dhruvmeena96
Headphoneus Supremus
I have been waiting for something for the past 2 years. Never reached to my home
I think, I might have true Final 3 design
I will try and let you guys know
Last edited:
Home-Made IEMs
- Thread starter Bilavideo
- Start date
I think, I might have true Final 3 design
I will try and let you guys know
ignotus
New Head-Fier
- Joined
- Aug 12, 2016
- Posts
- 12
- Likes
- 17
Hi guys, maybe someone has noticed this already, but that damper extraction tool they sell is just a thread tap. Just look for a 2 mm-diameter thread tap and you'll find them for less than 1/2 the price of the 'specialised' tool. You may need to grind down the pointy tip a bit (I think that's all they do before selling them as a 'specialised' tool), but you can do that in 2 minutes with a file.
BTW, Soundlink has some pretty tempting discounts on BAs right now...
BTW, Soundlink has some pretty tempting discounts on BAs right now...
@Ivan TT, @eunice, @dhruvmeena96, and everyone else.
Here is the list that I have gathered so far to build the DIY-IEM. Most of you have built these IEMs, so the list will look familiar. I have to confess that I have not searched deep on these forums for a materials list, in any case, I would like for the community to give me your suggestions and comments to enhance this shopping list. The prices are in US dollars and links point at Amazon USA and Aliexpress-soundlink.
Total: $283.88
Impression and Casting materials
IEM Cable and accessories
Here is the list that I have gathered so far to build the DIY-IEM. Most of you have built these IEMs, so the list will look familiar. I have to confess that I have not searched deep on these forums for a materials list, in any case, I would like for the community to give me your suggestions and comments to enhance this shopping list. The prices are in US dollars and links point at Amazon USA and Aliexpress-soundlink.
Total: $283.88
Impression and Casting materials
- DIY Ear impression kit (4 sets)
- Acrylic Mold Resin - Lisa Pavelka magic gloss UV resin (Soundlink has other options for Resin Acrylic)
- $52.99 x 6oz - Ebay_Link
- $40.72 x 6oz - Amazon_link
- Negative mold Clear/translucent SORTA-Clear 37 (Smooth-On) - You can use Agar-agar as well and is cheaper
- $44.36 by 2Lbs - Amazon_Link
- Rotating display Battery
- $6.48 - Amazon_link
- Natural Soy Wax or Clear-Seal Silicone Coating (Lacquer or Nail Polish)
- Natural Soy Wax
- $10.85 - Amazon
- Casting ring cup for Negative mold
- $2.55 x 2=$5.10 - Aliexpress
- UV Light Nail machine
- $25.99 - Amazon_link
IEM Cable and accessories
- Armatures Drivers
- 2PCS Bellsing 10013 Balanced Armature Driver 6 Way BA Full Range
- $65.86 (Pair) - Aliexpress_Link - As of 08/26/2019 the price shown has a 26% discount
- Zobel network materials (Cap + Res) are no more than $5.00
- Sound Dampers filters
- $2.46 x 7=$17.22 to get all of them just in case
- Aliexpress_link
- Damper install Tool_Link - $5.01
- MMCX Terminals
- Female terminal
- $3.82 (2p) - Aliexpress
- MMCX headphone cable 64in long
- $28.00 - Aliexpress
- Enameled copper wire 31awg - Red & Green
- $5.37 x 2=$10.74 (pack of 10 shorts) - Aliexpress
- OuM Kit Accoustic tubes
- Acoustic tube Ø 2,0mm outside / Ø 1,2mm inside
- Acoustic tube Ø 3,0mm outside / Ø 2,0mm inside
- $1.73 - Aliexpress
wolkegeist
100+ Head-Fier
@dhruvmeena96 I listen to the latest tubeless design from TXN labs in VN, it has slightly v-shape sound with strong bass/treble extension. I think it goes something like this. He told me that he use a combination of sonion and knowles, so it’s my guess:
He used fostex dynamic driver (which i believed are also used by Kumitate’s lab), with 4th order band-pass for the whole thing. Quite an interesting design. I hope it’s some kind of inspiration for you guys.
