Ground Zero GZUW 10CF

25 cm / 10″ SQ Subwoofer 450 WRMS Rec. amplifier power 300-600 Watts ( rms ) 2 x 2 ohm 50 mm / 2″ copper voice coil Pressed and coated paper cone Audiophile POLYCOT spider Carbon dustcap Enclosure recommendation: Vented enclosure Recommended size: 36L net Port: 1 x 8cm Port length: 21cm Tune frequency: 40 Hz Sealed enclosure Recommended size: 25-50L net Effiency ( SPL ): 86dB FS: 40Hz QTS: 0.52 VAS: 21.4L XMAX: 20 mm Mounting cutout: 236 mm Mounting depth: 148 mm