Lanzar Upgraded Opti-Drive Pro 6.5&rdquo; High Power - 1000 Watt Peak 180Hz &ndash; 22 kHz Frequency Response 75 Oz Magnet Structure and 4 Ohm Mid-Bass w/Compression Horn Tweeter Full Range Speaker - OPTI6HPRO4 180Hz - 22 kHz FREQUENCY RESPONSE: Lanzar, opti-drive pro 6.5 high power speaker has 75 oz super strontium ferrite magnet structure, 94 dB and frequency response that complete the package. Also, pack with 1'' horn loaded compression tweeter POWERFUL 1000 WATTS: This 6.5 full range speaker provide up to 1000 watts peak power because it is equipped with 75 oz. housed structure. It's all housed in an accordion cloth surround with resin coated and heavy duty stamped metal basket 4-OHM MIN IMPEDANCE: This mid bass car speaker has 4-ohm impedance rating that compensates the undersized wire found in many of todays cars. Includes custom wire-mesh grills, wires and installation hardware for easy setup CCAW VOICE COIL: Lanzar speakers are capable of 1.5 higher or elevated temperature strength and fatigue properties. It will increase performance and efficiency of heavy-duty play time through lower weight and higher operating temperatures OPTI6HPRO4 TEMPLATE: Lanzar upgraded car speaker measures 6.85'' overall diameter with a mounting depth of 2.95''. The high-quality black paper cone accordion cloth surround with resin coated provides a strong foundation