yes, I checked all the screws. I even took the driver out and reset it into the box again, but I noticed that the only way the noise disappeared was when I touched the outer rubber gasket on the driver itself. That caused the vibation noise to go away and made the sub sound much smoother. So I suspect that the driver was bad. Now I am in no way qualified to make that statement.

7.1 theater room
60 fronts vp180 center 4 qs8's ep500 sub

3.0 tv room
m3's vp150 center