Alpine SWR-12D2 Owner's Manual (swr-10d4, Swr-10d2, Swr-12d4, Swr-d2) - 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) Airflow Management & Heat Transfer System (US Pat #7,684,585; #6,678,387) Compound Radius Curve Extended Pole Geometry 4 (US Pat #6,639,993) Cast Aluminum Frame with 1.4111011 Integral Shorting Sleeve & Radial Vented Heat Sink (US Pat #7,634,101; #7,272,238; other patents pending) Airflow Optimized Dual Flare Pole Vent Reinforced Cone Neck & Spider Joint -"` ALWA_ Progressive Conex® Spider with Reinforced Layer Tinsel Leads (US Pat #6,810,988) 0 %emir Integrated 8AWG Push Terminals with VC Configuration Jumpers High-Excursion Overhung Voice Coil Configuration High-Grade Strontium Ferrite Segmented Magnet Assembly 65mm Voice Coil with High-Temp 4-Layer DVC Winding on Spiral Cut Black Anodized Al.iminum Former