Power recommendation 400 – 1000 Watt Voice coil 50 mm / 2” copper Cone Reinforced paper Max. Excursion (Xmax)) 30 mm / 1.18” Mounting cut out Ø 153 mm / 6.02” Mounting depth 110 mm / 4.33” Resonance frequency (Fs) 51 Hz Damping ratio (Qts) 0.46 Equiv. air volume (Vas) 2.8 L / 0.10 cu.ft.