3d print speaker driver project

Hello! I am Vietnamese, I am not good at English so I use google translate. Sorry about this. !!
I started a speaker driver printing project with my own 3d printer, which I built for myself about a year. I had the initial results as well, but I was still not happy about it. I need everyone's suggestions and assistance. And here is my youtube video link:YouTube
YouTube
YouTube
YouTube
YouTube

Here are some images of the versions I have built and modified
 
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