Teufel Columa 250 Set L. Audio output channels: 5.1, Recommended usage: Home theatre. Satellite speaker type: 2-way, Satellite speaker frequency range: 120 - 20000 Hz, Satellite speaker impedance: 8 Ом. Center speaker type: 2-way, Center speaker frequency range: 120 - 20000 Hz, Center speaker impedance: 8 Ом. Subwoofer type: active, Subwoofer driver size: 200.7 mm (7.9 "). Power source: AC, AC input voltage: 230 V, AC input frequency: 50 Hz