Features: 1.PERFECT BLEND: Car loudspeaker is the perfect blend of loud speakers and high powered drivers. It ultimately reduces distortion, so you can enjoy crisp, clear sound. 2.HEAT DISSIPATION: Car speaker has a premium voice coil that can handle extreme heat and maintain its structural integrity for a long life. Advanced voice coil heatsink design for better heat dissipation. 3.HIGH SENSITIVITY: Coaxial car loudspeaker has 91dB sensitivity and a 4 ohm impedance rating to compensate for the undersized wires in many of today's cars. 4.500W: The mid and high 6.5 inch coaxial car speaker package system has a maximum peak power output of 500W, so you can play your favorite tunes as often as you like and with style. 5.30HZ TO 30KHZ: With a frequency response of 30Hz to 30KHz, the Coaxial car speaker completes your current car speaker system with full stereo reproduction. specification:Item Type: Car Loudspeaker Material: Magnet, Metallic Iron Model: PL 1648 Rated Power: 100Wx2 Maximum Power: 500Wx2 Impedance: 4 Sensitivity: 91dB Frequency Range: 30Hz to 30KHz Range of Application: Suitable for All Car Sound Systems PackageList: 2 xSpeaker 2 x Speaker Panel 8 x Screws