Artsound FL620. System type: single speaker, Speaker placement: In-wall/in-ceiling, Tweeter size: 12.7 mm (0.5 "). RMS rated power: 40 W, Peak Music Power Output (PMPO): 80 W, Frequency range: 63 - 20000 Hz. Connectivity technology: Wired. Depth: 75 mm, Diameter: 205 mm, Weight: 1.75 kg. Type: In-wall/On-wall/In-ceiling speakers, Audio output channels: 1.0, Power source type: AC