Single 4 Ohm Voice Coil. Honeycomb IMPP Composite Cone Structure. Dual Layer Fiber Reinforced Elastic Polymer Surround.Please feel free to send us a message if you have any questions about this item or other items for sale! This item is in the category "Consumer Electronics\Vehicle Electronics & GPS\Car Audio\Car Subwoofers". The seller is "designer_motorsports" and is located in this country: US. This item can be shipped worldwide.