[ChihhaoChao]

Hi, this issue is obvious on mine (SN:00108).
Roughly estimated, my right earcup can swivel about 25[size=small]°[/size] outward to the right, 3[size=small]°[/size] inward to the left; my left earcup can swivel about  3[size=small]°[/size] outward to the left, 25[size=small]°[/size] inward to the left right.
I think the rotatable range is identical, but the placement of the bearing base is quite odd.
 

 

[driver 8]

It's fairly pronounced on mine (198) as well. 

 

[MuppetFace]

It's nice to know I'm not the only one! Whew! That's been the only issue bugging me on the TH900. Well, that and the fabric cable. But then I just hate fabric wrapped cables. : P

 

[geetarman49]

Quote:

Hi, this issue is obvious on mine (SN:00108).
Roughly estimated, my right earcup can swivel about 25[size=small]°[/size] outward to the right, 3[size=small]°[/size] inward to the left; my left earcup can swivel about  3[size=small]°[/size] outward to the left, 25[size=small]°[/size] inward to the left right.
I think the rotatable range is identical, but the placement of the bearing base is quite odd.
 

is this because they used 'universal' parts for both left & right sides (as opposed to mirror imaged)?
 
for $2k or $2k+ i would have expected greater care/better control of tolerances.

 

[MuppetFace]

Yeah, the swivel issue is weird, and it's not something that should be present at any price point. Though I will say it's not uncommon. Plenty of $1500+ headphone have QC issues they shouldn't have.

 

[rgs9200m]

I don't see any swivel or movement issues on mine (# 0190). I'm not sure I can visualize what is described here. I have no ergonomic or quality issues with mine at all. And the comfort and position of the earcups seems fine with me. I wouldn't change a thing. The range of tightness adjustments works well also.
I think they have the edge in comfort over my 009s which clamp (just slightly) more firmly.

 

[ysyung]

Mine had the same problem before, and I did send back for repair. Very nice customer services. It is Perfect now!

 

[MuppetFace]

For those who can't visualize the issue:
 
Imagine holding the headphones in front of you. When you push both cups outward from you like this:
 
 
( \      / )
 
(top down perspective)
 
One side goes further out than the other. Alternatively when you pull them inward toward you like this:
 
 
( /      \ )
 
(top down perspective)
 
The other opposite side goes further inward than the other. Think of it like someone having "two left feet" or something. I think they're using the same adjustment parameters on the swivel hinge for both sides, rather than a mirror of the parameters, so they both end up having skewed or wonky swivel. When you set it down on a hard surface it sometimes "flops" to the left or right as a result.
 
Honestly, it's not a big enough deal for me to send mine all the way back to Japan from the US to get fixed.

 

[gkanai]

A bunch of us in Tokyo are going to go to the Tokyo FUJIYA AVIC Summer Portable Audio Event. If Fostex is there, and they should be, to promote the HP_P1, we can ask them about this.
 
http://www.head-fi.org/t/615395/tokyo-fujiya-avic-summer-portable-audio-event

 

 

[Ahzari]

Hmm i need to check mine... 
 
Thanks gkanai for looking into it..

 

[jude]

This is the video I made in response to a question I received about the TH-900 pivots (on the one I have):
 
http://www.youtube.com/watch?v=dHWky1Bvoic

 

[tehmom]

My cups do not swivel evenly either, but they fit me all right.

 

[Kees]

Quote:

My cups do not swivel evenly either, but they fit me all right.

OK mom, we get it....

 

[DavidMahler]

mine do not swivel evenly either.......
 
seems that no one's is gonna swivel evenly.

 

[AppleheadMay]

Either this is well on topic or completely off ...