Designed for high power applications in PA speaker mains, DJ touring speakers, sub-woofers and bass guitar systems. The magnet motor structure is all new and designed with a back plate and pole piece which are forged from a single massive block of low carbon steel. Utilizing an extended pole piece beyond the front plate improves magnetic linearity and voice coil cooling. 12" Pro Dj Subwoofer Power Handling:600 Watts Program: 300 Watts Rms: 150 Watts Impedance: 8 Ohms Paper Cone Woofer Treated Cloth Surround 40 oz. Magnet 140mm x 20mm Motor Structure Ultra-Saturated, High Bl Magnetic Motor Gap 2.5“High Temperature 4-Layer High SPL Voice Coil Impedance: 8 Ohms Mounting Depth: 6.22" Inches Frequency Response: 20 Hz to 1000 Hz Sensitivity: 103db Sold in Singles