Total System Power: 120 Watts RMs Treble Speaker Power: 20W x 3 RMS Speaker Power: 60 Watts RMS Product Dimensions (mm) W x H x D: 280 x 353 x 337.5 subwooterspeakei: one way Speaker size: 8 inches Resistance: 4 ohms Frequency: 20 Hz - 170 Hz Satellite speaker: 3 ways Speaker size: 3 inch * 4 Impedance: 8 ohms Frequency range: 120 Hz - 20 kHz Speaker size: 8 inches Resistance: 4 ohms Frequency: 20 Hz - 170 Hz