Artsound FL501. System type: single speaker, Speaker placement: In-wall/in-ceiling, Tweeter size: 12.7 mm (0.5 "). RMS rated power: 35 W, Peak Music Power Output (PMPO): 70 W, Frequency range: 85 - 20000 Hz. Connectivity technology: Wired. Depth: 70 mm, Diameter: 175 mm. Type: In-wall/On-wall/In-ceiling speakers, Audio output channels: 1.0, Power source type: AC