Artsound AS-C100 BE. Tweeter size: 25.4 mm, Woofer size: 101.6 mm. RMS rated power: 40 W, Peak Music Power Output (PMPO): 80 W, Frequency range: 40 - 20000 Hz. Weight: 4 kg. Type: In-wall/On-wall/In-ceiling speakers, Dimensions (WxDxH): 370 x 180 x 155 mm, Audio output channels: 2.0