Artsound AS40 S. Tweeter size: 25.4 mm, Woofer size: 133.4 mm. RMS rated power: 80 W, Peak Music Power Output (PMPO): 160 W, Frequency range: 60 - 20000 Hz. Weight: 5.75 kg. Type: In-wall/On-wall/In-ceiling speakers, Dimensions (WxDxH): 160 x 138 x 230 mm, Audio output channels: 2.0