Middle level speaker, suitable for the school auditorium, outdoor play ground, multi-function room, meeting room [Nominal Impedance]: 8 [Rated Power]: 350 [Peak Power]: 1400 [Frequency Response]: 55-18k [Sensitivity]: 99 [Maximum SPL]: 120 [Dispersion]: H90xV40 (WHD)[Dimension]: 430*715*425 (kg)[Weight]: 15"full Frequency Speaker