SUBWOOFER GROUND ZERO GZIW12XSPL-D2 300MM

12″ high quality SPL subwoofer with reinforced paper cone 12″ SPL subwoofer Klippel® optimized Reinforced paper cone with 3D honeycomb structure Long stroke compound surround Resonance free GZ steel basket 63 mm / 2.5″ copper voice coil 2-layer Polycot-Conex spider IMPP dust cap with 3D structure logo Model High-Quality SPL subwoofer Diameter 30 cm / 12″ Power handling (RMS/SPL) 600 / 1000 Watts Impedance 2x 2 Ohms Efficiency 86 dB Power recommendation 500 – 1000 Watts Voice coil 63 mm / 2.5″ Copper Cone Reinforced paper with honeycomb structure Max. Excursion (Xmax) 34 mm / 1.34″ Mounting Ø 285 mm / 11.22″ Mounting depth 162 mm / 6.38″ Resonance frequency (Fs) 32.5 Hz Overall quality (Qts) 0.73 Equiv. air volume (Vas) 40.4 L / 1.43 cu.ft.