Artsound AS30 S. Tweeter size: 25.4 mm, Woofer size: 88.9 mm. RMS rated power: 50 W, Peak Music Power Output (PMPO): 100 W, Frequency range: 100 - 20000 Hz. Weight: 3.2 kg. Type: In-wall/On-wall/In-ceiling speakers, Dimensions (WxDxH): 120 x 120 x 185 mm, Audio output channels: 2.0