3D Printed Headphones
by shannonley, published
- How I Designed This
- Overview and Background
- Lesson Plan and Activity
- Assembly Instructions
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Here is a set of great looking and awesome sounding headphones you can print yourself.
The parts that cannot be printed (drivers, cushions etc) are all readily available and will cost around $25 (plus shipping).
How I Designed This
Unlike loudspeader enclosure design, there is almost no publicly available intormation on designing great sounding headphones (that I could find anyway!). Therefore I had to do a heap of development and testing to understand how the design variables affect the sound. If you're interested, details of my work can be found here: http://homebrewheadphones.com/design/detailed-design/
Info on the test rig I built for sound development can be found here: http://homebrewheadphones.com/closed-back-test-method/
Overview and Background
Recently there has been a lot of hype about 3D printing being the way of the future, including how it will replace store-bought items.
With this project, I set out to expore two aspects of this: firstly whether people will readily 3D print things they are likely to otherwise buy, and secondly, how mass manufacturing and 3D printing will realistically have to coexist for the foreseeable future (as some things such as the magnets and mylar film in the driver cannot easily be printed yet).
Lesson Plan and Activity
The lesson can comprise of two elements:
- a hands on demonstration of 3D printing, how it works and what it can do
- a discussion exploring the implications of 3D printing, including implications on existing industries and the consumer (eg increased personalisation of products etc)
Parts to purchase:
2x drivers: http://bit.ly/Dayton-ce38mb-32
Cushions: Bose QuietComfort QC15 QC2 replacements http://ebay.to/2lvb5vd
Cable: Sol Republic Master Tracks HD V8 V10 V12 X3 replacement http://amzn.to/2kAyrkb
2x 2.5mm female audio jacks http://amzn.to/2niNn8n
Hookup wire. These come cut and stripped http://amzn.to/2jv59Qk
Gel consistency glue for plastic http://amzn.to/2liPTXh
Parts to print:
2x baffles (printed with the driver mouting side facing up)
I made mine from ABS using the printer's default settings, except for reducing the headband infill to 5-10%.
Step 1: Solder the hookup wire to the 2.5mm jacks
Solder two sets of hookup wire to the 2.5mm jacks as per the photo.
On the jacks we used, the negative (black) wire is the large tab and the positive the small round one.
Step 2: Attach the driver and jacks to the baffle
Mount the jacks into their holder. They will screw in snugly.
Being careful not to damage the mylar film, place the drivers into the baffles with the terminals on the driver 90° from the jack, oriented towards the wire retainers (yellow circle in the picture below).
Glue the drivers into the baffles with four 1/4″ (6mm) length spots of gel glue, placed at 90 degrees around the perimeter of the driver (blue arrows). DO NOT glue around the full perimeter of the driver, as this will adversely affect the sound.
Let the glue dry.
Step 3: Attach the wires to the drivers
Solder the hookup wire to the drivers, with the red wire going to the solder tab next to the red dot. You can solder the wire on just by melting the tabs and inserting the wire, ie without adding any solder.
Make sure the wires are in their retainers so that they don't get caught by the headband.
Step 4: Tune the sound
Now for step that took me tons of testing to figure out! In a closed back design, the Dayton Audio CE38MB-32 drivers are too bass-heavy and lacking in high end detail. To even things out a bit, we need to reduce the mids/bass to make them more equal to the treble. Don't worry, there will still be plenty of bass after this step!
Using plasticine or similar, roll a small amount into a sausage then block all except one of the holes under the black fabric on the back of the driver. The black arrow below shows the non-blocked hole.
Step 5: Assembly
Press the baffles into the covers, making sure the headband end of the baffle corresponds to the headband end of the cover (ie the two square holes line up). It may take a bit of force to assemble them – they are deliberately a tight fit so that they don’t require glue and can be disassembled.
Using the double sided tape which comes on them, attach the pieces of fabric to the baffle.
Fit the cushions to the baffle.
Insert the headband and cables. They are handed, so make sure you put them on the right way around!
Crank up some tunes and enjoy!
Please share pics of your build, I would really love to see them!
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3D Printed Headphones by shannonley is licensed under the Creative Commons - Attribution license.
What does this mean?
- You must attribute (give credit) to the creator of this Thing.
- Remixing or Changing this Thing is allowed.
- Commercial use is allowed.
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