20 feet off the floor. NO scaffolding! Just two pieces of angle iron welded to the screen frame at right angles. Two pieces of metal grating laid across those and the 10 foot tall, 3 way speaker stack sitting on top of that catwalk. No ladders and only enough room to squeeze the horn in the space. In fact they had to cut holes in the insulation to fit them in!

We had to replace all three mids in one and two mids and a high in another! Then about a month later, had to do it all over again when they blew up a second time.

I did find out that the crossover was programmed incorrectly, sending the wrong frequencies to the horns. I fixed that, realigned the B-Chain and lowered the master gain inside the processor (so the kids couldn't turn it up too loud.) Didn't have any more trouble out of those houses.