Hello, thanks for reading. I work in a large 3 form entry primary school. We have 3 halls which I use for rehearsals and concerts, but only 1 of them is large enough for our main, larger-scale performances / assemblies / shows / concerts. Unfortuantely, the large hall was built with P.E and school dinners in mind and as such has been built /lined with materials which deaden sound. Therefore, when I rehearse a large group of children singing in the smaller halls (traditional, old, echoey school halls), they sound fabulous.... but then I put them up on the stage in the big hall and it's all horribly disappointing with a very flat, dead sound. It's such a shame! We have a PA system with 4 not very good mics (often unbalanced with each other - but we can make do with them for soloists) and we have a couple of floor stage mics too which don't seem to make a whole lot of difference. I need something that is going to lift and amplify the general sound on the stage of up to 180 children singing / playing! What are my options and where can I go to find out more information about this? I don't think we can have permanent hanging mics, as they will be knocked by the balls in P.E lessons! (The stage isn't a built in stage - it's one made of those platforms all locked together). I realise and accept that any option (if I have any!) is going to cost a fair bit of money. I'm hoping somebody can point me in the right direction... Many thanks!