Hey, guys & gals. I was running sound for my new band last night and I noticed that the horn in one of my B-52 ACT 1515X had gone missing. I have no idea when it happened or how it happened, but as soon as I fired them up last night, it was obvious. So, I haven't popped the grill off yet to take a look, but I'm getting advice first. I'm completely incompetent when it comes to this stuff, but the only reliable shop in town generally runs a two week wait and I've got gigs coming up. Does anyone have any experience with these speakers? They are active towers with 2 15's and a "titanium compression driver." What are the likely suspects? Is there something on the back panel I should check? Is the high frequency driver something I could replace on my own? Where would I find parts? As you can tell, I'm completely lost, but I figured I'd try this route first. Thanks!