Bluetooth speaker (ported enclosure, 8cm driver)

How this project came to be?
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During the January lockdown I found Guppyk's project of his TL speakers. I ordered the filament (three reels of Prusament PETG, 80€ shipped), and the speakers (30€ for the pair shipped), not to mention the gold plated banana plugs (around 15€ shipped for four pieces) and I wasn't overwhelmed with the results... well, shit happens, I just flushed 125€ and a week of time down the toilet...

I went back to the design's comments to warn others not to do the same thing as I did, and then I found jojolll's bass reflex design. I was careful, so I printed only one speaker, and didn't assemble it until a few days ago (that's late August). After assembly I hooked it up to my Revox B250 amp and I was rather pleased with how it sounded. This gave me the idea for a Bluetooth speaker project.

I got a SANWU SW-HF01 amplifier off a local supplier (can be had from China for less), used WinISD to calculate the optimal speaker