2700 Watts Max/1500 Watts RMS Cloth/Paper Composite Sandwich Cone with Polypropylene Surfacewith Aluminum Reinforcement Fins with Aluminum Dust Cap Blue Cast Aluminum Basket with Diamond Cut Accents Nickel Plated 8 Ga. Compression Wire Terminals Large UV Protected Polyether Foam Surround Dual Conex SpidersDual 2 Ohm Voice coils2.5"; 4-Layer Coil on Aluminum Former340 Oz. Strontium Ferrite Magnets (Dual Stacked)Enclosure Specs:Sealed 1.0 Cu. Ft.Ported 2.0 Cu. Ft. ; Port Size 4"; x 12";Mounting Depth: 6.875";Weight: 26 lbs.