Quadral Argentum 310 Base. Tweeter size: 25 mm, Mid-range driver size: 135 mm, Woofer size: 135 mm. RMS rated power: 110 W, Peak Music Power Output (PMPO): 160 W, Frequency range: 50 - 45000 Hz. Weight: 6600 g. Type: Bookshelf, Dimensions (WxDxH): 550 x 215 x 168 mm, Audio output channels: 1.0