Hi, At my high school we are planning on doing a whole school event out on the oval (Basically a big field about 500ft by 175ft. it what we call it in Australia) We have about 2500 students and we need a sound system to cover a goof 75% of the field. I was thinking 10 normal powered speakers place around the field but if we had to pack up suddenly (like if it was about to rain) it would be a pain. We don't have the money for a line array system so our budget is about $7000 max including a way to hang or mount it. If anyone could suggest something it would be a life saver.