[dhruvmeena96]

Is not a good idea of using one cap parallel to the driver without resistor for low pass filter.
Only one series cap for High pass filter.

RC low pass – how it works
The output voltage Vout follows the erratic input voltage Vin delayed in time in the same jump height. This is because the changed input voltage briefly passes through the capacitor because the capacitive resistance of the capacitor builds up first. Once the capacitive reactance has reached its new value, the output voltage does not change any further.

With a sinusoidal input voltage, on the other hand, we get a weakened output voltage. The attenuation depends strongly on the frequency due to the slowly developing capacitive reactance of the capacitor. As the input frequency increases, so does the difference between the input and output voltages.

RC lowpass works

Capacitor in parallel of driver act as lowpass(as series act as highpass)

And resistor in series(to attenuate the system and change the F3 or the point of rolloff, or impedance match or impedance setting while crossing)

 

[528367]

RC lowpass works

Capacitor in parallel of driver act as lowpass(as series act as highpass)

And resistor in series(to attenuate the system and change the F3 or the point of rolloff, or impedance match or impedance setting while crossing)

One cap series is good for high pass filter.
Yes it can act like a fake low pass filter one single cap parallel.

 

[dhruvmeena96]

One cap series is good for high pass filter.
Yes it can act like a fake low pass filter one single cap parallel.

You don't fake it
Because it shows deviation on impedance same as a series inductor
There is no faking it in circuits mate

Anything which works is truth

 

[Bassiklee]

To the person who broke off a toothpick in a bore several pages back, nothing sticks to teflon tubing. It is available in sizes that just so happen to match the tube sizes we tend to use for bores. I'll let you fill in the rest.

 

[528367]

You don't fake it
Because it shows deviation on impedance same as a series inductor
There is no faking it in circuits mate

Anything which works is truth

Is ok .

 

[dhruvmeena96]

It works man like a low pass filter but you can’t understand that one single cap low pas filter ( first order crossover is like no crossover )
one single cap is good for for tweeter.

woofer with 1st order crossover is no Subwoofer.

Do you think I don't have idea or you know everything better.

Leave it better

It really depends on application mate
I didn't wanna offend you

Take a 38D1XJ
Measure it's response
Put it in series so you increase driver internal inductance seen by amp and make it high resistive on high frequency

Add a parallel capacitor and you get a lowpass


Dont forget that speaker like BA are highly inductive and they also come into equation, that's why we are able to get everything done by capacitors only and resistor for fine tuning

And there is a reason why 38 is used for woofer and swfk for tweet, it's because of its inductive behaviour and diaphragm size and how voice coil interact with magnets Inside to back volume of driver and vents

Plus I get subbass shelf without even adding damper and crossover on 38 with bass shelf of 150Hz..
It also depends what mid driver you use

 

[528367]

I will measure it with one one cap parallel to see the impedance raise.
I have ordered also some smd inductor 10mm length i want to make one crossover with inductor for a 2 way iem . I don't know exactly the driver combination. I have 38dj00, 2389D, SWFK-32255, 38D1XJ00 , EST65QB02
The inductors are 3,3Mf and 6,8Mf

 

[dhruvmeena96]

I will measure it with one one cap parallel to see the impedance raise.
I have ordered also some smd inductor 10mm length i want to make one crossover with inductor for a 2 way iem . I don't know exactly the driver combination. I have 38dj00, 2389D, SWFK-32255, 38D1XJ00 , EST65QB02
The inductors are 3,3Mf and 6,8Mf

Now see the size of the smd inductor

That's why they are not worth much as I can push more driver and reduce IMD and split power between multiple driver of same frequency range.

But it's your way and inductor have its own advantage, if you can fit it all

 

[528367]

Now see the size of the smd inductor

That's why they are not worth much as I can push more driver and reduce IMD and split power between multiple driver of same frequency range.

