Scandyna The Drop. System type: 2.0 system, Recommended usage: speaker set unit, Speaker placement: Celing-mountable, Tabletop/bookshelf. Frequency range: 50 - 22000 Hz, Impedance: 4 Ом, Sensitivity: 89 dB. Recommended amplifier power (max): 10 W, Recommended amplifier power (min): 100 W. Connectivity technology: Wired. Width: 215 mm, Depth: 170 mm, Height: 437 mm