This is a customizable Sub-Kick Microphone that I made. Be sure to download the latest version before you print it. There are likely changes! By default the .scad file is configured for a "Tang Band W6-1139SIF" speaker that I had kicking around. That's the one in the pictures. When purchasing a speaker, look for a speaker that has a low resonant frequency (Think 20-60 hz kinda range). Easiest to open the "sub_kick_maker.scad" file in OpenSCAD (freeware) and change the variables there rather than in the customizer. You will require: Should require no support for printing when properly oriented.