Black Steel Basket Non-Press Paper Cone Specially Treated Foam Surround 2'' 4 Layer Dual Voice Coil Dual 4 Ohm Impedance 60 OZ Magnet 800 Watts RMS / 1600 Watts Max Power SPL: 90 dB Spring Loaded Push Down Speaker Terminals Dimensions: 12.2'' (Diameter) x 5.1'' (Depth) Sold as : Unit Pyle PLPW12D 12" 1600 Watts Dual 4 Ohm Subwoofer Speaker