Artsound AS150 WE. Tweeter size: 25.4 mm, Woofer size: 76.2 mm. RMS rated power: 56 W, Peak Music Power Output (PMPO): 110 W, Frequency range: 100 - 20000 Hz. Weight: 3.2 kg. Type: In-wall/On-wall/In-ceiling speakers, Dimensions (WxDxH): 135 x 132 x 185 mm, Audio output channels: 2.0