Elac BS 63. Woofer: 1x 175mm, Tweeter size: 25 mm, Woofer size: 60 mm. RMS rated power: 60 W, Peak Music Power Output (PMPO): 80 W, Frequency range: 44 - 25000 Hz. Width: 205 mm, Depth: 265 mm, Height: 330 mm. Type: Bookshelf