Elac FS 58. Woofer: 2x 175mm, Tweeter size: 25 mm, Mid-range driver size: 130 mm. RMS rated power: 100 W, Peak Music Power Output (PMPO): 140 W, Frequency range: 40 - 2300 Hz. Width: 250 mm, Depth: 335 mm, Height: 1080 mm. Type: Floor-standing speakers