Artsound E5 B. Tweeter size: 25.4 mm, Woofer size: 127 mm. RMS rated power: 70 W, Peak Music Power Output (PMPO): 140 W, Frequency range: 60 - 20000 Hz. Weight: 10.9 kg. Type: In-wall/On-wall/In-ceiling speakers, Dimensions (WxDxH): 180 x 255 x 355 mm, Audio output channels: 2.0