Konig CMP-SP52. Audio output channels: 5.1, RMS rated power: 30 W, Recommended usage: Home theatre. Satellite speakers RMS power: 15 W, Satellite speaker frequency range: 30 - 20000 Hz. Front speakers RMS power: 3 W. Center speaker RMS power: 3 W. Subwoofer type: Active, Subwoofer RMS power: 15 W, Subwoofer driver size: 101.6 mm (4 ")