Microlab FC20 40 Watt Subwoofer Stereo Speaker w/ Digital Signal Processor (DSP) and Rotating RF Remote Control Output Power: 40 Watt RMS Power Distribution: 2x 10 Watt + 20 Watt RMS Frequency Response: 50 Hz - 18 kHz Speakers: 2.5-Inch Tweeter Drive Type and 5-Inch Woofer Driver Type Interfaces: 2RCA(output), 3.5 mm stereo (inout)