Elac FS 607 X-Jet. Tweeter size: 105 mm, Woofer size: 180 mm. RMS rated power: 400 W, Peak Music Power Output (PMPO): 250 W, Frequency range: 28 - 50000 Hz. Weight: 35000 g. Type: Floor-standing speakers, Dimensions (WxDxH): 290 x 325 x 1099 mm, Audio output channels: 1.0