Ground Zero GZHW 38XSPL-D1

15″ high quality SPL subwoofer with alumiunum cast basket and reinforced paper cone 15″ high quality SPL subwoofer Klippel® optimized Reinforced paper cone Long stroke compound surround Solid aluminum cast basket 75 mm / 3″ copper voice coil 2-layer Polycot spider IMPP dust cap with 3D structure logo Specifikation Model: High-Quality SPL subwoofer Power Handling (RMS/SPL.): 1500 / 3500 Watts Impedance: 2x 1 Ohms Efficiency: 87 dB Power Recommendation: 1500 – 3500 Watts Voice Coil: 75 mm / 3″ Copper Membran Layout: Reinforced paper Max. Excursion (Xmax): 45 mm / 1.77″ Mounting Ø: 360 mm / 14.17″ Resonance Frequency (Fs): 36.3 Hz Overall Qaulity (Qts): 0.52 Equiv. Air Volume (Vas): 32.8 L / 1.16 cu.ft..