Ground Zero Hydrogen GZHW 25-D1

- Model High-Performance Subwoofer - Diameter 25 cm / 10? - Power handling (RMS/SPL) 1200 / 2500 Watts - Impedance 2 x 1 Ohms - Efficiency 83 dB - Power recommendation 800 ? 2500 Watt - Voice coil 63 mm / 2.5? Copper - Cone Reinforced paper - Max. Excursion (Xmax) 45 mm / 1.77? - Mounting Ø 238 mm / 9.37? - Mounting depth 178 mm / 7.01? - Resonance frequency (Fs) 41.8 Hz - Overall quality (Qts) 0.487 - Equiv. air volume (Vas) 8.53 L / 0.30 cu.ft.