50mm Speakerbox

I've created this speakerbox for this driver:
https://www.aliexpress.com/item/1005005997414703.html?pdp_npi=4%40dis%21EUR%21%E2%82%AC%2010%2C11%21%E2%82%AC%200%2C99%21%21%2177.02%217.54%21%402103835e17092802212921168ee8e8%2112000035405050197%21sh%21ES%210%21&spm=a2g0o.store_pc_aeChoiceSimplified.allitems_choice_2006574665339.1005005997414703

and for this mp3 player:
https://www.aliexpress.com/item/1005005434884904.html?spm=a2g0o.detail.pcDetailTopMoreOtherSeller.3.1620wSrawSraRD&gps-id=pcDetailTopMoreOtherSeller&scm=1007.40050.354490.0&scm_id=1007.40050.354490.0&scm-url=1007.40050.354490.0&pvid=d12f4dc2-9a51-4f1a-8853-413720b25ff5&_t=gps-id:pcDetailTopMoreOtherSeller,scm-url:1007.40050.354490.0,pvid:d12f4dc2-9a51-4f1a-8853-413720b25ff5,tpp_buckets:668%232846%238107%231934&pdp_npi=4%40dis%21EUR%211.64%211.64%21%21%211.72%211.72%21%40211b612517141207024165196e74ff%2112000033062927683%21rec%21ES%21%21AB&utparam-url=scene%3ApcDetailTopMoreOtherSeller%7Cquery_from%3A

It's not perfec