I don't have much Experience with Ear issues as a DJ, but from my Drag Racing days and as a Diver I have alot of Experience.
The Ear Drum is a Muscle just like any other it can be worked on. When I was Racing whether it was my Supercharged B18C Honda, or a Top Fuel Dragster, I'm able to get with in a few feet of the exhaust headers (the flames that shoot out keep me away more then the noise lol). And Even Now I can stand right next to the Monitors and have Heavy Bass blasting me and not even blink, walk outside where its quite and Hear fine.
As for Diving we deal water pressure acting on our Ears. What I suggest to my Student who have problems is a weeks before diving again to work on their ears by "popping" then (Hold your Nose and Blow). Now obviously that probably won't help with Sound, but that's just my point of how the Ear is a Muscle.
Hope that helps alittle
Bookmarks