Yamaha NSP41, 5.1 channels, Home theatre, Black, 2-way, 100 W, 28 - 25000 Hz Yamaha NSP41. Audio output channels: 5.1 channels, Recommended usage: Home theatre, Product color: Black. Satellite speaker type: 2-way, Satellite speakers RMS power: 100 W, Satellite speaker frequency range: 28 - 25000 Hz. Front speakers RMS power: 30 W, Front speaker peak power: 100 W, Front speaker sensitivity: 83 dB. Center speaker RMS power: 30 W, Center speaker peak power: 100 W, Center speaker sensitivity: 84 dB. Subwoofer RMS power: 100 W, Subwoofer frequency range: 28 - 200 Hz, Subwoofer impedance: 5 Ω