Skip to content

A Dodecahedron Speaker for Desktop Printers

?
Creation's quality: 5.0/5 (1 vote)
Evaluation of members on the printability, utility, level of detail, etc.
  • 2.2k views
  • 18 likes
  • 92 downloads

3D model description

A dodecahedron speaker can be a useful tool in acoustics research, and is definitely a fun toy to pull out at parties. They are available commercially, but pretty expensive. Some people build their own, but the odd compound angles and the high degree of accuracy and precision required in the parts make for challenging work with manual tools. It's a perfect job for a 3D printer. Total cost for parts and materials is just under $100. That includes speakers, hardware, wires, cable, plastic filament - everything.

January 16, 2015

These may be useful to anyone who wants to adapt the design to their own equipment.

3D printing settings

The high symmetry of the dodecahedron is amenable to a modular design, and this one consists of four basic parts: the face modules, the vertex plugs, the edge gaskets, and the bezels. The speaker grilles are made from hardware store window screen cloth installed in the bezels using rubber spline and a screen roller tool, just like a residential window screen.

The assembled speaker array weighs 5.6 lbs, not counting the cable, and measures 7.5" across, from face to face, and 8.6" from point to point. The speakers are wired in a hybrid series-parallel circuit that brings the total array impedance to about 10 ohms (again not counting the cable) which should be a comfortable load for most amplifiers.

Non-printed parts ("vitamins")

12 pcs × speaker, square, ferrite 3", 8 Ohm, 3W, Jameco SP83W

10 ft × instrument patch cable, 18 AWG leads, such as Conquest Sound CS118

30 pcs × sex bolt (hehehe), combo truss head, zinc plated, 3/16" barrel, #6-32 × 3/8", Bolt Depot 14285

30 pcs × machine screw, combo truss head, zinc plated, #6-32 × 1/2", Bolt Depot 2887

60 pcs × split washer, #10 , zinc plated, Bolt Depot 3023

108 pcs × wood screw, #4 × 1/4", black oxide or finish of your choice, such as McFeely's 0402-PSK

13 ft × screen spline, vinyl serrated, 1/8", black or color of your choice, such as Home Depot 3028737

3 sq ft × window screen, black or color of your choice, such as Home Depot 3003947

36 in × hook-up wire, stranded, 18AWG, white or color of your choice, such as NTE

18 in × hook-up wire, stranded, 18AWG, red or color of your choice, such as NTE

2 pcs × craft foam, adhesive-backed, 8.5 × 5.5" sheet, black or color of your choice, such as Fibre Craft

2 pcs × wire nut, orange, such as Ideal 73B

1 cu ft × glass wool, such as Owens Corning PINK

6 in × electrical tape

Detailed assembly instructions available here:

http://www.instructables.com/id/A-Dodecahedron-Speaker-for-Desktop-Printers/

  • 3D file format: STL
  • Publication date: 2018/11/02 at 17:16

Tags

Creator

License

CC BY

Best sellers of the category Gadget


Add a comment


Would you like to support Cults?

You like Cults and you want to help us continue the adventure independently? Please note that we are a small team of 3 people, therefore it is very simple to support us to maintain the activity and create future developments. Here are 4 solutions accessible to all:

  • ADVERTISING: Disable your AdBlock banner blocker and click on our banner ads.

  • AFFILIATION: Make your purchases online by clicking on our affiliate links here Amazon or Aliexpress.

  • DONATE: If you want, you can make a donation via PayPal here.

  • WORD OF MOUTH: Invite your friends to come, discover the platform and the magnificent 3D files shared by the community!