So the title pretty much says it. My SW 115 has started rattling. I removed the backplate and held it while running a scene that I noticed the rattle with. There is no rattle unless the backplate is connected/screwed to the body of the sub which makes me think that's where the rattle comes from. But when I shake the backplate (or the sub for that matter) I hear nothing. Will try to get a sound sample later. Bought the sub in Germany so I'd like to avoid having to ship it if I can but the at the same time I have no idea what it could possibly be.
The only thing I can think of is that the sub is simply running too hot. Gain is on 10-11 o clock position and Audyssey set Bass to -10.5 db (normally I try set the gain so that Audyssey sets it to +/-3 db but I forgot and haven't had time yet to remeasure). It only seems to rattle on the very low end.
Any help is appreciated.