One handheld and one desk-mountable Speaker for guitar making. Also quite decent for listening to music.

For maximum stiffness, I printed these without infill, all perimeters. The filament is Greentec Pro CF.

I got the general specifications from the book "Mastering the sound of the acoustic guitar" by Giuliano Nicoletti.

These are mainly for playing a test tone and generating chladny patterns at different stages of guitar making, but they also sound surprisingly good as desktop speakers!