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Home-Made IEMs - Page 416

post #6226 of 6260
Quote:
Originally Posted by Xymordos View Post

Is it that the bass decay is slightly longer on one of them?
notice different shape of bass decay. It's enough to change sound quite a bit.
There are still other means to measure difference, the change in sound signature is big as well, at least for me.
post #6227 of 6260
Kinda offtop in the current conversation but damn this zebrano is looking good biggrin.gif one thing tho. i cants get the really clean finish to my ciems with the fotoplast lacquer and its integrated brush. Every time there is some marks and irregularities and same on the flat surface of the faceplate... do you guys doing some sanding and buffing after the use of this lacquer? And same question on glycerin or glysol dreve, when i give the ciem an uv bath in those my shell get some bubbles on it everywhere (very little stuff) that i clean up with the exacto knife. I guess its not really normal. I will try to use some acetone the next tome to clean up the sticky layer of the shell. Lets see what it does!

Edited by sanekn - 3/18/17 at 6:00am
post #6228 of 6260
Quote:
Originally Posted by piotrus-g View Post


notice different shape of bass decay. It's enough to change sound quite a bit.
There are still other means to measure difference, the change in sound signature is big as well, at least for me.

 

Interesting - would leaving an air hole in the shell like the hybrid ones have the same effect on the vented BA as an open shell?

post #6229 of 6260
Quote:
Originally Posted by Xymordos View Post

Interesting - would leaving an air hole in the shell like the hybrid ones have the same effect on the vented BA as an open shell?
technically, yes. Obviously the size of the hole would affect the response but you'd have to observe how. There will be noticeable notch at the resonance frequency for smaller sized bores
post #6230 of 6260
Quote:
Originally Posted by sanekn View Post

Kinda offtop in the current conversation but damn this zebrano is looking good biggrin.gif one thing tho. i cants get the really clean finish to my ciems with the fotoplast lacquer and its integrated brush. Every time there is some marks and irregularities and same on the flat surface of the faceplate... do you guys doing some sanding and buffing after the use of this lacquer? And same question on glycerin or glysol dreve, when i give the ciem an uv bath in those my shell get some bubbles on it everywhere (very little stuff) that i clean up with the exacto knife. I guess its not really normal. I will try to use some acetone the next tome to clean up the sticky layer of the shell. Lets see what it does!

I go back and fourth with Lack3.  Lately, I have been getting better results with polishing the fotoplast rather than lacquering.  I love the ease and finish of Lack3 but, like you, I can never get a uniform finish and I haven't been able to polish it back to it's original luster.  I don't think it is designed to buff out.  I hear that the dipping method is the only way to go, but I haven't tried that yet.  I get the best results when I lightly sand and clean the whole exterior of the shell prior to lacquer.  

 

Great looking ears though!  Love that zebra!

post #6231 of 6260
Quote:
Originally Posted by Squirg View Post

I go back and fourth with Lack3.  Lately, I have been getting better results with polishing the fotoplast rather than lacquering.  I love the ease and finish of Lack3 but, like you, I can never get a uniform finish and I haven't been able to polish it back to it's original luster.  I don't think it is designed to buff out.  I hear that the dipping method is the only way to go, but I haven't tried that yet.  I get the best results when I lightly sand and clean the whole exterior of the shell prior to lacquer.  

Great looking ears though!  Love that zebra!

You need to make one of these, it rotates and if you use Lak 3 it's a must! It will solve the problem for those having issues coating with Lak3. I posted a couple times about how easy it is to make this.

post #6232 of 6260
Quote:
Originally Posted by Shilohsjustice View Post

I installed a drawer on my work bench today!!! What's your workstation look like????

I envy your organization!
post #6233 of 6260
anyone wants this occ silver plated cable with 2.5 balanced jack? it's free only 2.15 euro postage thanks
it's kinda short though from soldering and unseldering and trimming about 1m or something

post #6234 of 6260

So I finished my first CIEMs last night, but I have a couple of problems.  Firstly, I have a lot of background hiss.  Admittedly, I'm only running them directly off of my cellphone - no standalone DAC and no amp - but it is driving me a bit nuts.  Is there anything I can do to get rid of the background noise?  My second issue is that I can faintly hear one of the local AM radio stations, but I think that's because I used wire with very little shielding to make my cable.  I'll try some different wire and see if that helps.

post #6235 of 6260
Quote:
Originally Posted by Squirg View Post

I go back and fourth with Lack3.  Lately, I have been getting better results with polishing the fotoplast rather than lacquering.  I love the ease and finish of Lack3 but, like you, I can never get a uniform finish and I haven't been able to polish it back to it's original luster.  I don't think it is designed to buff out.  I hear that the dipping method is the only way to go, but I haven't tried that yet.  I get the best results when I lightly sand and clean the whole exterior of the shell prior to lacquer.  

Great looking ears though!  Love that zebra!

Thank you for your advice will try it along with the turning jig of shiloh smily_headphones1.gif (thank you too!)
post #6236 of 6260
How do you make bass even on both l and r iems?
post #6237 of 6260
Quote:
Originally Posted by myemaildw View Post

How do you make bass even on both l and r iems?

You use measurements and make sure both sides have the same configuration. That the drivers are not defective, same venting if you use it, same tube length, damping material and so on...

post #6238 of 6260
1) drivers not defective
2) perfect seal of tube with driver
3) perfect seal at tip
4) dampers not defective
5) perfect seal of ciems on both sides.
post #6239 of 6260
Hi! I'm planning to get into building CIEMs so I'm starting to arm myself biggrin.gif

Does anybody know if this will be suitable:
28515.jpg
http://www.proxxon.com/en/micromot/28515.php?list
It's about 50€.

I think this guy uses Proxxon equipment in his video starting at 0:24.
https://youtu.be/qxUKRjgJjS0
post #6240 of 6260
Quote:
Originally Posted by bartzky View Post

Hi! I'm planning to get into building CIEMs so I'm starting to arm myself biggrin.gif

Does anybody know if this will be suitable:

http://www.proxxon.com/en/micromot/28515.php?list
It's about 50€.

I think this guy uses Proxxon equipment in his video starting at 0:24.
https://youtu.be/qxUKRjgJjS0

 

Yes, it looks like it should do the job. It appears to be similar to my Wen rotary tool:

 

https://www.amazon.com/WEN-2305-Rotary-Tool-Shaft/dp/B003BYRFH8

 

With my Wen it has a flexible extension shaft that makes using it around smaller fine objects much easier. If the Proxxon has that I highly recommend getting it.

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