HQ Power Professional speaker 450W. System type: 1.0 system, Speaker placement: Floor, Wall-mountable, In-wall/in-ceiling, Tweeter size: 76.2 mm (3 "). RMS rated power: 450 W, Frequency range: 45 - 18000 Hz, Impedance: 8 Ом. Connectivity technology: Wired, Speaker interface type: 6.3 mm. Width: 480 mm, Depth: 410 mm, Height: 780 mm. Audio output channels: 1.0