Edifier R1280DB. RMS rated power: 42 W, Recommended usage: Universal, Product colour: Black. Signal-to-Noise Ratio (SNR): 85 dB. Center speaker frequency range: 55 - 20000 Hz, Center speaker tweeter diameter: 33 cm (13"), Center speaker mid-range driver diameter: 2.95 m (116"). Width: 146.1 mm, Depth: 177.8 mm, Height: 228.6 mm