3 in. Diameter High Temperature 4 Layer Voice Coil Extreme Excursion Motor Structure And Suspension F.E.A Reinforced Paper / Kevlar Cone High Roll Foam Surround Orange Anti-Resonance Heavy Guage Basket Fully Isolated High Excursion Woven Tinsel Leads Poly-Injected Rigid Dustcap Design Custom Tooled Rubber Protective Boot Screw-on Terminals