[Senor CIEM]

Just finished another build. Took me really long to fit the tubes in a really small ear canal.
Used 1.5 ID and 2.5 OD. 2mm ID would't work for this. Diameter of the ear canal is around 2.5mm.




Finished version:

Spoiler: Pics

 

[eunice]

What I do is I make the ear canal a little thicker by applying some wax on the impressions with a brush. Then I normally build the shell and after filling up the ear canal with resin and curing I grind the ear canal down again.

Most bad impressions I have seen have a too thin ear canal anyways and adding a little bit even improves fit.

 

[eunice]

Just finished another build. Took me really long to fit the tubes in a really small ear canal.
Used 1.5 ID and 2.5 OD. 2mm ID would't work for this. Diameter of the ear canal is around 2.5mm.




Finished version:

Spoiler: Pics

Beautiful!

 

[PinoNL]

I have the same problem with narrow ear canals, tried to do the scary build a couple of times and couldn't get the two 2mm ID tubes to fit my shells, the only way to make it work was to pour the acrylic with the tubes already in place.

Looks great!

 

[PinoNL]

I will try to send a picture of some tips that would solve your issue on sealing. They are some tips that come with some Westone IEMs.

I’ve tried a lot of different tips already. Checked out the Westone tips though. The diameter is not for the shells that I have

 

[ninjadoc]

Here is a tip

 

[dhruvmeena96]

Savant with FED30048(no damper) sounds leagues better than normal Savant's ED29689 with green damper.

Its like Sennheiser HD600 with very slight and fulfilling bass boost in IEM.
No harsh peaks, no overly uplifted 2kHz to 3kHz zone. Higher octave air is much more present and imaging is directional cue accurate.
Soundstage seems more natural with width, height and depth.
No lower treble veil and no upper mids intense focus.

It can be a cult favorite pretty easily. Savant with much more maturity.

I think FED30048 is the best mids and treble anybody can get from a BA. It has more extension than ED29689 and 2kHz region is predampened already. It sounds resolving and smooth. Its has more flatter impedance than ED29689+20ohms which kinda get the overall electrical phase to be pretty linear.
In overall, it sounds nearing to electrostatic mids and planar treble.(Stereopravada is right on electrostatic sound from FED30048).

 

[Xymordos]

Isn't the FED30048 out of production though?

 

[IvanNOON]

Isn't the FED30048 out of production though?

Kind of yes and kind of no.
Knowles will make it if you can order 100pc or more

 

[dhruvmeena96]

Isn't the FED30048 out of production though?

It was from start...out of production.
Knowles makes it as per order.
Some time mouser stocks it up(every year)

I had these drivers lying as I used it in hearing aids

For 25 drivers with a rate of 20$(cheaper than mouser)
https://www.digikey.com/product-detail/en/knowles/FED-30048-I04/FED-30048-I04-ND/4030036

2weeks wait time on digikey compared to 4weeks in mouser

 

[eunice]

I will post some when I build the next pair. But it will take some time, maybe a week or two.

Here they are.

I cut the tubes with a scalpel, and I make sure to remove a layer of the shell with the cut. Since we will be adding material we have to remove some so the ear canal does not get too deep.

Then I insert something into the tubes, my syringes habe needles that fit exactly but I recently found out I have dremel drill bits that fit too. It needs to be a tight fit so that nothing can enter the tubes.

After that I just drip some resin with a syringe around the nozzle and cure with a UV flashlight.

Spoiler: Pics

 

[Kiina]

It was from start...out of production.
Knowles makes it as per order.
Some time mouser stocks it up(every year)

I had these drivers lying as I used it in hearing aids

For 25 drivers with a rate of 20$(cheaper than mouser)
https://www.digikey.com/product-detail/en/knowles/FED-30048-I04/FED-30048-I04-ND/4030036

2weeks wait time on digikey compared to 4weeks in mouser

Well 25 is a lot. Anyone in for a group order? Also can you make like a dhruvmeena96 wiki or somehing all the information you drop here is so great but sometimes a bit hard to follow or find again when you need it. By the time i finished my MASM build you already made 40 improvements

 

[dhruvmeena96]

Well 25 is a lot. Anyone in for a group order? Also can you make like a dhruvmeena96 wiki or somehing all the information you drop here is so great but sometimes a bit hard to follow or find again when you need it. By the time i finished my MASM build you already made 40 improvements

You were counting...
OK I will make a wiki soon

 

[Kulgrinda]

My girlfriend is looking strange at me.. Wonder why..

 

[ChrisJensen]

Word of caution: when buying capacitors and resistors for MASM, remember to get through-hole resistors and capacitors! I got some surface-mounted ones thinking they were the same but had trouble soldering them to the drivers and wires!
May be common sense, but I did not know what I was doing in terms of electricals

Also, my ear canals were too small for two 3mm OD tubes. I've gone and purchased two 2mm OD tubes since, and sadly it will affect the sound quality I presume. Just a heads up! [This is for the MASM build btw]