But it's your way and inductor have its own advantage, if you can fit it all

These smd inductors are rare. The value is huge. Yes it fits .
I can use only a 2 way 2 dual drivers to make it fit . This is fun project.
Only for experiments to see how it will sound.

 

[Luffytaro]

To the person who broke off a toothpick in a bore several pages back, nothing sticks to teflon tubing. It is available in sizes that just so happen to match the tube sizes we tend to use for bores. I'll let you fill in the rest.

It's me : ). I check all tool I have at that time and only toothpick was fit with ID tube. I did not carefully and make glue stick on it. I tried to rotate the toothpick and it broke : (. I removed faceplate and will make new one.

 

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[amemisome]

All of my drivers and shell building stuff arrived yesterday, I tested out the drivers and they all work. Was just testing (no solder or glue) to see how easy the soldering and attaching the tubing was going to be and I'm surprised at how smooth the test went, so I'm hopeful for this first build. I also checked one of the SMD resistors with a multi-meter and it measured very close to the stated value, as expected.
The measurement gear is going to take another 2~5 weeks to arrive and I still need to have my impressions taken, so I'm not quite ready to start just yet. Thanks to everyone for the help so far

 

[Lucas Taboada]

Hi everyone! I've been out of the CIEM world for some time due to the pandemic. I'm not finding the Bellsing 6 driver in any store, even taobao, it isn't available for purchase anymore?

Another question: Is anyone here cataloging the most common buildings from this thread? It would be awesome to have that 'cause it's becoming very difficult to find them with 800+ pages.

 

[amemisome]

Hi everyone! I've been out of the CIEM world for some time due to the pandemic. I'm not finding the Bellsing 6 driver in any store, even taobao, it isn't available for purchase anymore?

I believe it's no longer made, at least that's what I understood from comments about them on here and on reddit. There was a lawsuit by Knowles I believe, not sure if it affected the BS6 specifically though. Somebody else probably knows more about it, since I'm pretty new.

Another question: Is anyone here cataloging the most common buildings from this thread? It would be awesome to have that 'cause it's becoming very difficult to find them with 800+ pages.

I've recently read though a lot of posts here, as I've just stared out. This post is the best TL;DR I've found so far:

Masm 3 pro https://crcit.net/c/4c8ad023

BS6 + Zobel https://crcit.net/c/49f54ed9

Finale 2 Reference CIEM https://crcit.net/c/7d75c8a5

Finale 3 CIEM https://crcit.net/c/bd30416c

Comparison MASM with resonator vs BS6 (and others): https://www.head-fi.org/threads/home-made-iems.430688/page-603#post-14961816

Comparison Finale 2 Reference, Finale 3, BS6: https://www.head-fi.org/threads/home-made-iems.430688/page-627#post-15023250

Only fill up the ear canal, pictures are hundreds in this thread.

Maybe there's other designs this post is missing that I've overlooked, if that's the case I'd also love to hear it.

 

[dhruvmeena96]

I believe it's no longer made, at least that's what I understood from comments about them on here and on reddit. There was a lawsuit by Knowles I believe, not sure if it affected the BS6 specifically though. Somebody else probably knows more about it, since I'm pretty new.


I've recently read though a lot of posts here, as I've just stared out. This post is the best TL;DR I've found so far:

Maybe there's other designs this post is missing that I've overlooked, if that's the case I'd also love to hear it.

What do you want to build
Sound profile
Specs
Driver used

Mention that and we would be glad to help you out

Read articles about BA zobel, impedance ratio, frequency analysis, zobelception style build, crossover type and effect on BA

What BA to be used where and requirement of the BA for a specific timbre

Resonantors etc are still out of the reach as it is a game where a lot of variables comes in.(easy to calculate but hard to determine where to put in perpendicular to what tube lenght from the BA)

There is a lot more on this tread except shell building(which is important too)

And it's nice to see universal iem gang coming in as it is not possible for everyone to make custom(especially me with my shaky hands after accident)

Also there is a recent planar build also... Which you guys can check out
Forgot the page though but it's recent