Streetwize pair of 4 100 watt 3 way car speakers attractive mesh grille design heat resistant voice coil 20mm diameter and magnet 153g 54oz midrange 30mm diameter balanced dome ppc pearl poly carbon diaphragm magnetic fluid and strontium magnet 153g 54oz nominal impedance 4ohms maximum music power 100w nominal power 20w sensitivity 86dbwm frequency response 80 20khz weight per speaker including parts 061kg colour black size 410cm