Quadral Argentum 370. Tweeter size: 25 mm, Mid-range driver size: 170 mm, Woofer size: 170 mm. RMS rated power: 100 W, Peak Music Power Output (PMPO): 150 W, Frequency range: 30 - 45000 Hz. Weight: 13950 g. Type: Floor-standing speakers, Dimensions (WxDxH): 185 x 290 x 960 mm, Audio output channels: 2.0