5" metal speaker for 70/100V lines, Low-loss transformer 20 / 10W @100V, 20 / 10 / 5W @70V, Frequency response: 110-16000Hz +/- 5dB, Sensitivity: 88dB (1W 1m), Dimensions in mm (Diameter x Depth): 138 x 205, Weight: 2.2 kg, Colour: RAL: 9016. (U Bracket included)