Kicker CS speaker package - Two pairs of Kicker CS Series 6-3/4 Inch Coaxial 40CS674 Peak: 600 watts per pair / 300 watts each RMS: 200 watts per pair / 100 watts each EVC (Extended Voice Coil) technology for high thermal handling Durable, Ribbed UV-Treated Polyester Foam speaker surround for precise linear excursion Frequency response: 40-20,000 Hz