Another thought for consideration is that a good sub, properly calibrated, does not give you the boom, boom effect you described. Except for maybe in cases where it is to be expected, like explosions in movies or music where it has been mixed in that way on purpose, to be over exaggerated.
While it can't be universally said, folks who consistently have the 'boom' effect are often running thier subs way hot. I'd say way 'too' hot but if that is what they enjoy, then great for them. Happiness is the key.
