2) KICKER C15 15" 1200W Dual 4-Ohm Car Audio Subwoofers + Dual Sealed Sub Box MAX Power Handling: 600 Watts per sub (1200 Watts per pair) RMS Power Handling: 300 Watts per sub (600 Watt per pair) Designed to match perfectly with a single KICKER mono amplifier Best sounding, loudest bass for the buck Super rigid, injection molded cone with 360 degree back bracing