Mode Com MC-HF40. Tweeter size: 19 mm (0.75 "), Woofer size: 133.3 mm (5.25 "). RMS rated power: 40 W, Signal-to-Noise Ratio (SNR): 65 dB, Total Harmonic Distortion (THD): 4 %. Weight: 7800 g. Audio output channels: 2.0, Surround speaker dimensions (WxHxD): 118 x 215 x 276 mm, Material: MDF