Two-way loudspeaker 50 W RMS, 100 V and low impedance (8 ohm). Power selection at 50, 25, 12.5 and 6.25 W. Complies with voice alarm standards EN 54-24 and BS-5839, part 8. Frequency response from 53 to 20,300 Hz. Sensitivity 88 dB (1 W, 1 m and 1 kHz). Maximum acoustic pressure 105 dB (50 W, 1 m and 1 kHz). Box dimensions 330 x 205 x 192 mm, weight 3.65 kg. Degree of protection IP65.