[Silverprout]

  The CI(sonion 2000 series similarly) has very much bass at mid-bass region especially. A intervention needed sometimes but they are really powerful. Very old but good.

The mid-bass bump that give impactfull bass... but destroy overall tonality ?

 

[tsn141]

 
The mid-bass bump that give impactfull bass... but destroy overall tonality ?

Exactly,
The worse thing is, sometimes, it destroys the stable operation at bass and mid region, if it occurs someone extinguish the fire, he will be a hero.

 

[Silverprout]

  Exactly,
The worse thing is, sometimes, it destroys the stable operation at bass and mid region, if it occurs someone extinguish the fire, he will be a hero.

hum...

 
A tonality alteration... not only !
 
A lot of codecs as MP3 are based on perceptual algorithms (this is why they sound not good with inaccurate headphones

)... like the mask effect, some frequencies can be masked by others.
Rise some frequencies can hide others and induce a loss of details ?
 
http://en.wikipedia.org/wiki/Auditory_masking

 

[tsn141]

 
hum...

 
A tonality alteration... not only !
 
A lot of codecs as MP3 are based on perceptual algorithms (this is why they sound not good with inaccurate headphones

)... like the mask effect, some frequencies can be masked by others.
Rise some frequencies can hide others and induce a loss of details ?
 
http://en.wikipedia.org/wiki/Auditory_masking

The masking is very and very very improtant phenomenon to my opinion, todays sound industry mostly based on it(recordings, theatre effects(dolby digital i.e.), some concert effects and usage of compressor(as I know, not sure completely) etc.). Therefore, in that area, it also important.

Too much bass with long decay time, it will be mask other sounds at midrange and bass( comes after earlier bass kick).
 
to my 2 cents

 

[Silverprout]

  Too much bass with long decay time, it will be mask other sounds at midrange and bass( comes after earlier bass kick).
 
to my 2 cents

 
You must understand precisely what is done here to tune your sound properly... 

 

[Japheel]

Subbed

 

[crash88]

So I started doing my own reshells all in clear. What I would like to know is how solid colors are done? Like black and white.

 

[RealSpark]

Reshelled my 5 years old SE 215 into custom. 

 

[RealSpark]

What do you use for colors?

acrylic dye, from local Arts Friend shop.

 

[RealSpark]

How's bass compared to universals and without vents?

well, I see there is still a huge space behind so I didnt bother to vent it. Ans the original shell is alsk not vented.
The bass is definatly more with custom.

 

[MuZo2]

It because the ciem shell is bigger than original shell? I think the way for DD reshell is to do with original shell intact to keep same sound.

 

[RealSpark]

Yeah I know that, but I was wondering since most if not all hybrid CIEMs require venting to work correctly.

hybrids normally use like 8mm or 10mm dynamics right? Which needs about 5 times of space of the driver size. The 215 is only like 5mm if I'm not wrong. It seems not affecting sound that.
Maybe I should upload a FR comparison later.

 

[RealSpark]

It because the ciem shell is bigger than original shell? I think the way for DD reshell is to do with original shell intact to keep same sound.

I have seen this before. Why not just make a custom sleeve...

 

[MuZo2]

I think with custom sleeve you dont get right insertion depth.

 

[Silverprout]

hybrids normally use like 8mm or 10mm dynamics right? Which needs about 5 times of space of the driver size. The 215 is only like 5mm if I'm not wrong. It seems not affecting sound that.
Maybe I should upload a FR comparison later.

Dynamics drivers need to be depressurized before and after the membrane...
If the pressure is not equalized properly the membrane is not centered to her neutral position (on the excursion axis).
And the transducer don't work in his linearity excursion zone.
 
PS : Nice job, your shells are beautifull.