Alpine SWS-12D4 Sws-10d2, Sws-10d4, Sws-12d2, Sws-12d4, Sws-15d4, Sws-15d2 Own - Page 4

High Amplitude Multi-Roll Santoprene® Surround (Patent Pending) Reinforced Parabolic Cone Structure with Poly-Mica Dust Cap & Pulp-Kevlar Cone Body Concealed Mount Gasket (Integrated Grille System Ready, US Pat #7,760,900) High Strength Steel Frame Perimeter Venting with Airflow Management System (US Pat #7,684,585) High-Excursion Underhung Voice Coil Configuration Compound Radius Curve Extended Pole Geometry (US Pat #6,639,993) 4:0 Progressive Conex® Spider with Reinforced Layer Tinsel Leads (US Pat #6,810,988) 8AWG Push Terminals with VC Configuration Jumpers High-Grade Strontium Ferrite Magnets Dual Flare Pole Vent with Airflow Back Plate 65mm Voice coil with High-Temp DVC Winding on Spiral Cut Aluminum former (D4 = 6-layer, D2 = Split 5-Layer) }