(The feeling is is subjective, but it is very hard to describe technically.) I have a speaker with very strong bass, which is fine, but when I play music with with it, even in **extremely low** volume, it feels as if something gets stuck in my ear, and it is hard to tolerate. It causes headache.

In a real concert (classical or pop or whatever), the sound could be 10 times louder, without any discomfort.

I presume this speaker is designed for people who prefer that (is that heavy-metal??) feeling. 

I am trying to understand what's going on here. Questions:

 1. How does a speaker manage to create such an impact, making your head resonate, at a **low** volume?
 2. Adjusting the balance of high and low frequencies doe not help at all. I need to make the bass barely audible to alleviate the discomfort. That's strange. What is going on?
 3. Obviously, the answer to "how to improve this" is "to buy a new speaker". Are there any other ways to change this?