A Dodecahedron Speaker for Desktop Printers

thingiverse

The dodecahedron speaker is a fascinating tool for acoustics research and a fun party accessory. Although it's available commercially, the cost can be steep. DIY enthusiasts may attempt to build their own but face challenges in achieving accurate compound angles with manual tools. A 3D printer can simplify this process, with total costs amounting to under $100 for parts and materials. The speaker consists of four basic parts: face modules, vertex plugs, edge gaskets, and bezels. Window screen cloth is used in the bezels, installed using rubber spline and a screen roller tool. The assembled speaker array weighs 5.6 lbs and measures 7.5" across and 8.6" from point to point. Its speakers are wired in a hybrid series-parallel circuit with an impedance of about 10 ohms, suitable for most amplifiers. Non-printed parts include ferrite speakers, instrument patch cables, screws, split washers, vinyl serrated spline, window screen, hook-up wire, adhesive-backed craft foam, orange wire nuts, glass wool, and electrical tape. Detailed assembly instructions are available online.