Entry level speaker, suitable for the places which have no high tone request, such like school auditorium or outdoor play ground

Two outlooks optional

[Nominal Impedance]:    4[Rated Power]:          700[Peak Power]:           2800[Frequency Response]:   50-18[Sensitivity]:            101[Maximum SPL]:        125[Dispersion]:             H80xV80(WHD)[Dimension]:           510*1200*470(kg)[Weight]:

Dual 15" Full frequency speaker