Sub Woes

 While we were watching a Prime Video TV series last night (at a low volume I hasten to add) during a bass heavy scene, one of my Rel S8/12 was quite happy but the other had a very loud hissy fit, it  frightened the life out of us. I reckon its an amp thing, but to be sure (and safe) I mailed my dealer (who supplied them both) and awaiting a reply. The Sub is only just 2 years old, so well in warranty, and it never gets any loud sounds, and is set up correctly (the dealer did it and has worked with Rel)
Just glad I have the other one to give the amazing sound re enforcement