Yamaha NS-PC210, 5.0 channels, 600 W, Black, 120 W, 6 Ω, 50 - 45000 Hz Yamaha NS-PC210. Audio output channels: 5.0 channels, RMS rated power: 600 W, Product colour: Black. Satellite speakers RMS power: 120 W, Satellite speaker impedance: 6 Ω. Center speaker frequency range: 50 - 45000 Hz, Center speaker impedance: 6 Ω, Center speaker dimensions (WxDxH): 236 x 236 x 1050 mm