5" metal speaker for 70/100V lines with fire protection, Low-loss transformer 6 / 3 / 1,5 / 0,75 / 0,25W @ 100V, 3 / 1,5 / 0,75 / 0,25 / 0,125W @ 70V. Frequency response: 120-18000Hz +/- 5dB, Sensitivity: 90dB (1W 1m), Dimensions in mm (Length x Width x Depth): 185 x 185 x 72, Weight: 1.7 kg, Colour: RAL:9016.