I also had an acoustic shock 4.5 years ago and I recovered after 2 years. I was good for 2.5 years but now I'm having a setback after going to a bar. I'm afraid it will take 2 years to recover again. I have a tight stiff injured feeling in my ear.If it helps, I suffered an acoustic shock and am now much better. It just takes a very very long time. Almost 2 long horrible years in my case.
Cheers,
Shaun.
What were your symptoms? When did you start feeling better?