Product details:

Features: RVP18W8 1200 Watt 18 inch Mid-Bass Driver Car Audio Speaker Mid-Range 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 inch 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 inch inches Frequency Response: 26 Hz to 500 Hz Sensitivity: 101d - B @ 1w/1m REVC: 6.8 Ohm FO: 31.672 Hz SD: 1.288 sq - CM BL: 18.769 TM QMS: 5.826 QES: 0.585 QTS: 0.531 NO: 2.055% SPLO: 101 d - B VAS: 390.980 Ltr CMS: 165.907 u - M/N KRM: 9.870 m Ohm ERM: 0.783 MMS: 152.200 g MMD: 125.613 g KXM: 57.704 m Ohm EXM: 0.652 Owners Manual