B&W CM8. System type: 2.0 system, Recommended usage: speaker set unit, Speaker placement: Floor. RMS rated power: 150 W, Frequency range: 43 - 50000 Hz, Impedance: 8 Ом. Amplifier output power: 150 W. Connectivity technology: Wired, Speaker interface type: Terminal. Width: 165 mm, Depth: 277 mm, Height: 960 mm