Teufel Ultima 20. System type: 2.0 system, Speaker placement: Floor, Tabletop/bookshelf, Wall-mountable, Tweeter size: 25 mm. RMS rated power: 160 W, Impedance: 4 Ом, Sensitivity: 83 dB. Connectivity technology: Wired, Speaker interface type: Banana. Housing material: MDF. Width: 215 mm, Depth: 240 mm, Height: 330 mm