B&W CM1. System type: 2.0 system, Recommended usage: speaker set unit, Speaker placement: Floor. RMS rated power: 100 W, Frequency range: 55 - 22000 Hz, Impedance: 8 Ом. Amplifier output power: 30 W. Connectivity technology: Wired, Speaker interface type: Terminal. Width: 165 mm, Depth (with stand): 276 mm, Height: 280 mm