Magnat Quantum 555. Tweeter size: 25 mm, Mid-range driver size: 170 mm, Woofer size: 170 mm. RMS rated power: 160 W, Peak Music Power Output (PMPO): 320 W, Frequency range: 22 - 55000 Hz. Weight: 16200 g. Type: Floor-standing speakers, Dimensions (WxDxH): 215 x 320 x 970 mm, Audio output channels: 2.0