I am one of those guys unfortunate enough to blow all 4 cones of a BA410.
I initially thought that the speaker grill was rattling - I had taken the badges off as I prefer a clean look to my gear.
I kept stuffing beer mats along the edges of the grill but it wouldn't stop.
By the third gig, all 4 cones had broken and I had to play the last 20 minutes with fart & tweeter.
BUT - - -
I emailed Behringer about it and they sent me out a brand new one within a couple of days! I can't imagine any other company doing this (if there are then let me know) they didn't need proof or anything. Maybe the panic in my email was enough.
So this put me off Behringer gear.
