After few unlucky intents on freeCAD I finally found the best way to pass the sound efficiently with a good looking passive speaker design. This "round Speaker" is simple combination of typical basic freeCAD parts forms creation, sphere, cones and cube. Believe me, I am not an engineer, so I can not guarantee any powerful speaker sound. If you need to enjoy your music in a very personal intimate way, this really may help you. I have no interest on control the phone or plug the power cable, just listen my music. The sound is very directional and I think some high notes get lost into the PLA material use. The piece takes near 10m of 3mm filament using 4 vertical layers and 25% of infill with .25 mm layers height. Printing time is about 5:40 hrs on my Velleman K8200. Finally, it is only usable with iPhone 5 and 5s, do not think 5C fit it neither iPhone 4 family, may be iPod 5 generation, but does not have one to test it.