Home-Made IEMs
Mar 29, 2022 at 10:48 AM Post #13,801 of 16,107
I received some 14mm Planars I ordered from taobao recently, here are the measurements:
Closed back:
1648565148270.png

Open Back:
1648565190314.png

Closing it off seems pretty nice for a 3 way config as the woofer. Might try something with either the twfk or 2389D + swfk.
I havent listened to them yet though, Might need to 3d Print a shell first.
 
Last edited:
Mar 29, 2022 at 11:33 AM Post #13,802 of 16,107
I received some 14mm Planars I ordered from taobao recently, here are the measurements:
Closed back:
1648565148270.png
Open Back:
1648565190314.png
Closing it off seems pretty nice for a 3 way config as the woofer. Might try something with either the twfk or 2389D + swfk.
I havent listened to them yet though, Might need to 3d Print a shell first.
this doesnt look like IEC711 standard graph as I used to get 1.5kHz peak when throwing it inside shell TBH
 
Mar 29, 2022 at 4:08 PM Post #13,803 of 16,107
I received some 14mm Planars I ordered from taobao recently, here are the measurements:
Closed back:
1648565148270.png
Open Back:
1648565190314.png
Closing it off seems pretty nice for a 3 way config as the woofer. Might try something with either the twfk or 2389D + swfk.
I havent listened to them yet though, Might need to 3d Print a shell first.

You mean these? I got some on the way too. If they're the same could you maybe share the exact dimensions so I can start modeling a shell? thanks!
 

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Mar 29, 2022 at 11:42 PM Post #13,805 of 16,107
You mean these? I got some on the way too. If they're the same could you maybe share the exact dimensions so I can start modeling a shell? thanks!
The diameter is not entirely uniform but the widest part is 14.3mm
Height is 4mm excluding the solder pads
the distance from the edge of the metal grid to the edge of the housing is 1mm
All measurements +-0.1mm
 
Mar 30, 2022 at 8:57 AM Post #13,807 of 16,107
Hi guys, its now time for me to order the materials I need to build my first CIEM shells. Can someone recommend the dreve fotoplast s io resin when I want to color it to opaque white? If yes, which pigment can you recommend? If no, which resin + pigment can you recommend? + is there a dentist light with 365nm?
 
Mar 31, 2022 at 1:23 AM Post #13,808 of 16,107
You mean these? I got some on the way too. If they're the same could you maybe share the exact dimensions so I can start modeling a shell? thanks!
Tuning the planars have been quite painful for me, especially adjusting the bass response. I have to outsource my manufacturing which makes the process excruciatingly slow. I have ordered some custom machines housings with a variety of vent sizes, vent positions and dampening materials. I can share the results of the test with you either through DMs or by posting on this thread If you would like.
 
Mar 31, 2022 at 4:27 AM Post #13,809 of 16,107
Tuning the planars have been quite painful for me, especially adjusting the bass response. I have to outsource my manufacturing which makes the process excruciatingly slow. I have ordered some custom machines housings with a variety of vent sizes, vent positions and dampening materials. I can share the results of the test with you either through DMs or by posting on this thread If you would like.
I'd love to hear your findings, I can do some rapid prototyping at least as I have a 3d printer but your results would help out a lot.
 
Mar 31, 2022 at 8:46 AM Post #13,810 of 16,107
Hi guys, its now time for me to order the materials I need to build my first CIEM shells. Can someone recommend the dreve fotoplast s io resin when I want to color it to opaque white? If yes, which pigment can you recommend? If no, which resin + pigment can you recommend? + is there a dentist light with 365nm?
In addition to my last question: how do you protect the sound tubes from dust or cerumen? I know there are cerumen filters but I cant find sockets for them...
 
Apr 1, 2022 at 7:05 AM Post #13,812 of 16,107
In addition to my last question: how do you protect the sound tubes from dust or cerumen? I know there are cerumen filters but I cant find sockets for them...
Theres a number of different ways to do it. WarnerTech Care, here in the USA carries the HF-4 socket and the cerustop bushings. Heres your main trouble, as I see it. The bushings/ sockets are designed for 2.16mm OD soft pvc receiver tubing. You cant tube the drivers efficiently for what we are doing. In hearing aids, theres an amp, microphone, etc and those get dialed in through a computer program most of the time. Which is why hearing aids run on batteries and our IEMs do not.

now, there are some spring looking type inserts you can try. They dont require a socket or bushing. Ive never used them before.

if you go the socket route, the Hf-4 has given me fits! i have a handful left over. I also have a handful of cerustop bushings and a bunch of cerustop filters. If you want to go either of those routes. and your in the USA, DM me. We can exchange contact and communicate via email if you want to work something out.
 
Apr 1, 2022 at 11:06 AM Post #13,815 of 16,107
Hello,Could Sonion 17a003 driver be used as a midrange driver in a three way.Like sonion 3800 ,17a003,knowles twfk,swfk etc
why not bro, its just that you have to measure the BA separately, see how it actually measure and use it in any way you want
just make sure, to not use tweeter or super small drver as woof or mids(uppermids is fine)
 

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