DIY Planar magnetic heapdhones in details

  1. mitchell2001
    i,d like to know too
     
  2. CoffeeCutie
    :open_mouth: :hushed: :fearful: :no_mouth:
    This is simply astounding. I built a few planar headphone drivers using my 3d printer/ some N50 magnets a number of months ago... Not as cool anymore, I didn't see this thread....

    The quality of your work is inconceivable!!!
     
  3. Garuspik
    Hello! Sorry for couple of month without updates!
    Finally yesterday I've received my custom membranes for 10 pairs of headphones. They vary from 34.8 to 35.3 ohm. I consider this to be a good result.

    IMG_2664.JPG
    Macro shot of traces. You can see what quality I've finally achieved.
    IMG_2665.JPG
    Also I've made a first set of inner parts from fiberglass plastic.
    My custom ordered magnets will be installed in them
    IMG_2660.JPG IMG_2672.JPG
    Membrane itself will be glued here:
    IMG_2663.JPG

    Ordered 300 pcs of N52 grade neodymium magnets. Expensive, but worth it.

    IMG_2667.JPG
    Test assembling without membrane

    IMG_2668.JPG IMG_2670.JPG
    Force of magnetic repulsion is HUGE
    IMG_2674.JPG IMG_2676.JPG

    I hope you like my work. Tomorrow I'll assemble membrane and magnetic system in headphone cup
     
  4. CoffeeCutie
    I like this work! I was considering buying some custom magnets too. I am working on a small in with a larger magnet company (in China), but I am kind of curious about how you got yours. I was thinking about etching my own pyralux (good call!!!!) material, but it seems like you are able to get them fabricated elsewhere? I was toying with either a photoresist etch (better) or 3d printing a removable trace on the copper (faster). So cool to watch this unfold...
     
  5. Garuspik
    I've ordered my custom pcb on pyralux in local factory in Ukraine. Trace is 0.25 mm wide. Not really good idea to make it on your kitchen :wink:
     
    CoffeeCutie likes this.
  6. GREQ
    Wow, stunning work.
    It's certainly been worth the wait. Looking forward to the next update :)
     
  7. Garuspik
    Thanks. A few more photos how I assemble mebranes for left and right channel.

    membrane2.jpg membrane.jpg ready membrane.jpg
    I'm proud that I achieved a big square without any compromises. That took me a long time.
     
  8. chinsettawong
    Very nice and beautiful work. By the way, how thick is your spacer?
     
  9. Garuspik
    3mm per side
     
  10. chinsettawong
    Wow. That's a lot thicker than electrostatic's.

    Thanks.
     
    Last edited: Jul 26, 2017
  11. Garuspik
    Yes, but it can move much more air.
     
  12. chinsettawong
    Yes, I understand. You also don't have to tension your diaphragm so tight and you get better bass that way too.
     
  13. MuZo2
    How thick are membranes?
     
  14. Garuspik
    12 um capton + 7 um copper.
     
  15. Garuspik
    Sure you understand :wink: You're the author of the most outstanding DIY esl headphones!
     
    chinsettawong likes this.

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