[Bad Username]

Thank you for your response. I personally only use Egger/Dreve stuff. Always good to know

How does the egger resin compare to Dreve for you? Haven't used their resin yet only their lacquer.

 

[ForceMajeure]

How does the egger resin compare to Dreve for you? Haven't used their resin yet only their lacquer.

I still have a bit of Egger left and should receive a new batch of Dreve S/IO soon so I could directly compare.
So far I am very impressed with the Egger stuff. Ultra clear, great consistency, very good impact resistance and the resin is still curing the same even after being stored for more than a year.

 

[yomogi]

I made a rotating machine.
The cost is about 10 dollars.



http://customiem.blogspot.jp/2017/07/blog-post_22.html

 

[Firedrops]

Been considering the CI 30050 and 30120 as alternatives to the 22955, but couldn't find more information on experiences (except for a brief mention here a few years ago). I also suspect they're the same product for different regions.

1. I cannot, for the life of me, find the specs sheet for 30120.

2. There are NO 30050 listings on Taobao, but plenty of 30120s. (Also, suspiciously cheap, many listings at at ~ RMB$6 each).

3. They look identical in photos (weak point, a lot of drivers look identical from the outside).

Has anyone ever played around with either, and what are your thoughts on them against the 22955?

 

[piotrus-g]

Been considering the CI 30050 and 30120 as alternatives to the 22955, but couldn't find more information on experiences (except for a brief mention here a few years ago). I also suspect they're the same product for different regions.

1. I cannot, for the life of me, find the specs sheet for 30120.

2. There are NO 30050 listings on Taobao, but plenty of 30120s. (Also, suspiciously cheap, many listings at at ~ RMB$6 each).

3. They look identical in photos (weak point, a lot of drivers look identical from the outside).

Has anyone ever played around with either, and what are your thoughts on them against the 22955?

I posted information here a couple months ago. With respective graphs

30050 is lower impedance 2-tap version of 22955 with different port location pdf here: http://www.knowles.com/eng/content/download/4732/65490/version/2/file/CI-30050-000.pdf
30120 is similar impedance to 22955 2-tap version with shifted peak response towards 2-3kHz

 

[Firedrops]

I posted information here a couple months ago. With respective graphs

30050 is lower impedance 2-tap version of 22955 with different port location pdf here: http://www.knowles.com/eng/content/download/4732/65490/version/2/file/CI-30050-000.pdf
30120 is similar impedance to 22955 2-tap version with shifted peak response towards 2-3kHz

Oh wow lol I'm so sorry, only saw the ~Feb 21 posts. That's quite informative! Thanks for the share.

Just to confirm, do both the 30050 and 30120 have a non-centered spout, and pretty much look identical?

 

[piotrus-g]

Oh wow lol I'm so sorry, only saw the ~Feb 21 posts. That's quite informative! Thanks for the share.

Just to confirm, do both the 30050 and 30120 have a non-centered spout, and pretty much look identical?

Yes, they both have 1S spout position and they both look identical but they have completely different internals

 

[Firedrops]

Thanks.

The 30050 (and maybe the 30120 as well?) seems to have much better sub-bass extension than 22955, but the 22955 is vastly more popular in IEMs and CIEMs (seems only Flipears used the 30120 before, and it's a discontinued product), any idea why?

 

[piotrus-g]

Thanks.

The 30050 (and maybe the 30120 as well?) seems to have much better sub-bass extension than 22955, but the 22955 is vastly more popular in IEMs and CIEMs (seems only Flipears used the 30120 before, and it's a discontinued product), any idea why?

Where this opinion comes from? 30050 is identical to 22955 in terms of output. 30120 is completely different though.

 

[Firedrops]

Where this opinion comes from? 30050 is identical to 22955 in terms of output. 30120 is completely different though.

My completely uneducated guess, thought 30120 would be more like 22955 due to the impedance.

For 30050 vs 22955, is it the 1S spout position that makes it a bit of an oddball to work with, making it unpopular?

What about the 30120? Is it worse than the 22955 as a sub?

 

[piotrus-g]

For 30050 vs 22955, is it the 1S spout position that makes it a bit of an oddball to work with, making it unpopular?

don't know

What about the 30120? Is it worse than the 22955 as a sub?

see graph

 

[Smasher816]

Hi all! I've been lurking here for quite awhile, but I thought now would be the perfect time to jump in. Over the past couple months, I've been working on 3d printing CIEMs with a Formlabs Form 1+ printer. I think the results have been pretty successful. They are coated with Lack 3.

http://imgur.com/a/BKXm2
http://imgur.com/a/Fip3S
http://imgur.com/a/1ub5v
All fitted with GV, kapton tape removed, green and red dampers.

Wow, very impressive.

I have been looking into CIEMs and this looks like a great way to go. My school's maker lab actually has a Form2 machine and will let us print relatively small things for free. Could you (or someone else) provide a little bit more info on how you created the 3d models?

Edit: It looks like this is pretty similar to your setup and shouldn't be very costly since I already have an arduino and a friend with a DSLR. http://www.instructables.com/id/Build-a-DIY-Desktop-3d-Scanner-With-Infinite-Resol/. Plus something like this for the backdrop http://www.wikihow.com/Create-an-Inexpensive-Photography-Lightbox.

 

[Firedrops]

don't know

see graph

The 30120 seems superior to the 22955, having better bass response while pushing the peaks further into filtered/dampened territory. Are there perhaps other things that can't be captured on the FR graph that make the 22955 better?

 

[ForceMajeure]

The 30120 seems superior to the 22955, having better bass response while pushing the peaks further into filtered/dampened territory. Are there perhaps other things that can't be captured on the FR graph that make the 22955 better?

it all depends on your design in the end. as you can see the 30120 looks good but once you incorporate it with other drivers the midbass to lower mids can be a bit too much if you go for the damping technique as a lowpass...on the other hand on the 22955 have a faster drop but 2k mids comes back so it could add itself to other drivers and make the 2k bump too high... it's all about finding the right balance.

 

[piotrus-g]

it all depends on your design in the end. as you can see the 30120 looks good but once you incorporate it with other drivers the midbass to lower mids can be a bit too much if you go for the damping technique as a lowpass...on the other hand on the 22955 have a faster drop but 2k mids comes back so it could add itself to other drivers and make the 2k bump too high... it's all about finding the right balance.

My thoughts exactly. The 30120 seems to have a lot of mid bass boost, and while the shift to 3kHz is something you'd desire for fullrange driver the question is whether this driver is actually suitable for fullrange applications. It could be good for budget 2-way design probably - something like CI-30120 + WBFK.