[dnspics]

hello, I didn’t have time to play with this config but it seems to me that the white damper is too weak on the 30017.
Use a green and on bass use an orange.
For tubes, try 1.5mm ID on 30017.
I think you’d gain a little more balance.

Aldo

hello, I didn’t have time to play with this config but it seems to me that the white damper is too weak on the 30017.
Use a green and on bass use an orange.
For tubes, try 1.5mm ID on 30017.
I think you’d gain a little more balance.

Aldo

Okay, it's an interesting idea. But one more small question. At which point would you recommend the dampers?

 

[Aldo40]

Okay, it's an interesting idea. But one more small question. At which point would you recommend the dampers?

it is according to the knowledge of certain references, but again, adjust to the ear, this is the best way, and then there is the measure also that can help, for you to experiment

 

[dnspics]

it is according to the knowledge of certain references, but again, adjust to the ear, this is the best way, and then there is the measure also that can help, for you to experiment

I may not find the right recipe for me ready-made, there will be a lot of testing and experimenting, but that's what I enjoy.

 

[dhruvmeena96]

Okay, it's an interesting idea. But one more small question. At which point would you recommend the dampers?

Try to avoid dampers in last octave tweeter if you are starting up
Otherwise tune with dampers
That's suggestion from my side

 

[tomekk]

How about 4 x 38D1X per side ? Placed exactly like the photo below or is to crazy. It looks nice. Lol.
4x 38D1Xs, 2x 2389D, 2x E50DT0005.
Im thinking of building my last iem with BAs and that's it .
This gonna be out of this World. Hahahaha.

I will try double 38DX1 x 1,5mmx7mm + 1mm x15mm (altogether) full range parallel, polarity setting needed , double E50D full range parallel 1,5mm x15mm, 2389D 2mmx15mm 0,47uF no damper.

 

[kkugel]

Anyone can tell me perfect 2389D setup? I'm tired of cleanliness issue with it. Just wanna do a test listen with perfect setup, can be missing bass, only mids for now for testing.

 

[seijisandrei]

Yes it depends. Some prefer knowles and some prefer sonion.
The 2389D is my favorite driver. Without this driver I will quit building iems .So much I like it. Of course knowles sound also amazing. Most popular combo is ci + ed . I prefer sonion.

True. Sound is relative to the listener, that's why we are building our own! haha! But even though there may be individual driver advantages, once they are combined, we still need to tune them so there is no really best driver nor best iem - well for me the best iem is my own diy iem hahaha!

 

[seijisandrei]

Now for my second recommendation question:

What specific type of capacitors/resistors are best for making iems? I only know sizes, but more specific than those, I don't have any idea. :/

 

[Max spl]

I will try double 38DX1 x 1,5mmx7mm + 1mm x15mm (altogether) full range parallel, polarity setting needed , double E50D full range parallel 1,5mm x15mm, 2389D 2mmx15mm 0,47uF no damper.

You mean 2389D full range ? And E50DT0005 with 0,47 uf ?
Take into consideration the power sharing and impedance.

2x 38D1X all parallel = 6,25 ohms if you add more drivers parallel the impedance will fall lower than 3 ohms = no good bass and will play not loud at all at low frequencies.

2x 38D1X - parallel and then series = 25 ohms , you know what I mean,
then do the 2389D 25 ohms with 1 x 20 ohms resistor + 1 ohm resistor , you know what I mean.
parallel connection the 38D1X + 2389D. this will make a total 12,5 ohms .

Then 0,82 uf or lower for the 2x both parallel parallel E50DT0005 s .

About tube lengths I'll go like always with the longest possible tubes "1mm" for the bass drivers , same length tubes for mids and highs, 1x 1.5 mm and 2mm for highs both mid and high drivers close to the nozzle. Red damper for the 2389D And thats it .
Any connection parallel - series to the same impedance drivers the power sharing will be equal.

I'll do something similar to this If I can't fit 4x 38D1Xs , 2x 2389D and 2x E50DT0005 .

Im not gonna add cap parallel to the bass driver and things who doesn't work, im gonna do it it simple with taking into consideration power sharing and impedance and it will sound amazing.

If you start building and you make it sound good with your own way let me know please.
We have the same drivers

 

[Max spl]

Now for my second recommendation question:

What specific type of capacitors/resistors are best for making iems? I only know sizes, but more specific than those, I don't have any idea. :/

Try to find the lowest tolerance possible x7r ceramic capacitors .i use Kemet and murata.
NpO caps exist only in extreme low values.

Resistors the Same , the lowest tolerance possible, I use thin film resistors from Viking 0,1 % tolerance.
Idk why exactly I like so much this specific resistor but I buy only from Viking.

I can't hear any difference between caps and resistors from top companies.
I personally try to find the lowest tolerance possible . Voltage is also not so important . What Voltage for what. Lol

 

[Xymordos]

I used a dual 29689 in a setup and all I did was use a 3.3uf or 4.7uf first order high pass with a 10-20ohm resistor following it.

 

[seijisandrei]

Try to find the lowest tolerance possible x7r ceramic capacitors .i use Kemet and murata.
NpO caps exist only in extreme low values.

Resistors the Same , the lowest tolerance possible, I use thin film resistors from Viking 0,1 % tolerance.
Idk why exactly I like so much this specific resistor but I buy only from Viking.

I can't hear any difference between caps and resistors from top companies.
I personally try to find the lowest tolerance possible . Voltage is also not so important . What Voltage for what. Lol

Thanks a lot good sir!

 

[Max spl]

Thanks a lot good sir!

You welcome good sir .!

 

[Wgibson]

I don't worry about cap tolerances, some variation can be useful actually, just get enough that you can match them. I did notice the value changes after soldering to smd caps, so watch out for that.

 

[Max spl]

I don't worry about cap tolerances, some variation can be useful actually, just get enough that you can match them. I did notice the value changes after soldering to smd caps, so watch out for that.

In the most cases the capacitance is lower. So lower tolerance the best