I had finished my driver's door and all was good. I went to my passenger's door, disassembled it, installed Dynamat, new speaker, and then put door back together. All seemed good as before. I closed the door and heard a sound I would call "a vibrating clunk". I instantly thought "FUCK!". So I took the door apart again and checked the speaker. It didn't seem to be loose or anything and I installed a pair of 6.5's (or 6.75's) so there was no issue with depth. I removed the speakers and just left the Dynamat there. I closed the door with every thing off of it except the Dynamat. The vibrating clunk sound was still there. This happened even when I closed the door lightly.
I'm wondering if anyone knows something that may be the problem. I never ride on my passenger side so I do not know if the problem was there before I tried to put the speakers in there.
Thanks.
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Old Car: '03 Toyota Camry LE
New Car: '04 Black ES330 (Aftermarket sound/navigation system installed)

Always got something else in mind...