Home-Made IEMs
Oct 17, 2020 at 3:06 PM Post #11,731 of 14,009

johnchpark

Head-Fier
Joined
Feb 8, 2019
Posts
73
Likes
124
Location
South Korea
This is the left side before closing the shell (green) and after (purple). Makes me think when i pushed the components in, some passives ended up touching

UPDATE
went in and realized one of the fullrange drivers got unhooked.
Fixed.
Blue line is CIEM form and green is UIEM (subbass roll off due to fit)
 

Attachments

  • FA682AB4-40FD-4FAA-ACDA-64EBD647CD2F.png
    FA682AB4-40FD-4FAA-ACDA-64EBD647CD2F.png
    107.9 KB · Views: 0
  • EB3971A1-0258-4817-B87F-9DD6EE962D1D.png
    EB3971A1-0258-4817-B87F-9DD6EE962D1D.png
    105.2 KB · Views: 0
Last edited:
Oct 18, 2020 at 6:12 AM Post #11,736 of 14,009

JEHL

500+ Head-Fier
Joined
Apr 16, 2020
Posts
815
Likes
574
Location
Tegucigalpa, Honduras
Right from the link you posted. Yes, it's a BA
I mean I know it's made by Knowles. I know it says Balanced Armature in the spec sheet.

Is just the shape that throws me off since It seems to be one of a kind of sorts.

Claims full range but apparently another spec sheet shows quite a bit of a distortion spike at 2kHz, so I'd imagine this would make a good woofer?
 
Oct 21, 2020 at 2:46 AM Post #11,741 of 14,009

gregeagle

New Head-Fier
Joined
Jun 20, 2019
Posts
37
Likes
27
Location
Austria
thanks!

so do you mix the acryl ink with the liquid resin before casting, or do you paint over the hardened resin before lacquering?
after mixing colour to resin.. let it sit for a while so the bubbles who apeared during mixing remove!! but be aware...if you wait to long the color might sit back to the bottom!
then do the casting shells...
 
Oct 21, 2020 at 4:20 AM Post #11,742 of 14,009

johnchpark

Head-Fier
Joined
Feb 8, 2019
Posts
73
Likes
124
Location
South Korea
Thank you!
Just ordered a few Daler-Rowney FW Pearlescent acryl inks.
Seems like 1 part ink to 10 part resin’s what ppl use?
Does it come out as solid color or translucent?

after mixing colour to resin.. let it sit for a while so the bubbles who apeared during mixing remove!! but be aware...if you wait to long the color might sit back to the bottom!
then do the casting shells...
 
Oct 21, 2020 at 8:28 AM Post #11,743 of 14,009

Bassiklee

100+ Head-Fier
Joined
Jun 27, 2017
Posts
197
Likes
90
Location
Florida
If your ink is an opaque, it will either not work, or take a long long time to form a shell. I have a LED box with eight LED bars in it. It's WAY too strong. I can form shells in 12 seconds with clear resin. Using black, it's 20 min, and black resin is still translucent, barely.

You will have much better luck with translucent inks than with opaque stuff.
 
Oct 21, 2020 at 8:42 AM Post #11,744 of 14,009

musmecca

100+ Head-Fier
Joined
Jun 1, 2020
Posts
106
Likes
66
Location
Memphis, Tn
If your ink is an opaque, it will either not work, or take a long long time to form a shell. I have a LED box with eight LED bars in it. It's WAY too strong. I can form shells in 12 seconds with clear resin. Using black, it's 20 min, and black resin is still translucent, barely.

You will have much better luck with translucent inks than with opaque stuff.
I second this. I usually just do clear or lightly tinted shells then treat the inside of the shell for the desired effect. These purple ones were clear. I simply used metallic nail polish to cost the inside, then floated polish in water to get to the spots a brush couldn't reach.
 

Attachments

  • 20200724_123106.jpg
    20200724_123106.jpg
    1.5 MB · Views: 0
Oct 25, 2020 at 5:28 AM Post #11,745 of 14,009

HenacanPodwell

New Head-Fier
Joined
Oct 9, 2018
Posts
35
Likes
6
Location
Malaysia
Hello everyone, I have been trying to figure out how to do a low pass RC filter but I just couldn't even after days of trying and reading, maybe I am just dumb.
So I tried to do cutoff frequency at around 800 hz at 22955. Which I used 20 ohm connected series to the 2 pin, and then parallel 10uf.
Can someone helps pointing out my mistake?
Thank you!

Edit: Solved
 
Last edited:

Users who are viewing this thread

Top