I've just received my NXG BAS 500. The moment I turn it on and played some music, i started to hear a rattling noise. Like something loose on the driver. The sound is like something vibrating against the cone as the cone moves. After a closer look, I've found out that the very center of the cone, which looks like its glued on top of the surrounding, is poorly glued and can be lift off with my nail. Only 90 degree of the circle is glued and I can lift the remaining 270 degree off a few mm. If i lightly touch it while music is playing the rattling sound disappears.
After hearing good things on how good it is built and how good it sounds it's kinda disappointing to see it fails on something so simple.
Another thing that might not affect the SQ is how badly the center circle is cut. You can see that in the photos. I don't really mind, just want to point out.
Is this a common problem among budget subwoofer? Is it safe to just glue it myself with some super glue?
Edited: The center circle is called a "dust cap"Edited by chanwhk - 10/7/13 at 11:58pm