POINT2 Full-Range Speakers

Designed by Adam Anderson

Design

The design combines laser cutting and 3D-printing to make a fairly simple speaker that also sounds (surprisingly) good. They use a 3.5" Dayton Audio DMA90 aluminum cone full range driver, which has a fairly linear response all the way through higher frequencies. The ported design also helps the speakers to dig a bit deeper into the bass range, to about 60Hz. The files can easily be changed to accomodate a different driver.

Build

The following components are needed to build one speaker:

• Dayton Audio DMA90-4 driver

  Can be replaced with another driver, you can probably fit a 4" driver.

• 3D printed supports and horn

  The files can be found in Supports folder. The parts with Side in the name needs to be printed mirrored as well. The speaker will maybe sound better (at least look better) if the horn is sanded smooth.

• Plywood panels

  Dxf files for laser cutting can be found under Panels. I used 4mm plywood, remember to use longer screws if you decide to use thicker plywood.

• Sealing tape

  This tape is used to create an airtight seal between all of the panels and to seal the horn. Low-end response is significantly worse if air can escape through somewhere other than the horn. I used 4mm wide tape.

• M3x8 screws

  Probably the defining feature of the build. Too many to count, buy 100 and you will be safe.

• M3x20 screws, M3 nuts

  8 each to mount the speaker and the horn.

• Speaker terminals and wires

  I bought banana plug jacks from ebay. You will have to add cutouts in the back panel.

Images

All parts laid out:

Foam applied to edges:

Support structure: