Yamaha NS-F150. System type: 2.0 system, Speaker placement: Floor, Tweeter size: 25.4 mm (1 "). RMS rated power: 180 W, Frequency range: 37 - 30000 Hz, Impedance: 6 Ом. Connectivity technology: Wired, Speaker interface type: Terminal. Width: 200 mm, Depth: 362 mm, Height: 1030 mm