[MuZo2]

IMG_20180830_182801

EDIT: How can I upload photos directly?
EDIT2: Sorry for the multiple edits, I am new around here.

Safety first, be carefully with what you put in your ear. Just use medical grade materials. You are responsible for yourself and also when you post here you should understand that others might follow your instructions blindly.

 

[ThanosD]

Safety first, be carefully with what you put in your ear. Just use medical grade materials. You are responsible for yourself and also when you post here you should understand that others might follow your instructions blindly.

I edited the original post to discourage anyone from using this material. I know this stuff is not supposed to be used for extended contact with skin. However, I did this more as a "proof of concept" as I previously said, and when I started the whole thing, mid-summer, I didn't have a way to obtain the proper materials. I am going to revisit the project next summer, as I found a shop from Germany with everything I need, and at reasonable prices, that can ship to Greece. But for now, studying reserves most of my time.

 

[JoyjeetPanday]

My first pairs of DIEMs. Took me a while to make and lots of trial and error but here they are!

https://www.dropbox.com/s/kuvb78lw67322sq/36639853_10155632081173404_2694860238984577024_n.jpg?dl=0

https://www.dropbox.com/s/o578lvpr2zocfbu/37173045_10155658336233404_8232952995009003520_n.jpg?dl=0

How did you get the black and cream opaque shells? What dyes did you use.
Btw, they look amazing.

 

[Xymordos]

Wow Sonion developed an electrostatic tweeter for IEMs! Just saw the production IEMs coming out of the Chinese manufacturers.

http://audio.sonion.com/electrostatic-tweeter/

 

[ThanosD]

Guys, should I add a hole at the faceplate for the DD driver? Cause most of my earphones have a breather hole. Would this improve the bass response?

 

[stackleberg]

How did you get the black and cream opaque shells? What dyes did you use.
Btw, they look amazing.

It took so many tries for me to get the colours to work. I tried acrylic paint and UV resin dyes from ebay but my resin wouldn't cure. Later, I got a better UV light and tried acrylic ink and it worked like a charm. You need to experiment with how much you should put in. Put enough to make it opaque but not too much so that it won't cure.

 

[dhruvmeena96]

Guys, should I add a hole at the faceplate for the DD driver? Cause most of my earphones have a breather hole. Would this improve the bass response?

You have to make vent on the faceplate or useatubing from back of driver which release back pressure somewhere

 

[ThanosD]

You have to make vent on the faceplate or useatubing from back of driver which release back pressure somewhere

Hmm, yeah, this can be done. Will this improve the bass response?

 

[dhruvmeena96]

Hmm, yeah, this can be done. Will this improve the bass response?

Vent in speaker application improve bass response directly. Here, the decay will tighten up and pressure distortion would be lowered making bass driver breathe a little more than closed back. This can let you hear depth of bass while improving texture and for some drivers, yes, it may boost the LFE(low frequency extension)

 

[ThanosD]

Thanks a lot for the help. In next days, when I find some spare time, I will implement a vent and post the results. I just need to find a good way to do it. I saw that some people have done it with the back side of jean studs. Should I add a mesh to the vent too?

 

[Choy Wei De]

Hi everyone, I have been lurking around for months. And I finally make one IEM with a universal shell successfully that suit my preference.


I have been testing and tuning my IEM using my iPhone 6S, I don’t own a frequency analyser. All is good until my friend tried it using his Note 8. And he said it’s super soft in loudness, he has to max his volume and still not loud enough.. And my another friend tried using his iPhone 6S Plus, he said it’s also very soft need to increase to 75% loudness instead of his usual 30-40%. I also use around 75% on my iPhone.


This is my set up:

ED 29689

11mm ID 1mm tube

13mm ID 2mm tube

Overlap by 2mm

Orange filter right at the end of 2mm tube at the nozzle opening.

15mm positive wire from mmcx connector to 18ohm resistor then 15mm positive wire to driver.

20mm negative wire from connector to driver


Does any of that causes the low volume?

 

[zeed]

Sure, the 18ohm resistor. You have doubled/tripled the impedance of the ED29689 (10ohm 500hz, 7ohm 1Khz).
Why did you use it since you are using only 1 driver?

 

[Choy Wei De]

Sure, the 18ohm resistor. You have doubled/tripled the impedance of the ED29689 (10ohm 500hz, 7ohm 1Khz).
Why did you use it since you are using only 1 driver?

So I need to use either 10ohm, 20ohm, 30ohm or 7ohm, 14ohm and 21ohm?

I’m just copying some set up from the internet. And apparently using 18ohm roll of the highs quite nicely.

How much different would it make for using the right resistors?

 

[zeed]

Sorry but you misunderstood; I was saying that using a 18ohm resistor in series with an ED29689 driver means that the total impedance will be increased to around 30ohm instead of the original 7-10ohm.
You should try a lower value resistor (such as 4,7-8,2ohm) or just try using a cap without the resistor. I can't calculate now but a cap of around 0,1-0,3uF should work fine.

 

[Choy Wei De]

I understand, because I wanted to copy etymotic ER4 and modify from there. Does it mean ER4 also very soft because it using 50ohm and above? like ER4X and other variation.