Ei9ht Smartphone Sound Amplifier

Hi,
here is a little remix of the MMX's Folded Horn Passive Phone Speaker
https://www.instructables.com/id/Folded-horn-passive-phone-speaker/

The squared version is absolutely not scaled from MMX's original
The rounded version is no more scaled than the other one ;p

I HAVEN'T PRINT IT, and maybe I'll never print it, It's a work in progress so... ;p
Designed for my M10 with case, so a max 76mm wide phone, and max 15mm tick will fit
Make verification on your phone AND on the stl befo