Lanzar Upgraded 6.5&rdquo; High-Power MidBass - Powerful 500 Watt Peak 105Hz &ndash; 12 kHz Frequency Response 30 Oz Magnet Structure 4 Ohm w/Paper Cone and Foam Surround Full Range Speaker - Opti Pro OPTI6MI 105Hz - 12 kHz FREQUENCY RESPONSE: Lanzar, 6.5 high power performance speaker has 30 oz magnet structure, vas at 9.46 liter and frequency response that complete the package. Also, pack with exceptional 94dB (1w/1m) decibel sensitivity POWERFUL 500 WATTs: This 6.5 full range speaker provide up to 500 watts peak power because it is equipped with 30 oz. housed structure. It's all housed in durable die-cast aluminum frames 4-OHM MIN IMPEDANCE: This midbass car speaker has 4-ohm impedance rating that compensates the undersized wire found in many of todays cars. Includes custom molded grill and hardware for easy setup CCAR 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 OPTI6MI TEMPLATE: Lanzar upgraded car speaker measures 6.97'' in overall diameter with a mounting depth of 3.03''. The high-quality black paper cone accordion cloth surround with resin coated provides a strong foundation