Artsound MDC6. Woofer size: 127 mm. RMS rated power: 30 W, Peak Music Power Output (PMPO): 60 W, Frequency range: 102 - 20000 Hz. Weight: 1 kg. Type: In-wall/On-wall/In-ceiling speakers, Dimensions (WxDxH): 155 x 50 x 155 mm, Audio output channels: 2.0