Rockville RVP18W8 1200 Watt 18" Raw Replacement DJ PA Subwoofer 8 Ohm Sub Woofer, 18 inch Rockville RVP18W8 18&quot; 1200 Watt Raw Replacement Subwoofer. Power RMS: 600 Watts. Peak Power: 1200 Watts. Fiber Reinforced Ultra Stiff Paper Composite Cone. Paper Composite Dust Cap. Expanded and Rolled Steel Basket. Accordion Cloth Surround. Ultra Saturated, High BL Magnetic Motor Gap. 3&quot; High Temperature CCAW High SPL Voice Coil. Linear Progressive Conex Spiders. Dual Nickel Plated Banana Plug Terminals. Impedance: 8 Ohms. 90 oz Magnet . Mounting Depth: 7.17&quot; inches. Frequency Response: 26 Hz to 500 Hz. Sensitivity: 101dB @ 1w/1m.