The LA1428M is a 400W passive line array full-frequency loudspeaker, featuring a rated power of 400W and an impedance of 16Ω. It comprises driver units of 8"x2 and 1.75"x1, delivering a maximum SPL of 124±2dB and a sensitivity of 98±2dB. Operating within a frequency response range of 70Hz to 20kHz, its dimensions measure 232x643x385mm, offering a coverage angle of 120°x20° and weighing 16kg.