Ok here is an upload of the source file and a new file where you hear the woofer rattle better (i high-passed it a bit). It's even more pronounced irl than on the recordering (recording lol).
I did ensure everything. Nothing is clipping, going hot, no hot signal, and nothing to hear on other systems. Both speakers are doing this. I still suspect it's a design flaw in the kalis. You dont notice it when music is playing because all of the other frequencies are occupied, but when recording bass or kicks or the like its very apparent. I guess its fine for the living room but for music production i can't accept it.
Here is vocaroos of the mp3 files if its easier for you guys:
https://vocaroo.com/1adIy69CMWeU (rattle)
https://vocaroo.com/12qAiGvuiMFY (source)
At this point tho i might just contact
@KaliAudio_Official if i'm bothering you guys too much. It's so sad tho as i really love these monitors and there is no replacement for equal size/performance... Jbl 306 has front ports and hiss, adam t7v has no data, focal alpha evo has a low score, gotta upgrade to neumanns kh80+sub or the like but thats another price class.