We have a small theater (holds about 100) with a 35' wide by about 12' high stage and want to mount Peavey speakers either side of the stage - in line with the proscenium. We would like to know how far down we should tilt them? We can't find any real authoritive article on the subject which we would prefer because we have several groups arguing about the (such a silly) topic. Can anyone point us to a manufactures site, book or article we can use to tilt our speakers and support the angle we chose.