im doing a champs store and they got the exposed ceilings painted and 25 ft or so in a store in a mall in st pete fl. the horn and strobe is dead center of the room in a 4 squ box hung on all thread facing down, from the ceiling. with 4 em lights on the perimeter. i cant find if there is a max height for the h/s i think the em lights is per lamp output.. i asked the gc to see if we could redo the locations to the outside walls at 14 ft. im not going to get it. any clue?