[whirlwind]

   
All are tested.
You have to request your copy, with your serial number and they will email you the graph

What if mine is a 2nd hand pair with a serial number in the 19XXX ?

 

[akhyar]

What if mine is a 2nd hand pair with a serial number in the 19XXX ?

Well, no harm requesting cause it never cost you any money.
Just go to the link provided and fill up all the info required

 

[DanTheMan1]

Here's my new pair i bought about 3 weeks ago, 30062 serial, looks decent to me, thoughts? http://i.imgur.com/e9YETvT.jpg
 
loving them so much with the fostex hp-a8c

 

[Dogmatrix]

Looks very normal to me , all the bumps and dips in the usual places

 

[ziggysp2000]

I just recently got some HD800, serial 295XX. I went to the website looking for the product registration to get my frequency response graph, and when that didn't work I clicked the link in this thread and it just brings me to the HD800 product page, showing specs and photos and such.
 
Did Sennheiser cease offering this service? 

 

[ziggysp2000]

Ok...soooo, I did manage to register the product, but it wasn't easy. I'm in Canada, and when type in sennheiser.com, it brings me to the Canadian version of the site. Under services, there was no'register your product'. I finally got to the German version (.de) ...and it was there...
 
So.. confusing... but figured it out. Figured I'd post if anybody else runs into this problem.

 

[ziggysp2000]

So here is my HD800 curve. Sure, the treble bump is there, but the bass is a bit elevated as well. The mids are remarkably flat. Does this count as a 'neutral V curve'?
 

 

[poikkeus]

Your "curve" is very typical - and very neutral. I've seen lots of these curves, and I haven't seen one that's completely flat. 

 

[listen4joy]

here is my graph of my new hd800. serial 308XX
 

 

[wink]

OOOOH..! I like that one..

 

[inter voice]

  OOOOH..! I like that one..

+1. Mine got a 6K bump.

 

[Dark_wizzie]

That one looks like my graph. Mine has slightly more bass at the end of the graph though.

 

[Fugue]

Here is mine:
 

 

[cub3]

Here's my HD800 graph, serial 308xx. They sound incredible... 

 

[Mentis]

Here's mine, a slight dip on the 8k compared to others in the 30XXX's...  BTW, seems everything after 30XXX have no 6k peak