Teufel Columa 300 Set M. Audio output channels: 5.1, Recommended usage: Home theatre. Satellite speaker type: 1-way, Satellite speakers RMS power: 100 W, Satellite speaker frequency range: 140 - 22000 Hz. Center speaker RMS power: 100 W, Center speaker frequency range: 140 - 22000 Hz, Center speaker impedance: 4 Ом. Subwoofer RMS power: 180 W. Power source: AC