Philips SPA2310 Multimedia Speaker 2.1, 2.1 channels, 22 W, Universal, Black, Silver, Wired, 1.6 m Philips SPA2310 Multimedia Speaker 2.1. Audio output channels: 2.1 channels, RMS rated power: 22 W, Recommended usage: Universal. Satellite speaker type: 1-way, Satellite speakers RMS power: 10 W, Satellite speaker woofer diameter (imperial): 6.35 cm (2.5"). Subwoofer RMS power: 12 W, Subwoofer driver diameter (imperial): 13.3 cm (5.25"). Power source: AC, AC input voltage: 220 V, AC input frequency: 50 Hz. Cables included: Audio (3.5mm)