Ground Zero GZHW 20XSPL-D1

8″ high quality SPL subwoofer with alumiunum cast basket and reinforced paper cone 8″ high quality SPL subwoofer Klippel® optimized Reinforced paper cone Long stroke compound surround Solid aluminum cast basket 63 mm / 2.5″ copper voice coil 2-layer Polycot spider IMPP dust cap with 3D structure logo 8″ subwoofer 2x1 ohm voice coils 2.5″ copper voice coil Mounting diameter 187 mm Mounting depth 145 mm Aluminium cast basket Klippel optimized triple magnets Cone Reinforced paper Power Handling 700 W RMS, 1500 W SPL Power Sensitivity 80 dB Xmax 40 mm Fs 38.3 Hz Qts 0.381 Vas 4.77 L.