SICA 18PF4 – Subwoofer 18” 😯 2400W – Made in Italy• 4” Sandwich voice coil Fiberglass former • Double Cross Konex Spider (DCS) with Progressive Waves • Triple Roll Cloth surround • Total Waterproof Cone Treatment • High Excursion Ferrite Magnet Circuit • Ventilated Magnet and Voice Coil to reduce Power Compression • 96.3 dB sensitivity • Frequency Range 35-700 Hz