Feature: Using high temperature resistance, light weight KAPTON voice coil, while providing a strong power output, durable. Designed for the installation of the car environment to ensure that audio directivity, so that the attenuation of high frequency to very low. The use of gradient cross-section, made from high-grade rubber ring, greatly out of the bottom of the distortion, is a more sense of low-frequency, sound more pure. Specification: Type Electromagnetic type (reed) Size (Dx H) Approx. 16.5x 7cm/ 6.5x 2.76 Shape Round Voltage 12 V Directivity 100 Signal To Noise Ratio (SNR)90 d B Rated Power 80 W Rated Impedance 4 Sensitivity 80 d B/ WFrequency Response 25-86 k Hz Application Loud speaker Diaphragm Material Non-paper Composition Coaxial compound Magnetic Circuit Form External magnetic type Frequency Characteristics Midrange frequency Package Included:2 X Car Speakers 2 X Connection Lines 8 X Screws