KEF KHT2005.3. Audio output channels: 5.1, Recommended usage: Home theatre. Acoustic amplification: 88 dB. Satellite speaker type: 2-way, Satellite speakers RMS power: 100 W, Satellite speaker frequency range: 80 - 27000 Hz. Center speaker type: 2-way, Center speaker RMS power: 100 W, Center speaker frequency range: 80 - 27000 Hz. Subwoofer type: Active, Subwoofer driver size: 254 mm (10 ")