[Xymordos]

Can't really post one right now since the testing equipment is on the other computer. But this is with a new 5 driver one I'm testing. CI+ED23147+29689 x2 +30019. Just stuffed my leftover drivers into a shell and made some crossovers for them to see how it goes. But the phase cancelling issue isn't solving itself which is weird. Everything is wired correctly to me. 
 
22955 & 23147 - full range
29689 - 2.2uf 1st order
29689 - 1uf 2nd order
30019 - 1uf 1st order
 
The design isn't meant to be good, but I didn't expect serious phase issues with it though!
 
Edit: Think I got the polarity of one of the tantalums wrong...oops

 

[piotrus-g]

  Can't really post one right now since the testing equipment is on the other computer. But this is with a new 5 driver one I'm testing. CI+ED23147+29689 x2 +30019. Just stuffed my leftover drivers into a shell and made some crossovers for them to see how it goes. But the phase cancelling issue isn't solving itself which is weird. Everything is wired correctly to me. 
 
22955 & 23147 - full range
29689 - 2.2uf 1st order
29689 - 1uf 2nd order
30019 - 1uf 1st order
 
The design isn't meant to be good, but I didn't expect serious phase issues with it though!
 
Edit: Think I got the polarity of one of the tantalums wrong...oops

ufff... so many drivers and a second order... that's a tough one...
Try measuring each driver separately and then two together and three and the rest - you'll be able to control phase and frequency. It will take a lot more time but it's nice when you get something right at first try rather than making shells from scratch just because you've made one mistake.

 

[tranhieu]

   
 
Edit: Think I got the polarity of one of the tantalums wrong...oops

Er... does it even matter? As far as I know reversing polarity of caps on signal path only affects noise ratio, which is unlikely to be audible. It's AC you are working with after all. Never heard of phase shifting though.

 

[Xymordos]

Does the polarity of the tantalums not matter? o.o It said online that if you flipped the polarity it'll destroy the film layer or something...
 
I managed to fix the problem by taking one of the drivers out before, but I couldn't replicate that afterwards -.-

 

[tranhieu]

  Does the polarity of the tantalums not matter? o.o It said online that if you flipped the polarity it'll destroy the film layer or something...
 
I managed to fix the problem by taking one of the drivers out before, but I couldn't replicate that afterwards -.-

What kind of tantalum are you using? I doubt a few volts can spoil the cap. 
 
googling around and I came across this: jimmyauw.com/2010/04/24/observing-inner-and-outer-foil-of-some-popular-capacitors/

 

[Xymordos]

I see, that's good then. I'm using the regular yellow rectangles But I guess if they did spoil there won't even be sound...
 
Still testing the drivers one by one, probably will take the whole day
 
Edit: So it wasn't phase cancelling, but simply the frequencies not covered by the drivers very well...How much does a filter shift a peak?
 
Edit2: It seems like the ED23147 and the CI22955 are cancelling each other on the bass...both have no crossovers and are wired normally!
 
Theoretically if they're all wired correctly, should there be severe phase cancelling? 

 

[piotrus-g]

  Edit2: It seems like the ED23147 and the CI22955 are cancelling each other on the bass...both have no crossovers and are wired normally!
 
Theoretically if they're all wired correctly, should there be severe phase cancelling? 

No, they should amplify their sound - increase quantity.
You've got CI polarity wrong probably - check again with datasheet.

 

[tranhieu]

  I see, that's good then. I'm using the regular yellow rectangles But I guess if they did spoil there won't even be sound...
 
Still testing the drivers one by one, probably will take the whole day
 
Edit: So it wasn't phase cancelling, but simply the frequencies not covered by the drivers very well...How much does a filter shift a peak?
 
Edit2: It seems like the ED23147 and the CI22955 are cancelling each other on the bass...both have no crossovers and are wired normally!
 
Theoretically if they're all wired correctly, should there be severe phase cancelling? 

yeah check the datasheet again. It's literally your CIEM Bible.

 

[Xymordos]

Hah, nevermind, it wasn't sealed properly. Though for some reason the 5k dip is present for all my ED drivers even when tested alone? I'm guessing the dip is due to driver incoherency rather than a phase cancellation

 

[tranhieu]

Mind posting your graph? 

 

[Xymordos]

Will post when I can seal the mouth without breaking any wires

 

[Xymordos]

So before I could even test my second one, my first one suddenly did this...Did the ED driver die or did the WBFK phase get messed up?

Spoiler: Warning: Spoiler!

 

[piotrus-g]

  So before I could even test my second one, my first one suddenly did this...Did the ED driver die or did the WBFK phase get messed up?

Spoiler: Warning: Spoiler!

Well... The top graph is quite good you know. I assume everything after 8-9kHz is not really relevant
In bottom graph the ED is silent.

 

[Negataros]

Hey guys, im quite new to this but im just wondering if we can use those UV lights to cure nails to cure the UV acrylic ? 

 

[Mython]

  Hey guys, im quite new to this but im just wondering if we can use those UV lights to cure nails to cure the UV acrylic ? 

 
 
http://www.head-fi.org/t/430688/home-made-iems/1695#post_10567368