Ground Zero Hydrogen GZHW 20-D2

GROUND ZERO HYDROGEN series meet the requirements of even the most demanding customers. All models are characterized by an astonishing performance, great sound quality and extremely high sound pressure whenever required. These subwoofers have been developed to handle a huge amount of input power reaching extremely high bass levels to be used successfully even under competition conditions but also for everyday music reproduction. Model High-Performance Subwoofer Diameter 20 cm / 8″ Power handling (RMS/SPL) 700 / 1500 Watts Impedance 2x 2 Ohms Efficiency 80 dB Power recommendation 50 – 1500 Watts Voice coil 63 mm / 2.5″ Copper Cone Reinforced paper Max. Excursion (Xmax) 40 mm / 1.57″ Mounting Ø 187 mm / 7.36″ Mounting depth 145 mm / 5.71″ Resonance frequency (Fs) 38.3 Hz Overall quality (Qts) 0.381 Equiv. air volume (Vas) 4.77 L / 0.17 cu.ft.