While we're on this subject, is there any truth to full-helmets "ringing" like a goddamn bell when they get hit?
Further than that, if we're going to be going whole-hog on helmets, then regardless of whether that's a thing that actually happens or not, a helmet made of a metalic material should ring when you're hit in the head and have a chance to cause confusion.
Or at least print a message. Pretty sure getting hit in the head can cause confusion in the first place. And memory loss too!
Alternatively it could be restricted to a unique variant of Valpurus striking you with a hammer for bothering him, triggered only while wearing a metal full helm.
"Valpurus smites you with a small hammer, causing your helmet to ring like a church bell!"
No it doesn't - usually the helmet has a lot of padding to help dissipate the blow. A blow to the head will still make your head spin momentarily, not for the impact or the loud clang but for the sudden acceleration and mild concussion caused by your brain bumping to the inside of your skull, so the confusion is real. I've got 1st hand experience on this. =P I would still do the Valpurus effect for the humor factor - we shouldn't let realism get in the way of a good joke!
Thought about this some more. I don't think it actually makes any sense. The Enner's awful voice doesn't hurt you because you hear it, it hurts you because it's awful. Otherwise it wouldn't be smashing your gear. You could be deaf and still die from the Enner.
I thought about that too. The damage is caused by his singing being too loud and the flesh rendering resonance of the notes (full body damage) in which case it should effect your whole body, as you said. If it was just bad singing sticking carrots into your ears should suffice as a precaution to close in, which is not the case.