Rockville RW8CA 8" 600 Watt Low Profile Under-Seat Active Powered Car Subwoofer Rockville RW8CA 600 Watt 8&quot; Active Sealed Slim Car Subwoofer. 600 Watts Peak Power / 150 Watts RMS. PWM MOSFET Power Supply. Low Level RCA Input. High Level Inputs with Auto Turn-On Technology. Adjustable Input Sensitivity. Soft Delayed Remote Turn-On. Thermal Protection Circuit, Short Protection Circuit. Overload Protection Circuit. Phase Switch: 0&deg; or 180&deg;. Low Pass Filter: 50Hz - 150Hz. Bass Boost: 0 - 18dB @ 45Hz. Subwoofer Level Remote Control. Built in Subsonic Filter @ 29Hz. Power Output: 150 Watts RMS Monoblock at 2 Ohms and 1% THD+N. Signal to Noise Ratio: 95 dB. Dynamic Power: 600 Watts @ 2 Ohms. Dimensions: 12.4 x 11 x 2.7 (L x W X H) Inches. Frequency Response: 20Hz - 150Hz. Sensitivity: 100dB @ 1w / 1m.