Phone stand folded speaker horn

thingiverse

This active speaker phone stand truly amplifies sound dramatically. It boosts high frequencies more so than low frequencies without any insert. I attempted to exponentially increase the horn's surface area to maximize amplification, but my modeling skills and math fell short. Still, I'm quite pleased with the result for a first try. Any tips on how to refine the design would be greatly appreciated! The model fits my Mi A1 phone with case: thing 3044340. There are two inserts available - one with a .5mm gap and another with a .6mm gap. The .5mm worked for me, but it required some sanding and brute force to assemble.