He also has an 1 BA set up, which he used a PER 88-1626a, I think it’s the driver used in old ER4S, and with zobel. Sound quite fantastic, good bass response, maybe down to 80Hz, surprizingly and incredibly good treble extension too. One problem is some small hiss, I’m quite surprise because my modifies O2 amp is very quiet, yet I heard tiny hiss.
He used fostex dynamic driver (which i believed are also used by Kumitate’s lab), with 4th order band-pass for the whole thing. Quite an interesting design. I hope it’s some kind of inspiration for you guys.
He also has an 1 BA set up, which he used a PER 88-1626a, I think it’s the driver used in old ER4S, and with zobel. Sound quite fantastic, good bass response, maybe down to 80Hz, surprizingly and incredibly good treble extension too. One problem is some small hiss, I’m quite surprise because my modifies O2 amp is very quiet, yet I heard tiny hiss.
Last edited:
I think that's enough for a start, it would be better if you use a nicefit resin, lacquer like lack3 (dreve) or lacquer nicefit
Don’t try the Lisa pavelka stuff, it just is no fun to work with. I started with it and it was just a waste of time.
This resin is kinda soft, and gooey, you cannot make proper shells with it.
Also it yellows pretty quickly, whether you expose it a little too long or just by a little sunshine. It’s no good for ciems.
You have to use Dreve, Pro3dure (They are very good, I use them on a regular basis ) , Egger or Nicefit (I have not tried, but there are credible accounts that it’s good
Also you’ll need glycerin, isopropanol, loctite 401 and epoxy glue.
You need it to fully cure the inside of the shell. If the resin cures in contact with air a kind of a tacky layer remains. So after you cure the outside of the shell you pour out the resin to get a hollow shell. The inside of the shell is not fully cured after pouring out the resin. So you pour in glycerin and cure again to have a shell with fully cured inside and outside.
401 is the superglue to connect the tubes to the driver. This is the most important glue to get right of the entire build. While inserting/removing the CIEMS in the ears you create air pressure and the connection between tubes and the drivers need to withstand that. Also since you fill up the ear canal with resin the glue needs to not dissolve in resin. I have tried many different glues and loctite 401 is the only one that is strong enough.
For the face plate you cannot use it though. Like many super glues loctite 401 creates a white haze which does not look good when used for the faceplate. Epoxy glue usually does not do that, so I use 2 component epoxy glue for the face plate.
Lacquer is for creating a smooth surface finish. If the surface is not smooth your skin will not relax after inserting the CIEMs and you will feel pressure points after wearing the CIEM for longer time. But other than lacquer you can also polish with Dreve Polishing Compound and polishing wheels.
tomekk
100+ Head-Fier
Guys, do you have any information about Bellsing? Soundlink stopped distributing them? Colsan? Any info?
dhruvmeena96
Headphoneus Supremus
Directly from bellsing... That's the only route.
Soundlink has 5 driver and 6 driver bellsing still
wolkegeist
100+ Head-Fier
Anyone know which drivers ATH LS400 used? I was given 2 pairs of the mid/treble drivers of them, and the person who gave me didn’t know which driver are they. I think it’s Sonion 1723WT03, but I’m not sure. The BA list doesn’t have LP400 included.
Last edited:
Ivan TT
500+ Head-Fier
Try 10Ohm 20uF zobel, it gives pretty much straight line impedance except for a slight notch around 3.5kHz.
dhruvmeena96
Headphoneus Supremus
Done
It works without artifact like what was in with 40uF.
Nice
I did 9ohms and that is sweet spot(5ohm + 2ohm + 2ohm). 3kHz slight notch is still there, but less pronounced with 9ohms
So now we have ED29689 zobel. That will work with Sonion 2389, 2323 and 2354 as they all share same type of specs and same type of impedance plots
Last edited:
wolkegeist
100+ Head-Fier
Small question, I found a very strange driver, code PER88-1626a, it is some sort of drivers used in etymotic ER4S, as I was told. Anyone has information about it? I think it’s a special version of ED-29689 or sonion 2323.
Users who are viewing this thread
