Features High Efficiency Paper Cone Bi- Ribbed Cloth Surround 6 dB High Pass Capacitors Included two Tweeters Specifications Structure 6.5" (16.5cm) Dual Component Max Power 500 Watts Nominal Power 225 Watts Frequency Response 155Hz - 18KHz Impedance 4Ω Sensitivity 99.3 dB Description "Unleash the Power of Perfection with DB Drive's PRO6K4M!"Experience the pinnacle of audio excellence with the DB Drive PRO6K4M 6in Pro Audio Component Speaker Kit. Crafted with precision and packed with powerful f