I work at a semi-professional theatre. That being said, what do you do when a 'semi-professional' volunteer blows your mains? We are doing the show Into The Woods and during tech week one of the sound guys was testing an effects processor to make a giant's voice. The voice they were using was very distorted and there is no compressor on the system. We heard them testing it while we were in the lobby and ran in there and told them to turn it down because we could hear the speakers distorting. The reply was "we have it set so it won't peak". Well the next day we came in and we couldn't get the main cluster to work. Only the left and right side speakers and monitors. Today we had a professional sound engineer come in who we have worked with before and he got them to work but it sounded terrible. He said that the diaphrams in the horns were blown. I know that in the cluster (which is concealed) There are 2 big independent horns and a main cabinet. Which do you think we should troubleshoot first? He said he thought they were probably no larger than 1" and would probably cost around $30. each. We were going to call the contracting company that installed the system back in '95 but he said they would probably over-charge. If we can get to them he said he would fix them for free with the right parts. The diaphrams he suggested were by JBL. Where do you think we should go from here? By the way, if my terminology is incorrect, it's because I'm a lighting designer.