Rca Wf-60r 60-Watt Powered Subwoofer Subwoofer in good working condition The subwoofer combines the power of a built-in 60-watt RMS amplifier with a responsive, 8-inch paper cone woofer -- all housed in a tuned-port bass-reflex enclosure to produce tight, floor- rumbling, powerful bass (down to 50 Hz) that you can feel as well as hear! The POWER indicator lets you see at a glance when the subwoofer is operating. Has an adjustable high cut filter and high and low level inputs, making it easy to incorporate into existing systems. It also has these features: Auto On/Off -- automatically switches the PRO-SW60P's amplifier to standby if the subwoofer does not receive a signal for about 11 minutes. Standby Indicator -- lights when the subwoofer is connected to power but not receiving a signal. High Level Input -- lets you connect the subwoofer to an amplifier's or receiver's speaker outputs. Low Level Input -- lets you connect the subwoofer to an amplifier's or receiver's subwoofer out or pre out jacks. These inputs automatically sum left and right channel information. Volume Control -- lets you match the PRO-SW60P's output level to your satellite speakers' output (if used). Frequency HZ -- controls the high frequency cutoff point. Rotated fully clockwise, it cuts high frequencies over 200 Hz. Rotated fully counterclockwise, it cuts high frequencies over 50 Hz. SPECIFICATIONS Amplifier Output .................................................... 60W RMS (4 Ohms @ 10% THD) 50W RMS (4 Ohms @ 1% THD) Crossover ............................................................................. 50 Hz--200 Hz Adjustable Frequency Response .................................................................................. 50--200 Hz Power Voltage .................................................................................... AC 120 V/60 Hz Power Consumption ............................................................................................ 60W