Artsound AS40T S. System type: 2.0 system, Speaker placement: Wall-mountable, Tweeter size: 25.4 mm (1 "). RMS rated power: 30 W, Frequency range: 60 - 20000 Hz, Sensitivity: 87 dB. Connectivity technology: Wired. Housing material: ABS synthetics. Width: 160 mm, Depth: 140 mm, Height: 230 mm