[vale25]

I hate the 3k dip in my graph 

sometimes i think to sell it and buy a new pair

 

[Hubert481]

Excellent - i was searching 6 month to get a HP with a dip between 3 and 4 k.
I hated the really annoying peak of many hd800 near 3-4k

Here is my chart:
http://www.bilder-upload.eu/show.php?file=11738c-1376393265.jpg

I never would sell therefore.

Maybe this diagramm can explain you the reason therefore
http://www.hometheatershack.com/forums/attachments/rew-forum/18726d1264180535-want-build-house-curve-reflects-decrease-hearing-sensitivity-lower-volumes-help-fletcher-munson.gif

 

[vale25]

Excellent - i was searching 6 month to get a HP with a dip between 3 and 4 k.
I hated the really annoying peak of many hd800 near 3-4k

Here is my chart:
http://www.bilder-upload.eu/show.php?file=11738c-1376393265.jpg

I never would sell therefore.

Maybe this diagramm can explain you the reason therefore
http://www.hometheatershack.com/forums/attachments/rew-forum/18726d1264180535-want-build-house-curve-reflects-decrease-hearing-sensitivity-lower-volumes-help-fletcher-munson.gif

I know that diagramm, but when you listen something live, nobody says to the executor " play quietly when you are in 3k hz zone"!
what I mean is that what I know like violin timbre or piano timbre (for example) include my natural major sensitivity  to some frequency

 

[Hubert481]

I had some annoying HD800 during testing in the3-4k-Range, but this one was fine, and the dip between the 3-4k might be the reason.

 

[vale25]

what happened?

 

[vinokurov]

  what happened?

well, so it has turned... ))

 

[vale25]

  well, so it has turned... ))

I don't think. Maybe there was a lucky (or unlucky, I don't know) batch around 20000

 

[vale25]

  what happened?

Does anyone know from direct experience if this difference is audible?

 

[vinokurov]

  Does anyone know from direct experience if this difference is audible?

http://www.amazon.com/review/R2AWS77P0NS2P2/ref=cm_cr_pr_perm?ie=UTF8&ASIN=B001OTZ8DA&linkCode=&nodeID=&tag=
seems, in most cases we are discussing different headphones )))

 

[Andrew_WOT]

 

  well, so it has turned... ))

I don't think. Maybe there was a lucky (or unlucky, I don't know) batch around 20000
 

 
My pair, btw, sound wise they run circles around my T1

 

[vale25]

   
My pair, btw, sound wise they run circles around my T1

another pair around 20000 with a very flat response

 

 

[62ohm]

Mine has just arrived.
 
 

 
 
 
not bad I guess (is there a bad one?)
 
 
edit: here's the zoomed view of the graph
 

 

[thegrobe]

Here's mine:
 

 

[Danno81]

Here's mine:
 

 

[akhyar]

I'm just making a generalization here based from some of the frequency response graphs posted in this thread, the newer HD800s have a peak at 6kHz region, whereas the older HD800s tend to be flatter.
 
The 2 earlier graphs with S/no. 25xxx and 26xxx above also shown a peak at the 6kHz.
 
S/no. 19xxxx

 
S/no: 27xxx