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DIY Planar/orthodynamic/isodynamic drivers

Sposhal

Sposhal

Torac Audio
Hi,

Been working on this project for a few months now and thought it would be nice to share. I have been working on making my own self designed and constructed Planar drivers. My intent is to eventually try and sell them for diyiers or anyone who wants to get their hands on a pair to experiment with tuning or transplanting them into existing headphones, whatever they like.

Currently have a working prototype using a 25 micron copper kapton substrate and an active area of 48mmx50mm and a diaphragm size of roughly 70mmx50mm. It is currently single sided but it will have magnets on both sides when my new longer screws arrive.

I hope to find another material that is thinner, lighter and less expensive, but currently I think it sounds pretty nice to me.

I will update this post with progress as I go along. I would have liked to have posted some pictures but this is my first post and I am therefore unable to, I will as soon as I can.
 
That's great, I'll follow this with interest. You should be able to host your photos elsewhere and use the IMG tags to have them show up here.
 
orangeart said:
That's great, I'll follow this with interest. You should be able to host your photos elsewhere and use the IMG tags to have them show up here.
Click to expand...

I tried that with Imgur without success. Here are the links without whole URL:
//i.imgur.com/yp4NUwA.jpg
//i.imgur.com/AV69WLq.jpg
 
sq225917 said:
Needs more tension
Click to expand...
It does indeed, was too excited that I had my first working diaphragm etched and did a poor job of glueing so it lost its tension. Making a new driver with tweaked parts tonight, glueing magnets as we speak :).
 
yp4NUwA


AV69WLq
 
orangeart said:
That's odd, I tried to add you images above as well, to no avail. I've noticed that this doesn't always work for some reason. @Tony L any idea why?
Click to expand...
I noticed I had the images set to hidden on Imgur, not sure if this would make a difference or not. Changed it to public now though.
 
FYI, I copied the partial link that he posted above; opened up another tab on the browser and pasted it into the address bar to get it fully qualified; then copied and pasted those when creating the message above. For example:

Partial link looked like this: i.imgur.com/yp4NUwA.jpg
Complete link looked like this: https://i.imgur.com/yp4NUwA.jpg

Usually you can just add https:// to the front, but not all websites support SSL connections. It's safest to let your browser confirm and complete them first, then copy them back to the message on pfm.

Note that occasionally this doesn't work. I posted a message once where both images were from my own site. One worked, and the other didn't. (They both appeared in the message preview, but not in the published message.) When that happens, I include the clickable link alongside the image, so that people can use it as a fallback.
 
Here is the one I was working on last night, with the proper screws I was able to assemble the magnets on both sides this time and I got a much better tension on the diaphragm. Sound alright but I think it needed a bit more glue where the diaphragm meets the edge of the plastic piece to stop some resonance. The resonance does seem to go away when a seal is made by applying a pad and putting it up to your ear.

https://i.imgur.com/f4ueaJ9.jpg
f4ueaJ9.jpg

https://i.imgur.com/Izfz7co.jpg
Izfz7co.jpg
 
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