[MuZo2]

Is the headband on it fixed or suspended on elastic? 
It has a elastic, but not sure what you mean by headband is fixed. I read there were two versions but haven't seen a picture of other.

 

[Armaegis]

  Well you're welcome to try if you can get your hands on it.
I'll let you know if I see the headphone re-listed.

I wouldn't even know what would be the proper way to start...
 
Maybe plastic wrap, lightly stretched, somehow adhered with heat?

 
(the thought seriously occurred to me after buying a lumberjack sandwich from the grocery store and seeing them wrap then seal it by rolling the plastic film across a heated platform)

 

[MuZo2]

How are they made, are the etched out on mylar?

 

[khbaur330162]

Copper/Aluminum foil of the 6-12um flavor typically adhered to (or vacuum vapor deposited onto) Mylar/Kapton of the 6-12um flavor. Then an etch mask is created somehow and everything but the circuit is etched away in an acid bath. That, or the manufacturer can selectively vacuum vapor deposit the Aluminum/Copper/Gold/what have you directly to the diaphragm substrate, very similar to how many manufacturers produce RFID antennas.

 

[MuZo2]

http://shop.geistnote.com/1.8Foil.asp#gsc.tab=0

Found source of thin Al foil.
 
 

 

[MuZo2]

Seems PMB 100 is not too rare found another one on ebay today.

 

[JadeEast]

With the sprung PMB100 headband, the headband could possibly cause reflections if it hung down over the back of the driver. There may have been other differences between the two, but it's been a while since there was much discussion about them here. It's great that you've found another. I don't know if we have any idea how rare they might be. They are a mass produced electronic item- there must have been thousands made. 

 

[mechgamer123]

Okay, any of you ortho masters know about these headphones?
http://seattle.craigslist.org/see/ele/4350563853.html

 

[GREQ]

  Okay, any of you ortho masters know about these headphones?
http://seattle.craigslist.org/see/ele/4350563853.html

Nice find.
I almost lol'd though.
Beyerdynamic clone headband construction.
AKG clone inner headband.
Almost Audio Technica'ish style cups.
What a mish-mash of styles.

 

[leeperry]

Looks like a DUAL oem, DK-720 or so.

 

[MuZo2]

 
Its like a closed version of PMB80 

 

[DefectiveAudioComponent]

  Nice find.
I almost lol'd though.
Beyerdynamic clone headband construction.
AKG clone inner headband.
Almost Audio Technica'ish style cups.
What a mish-mash of styles.

 
GermanMaestro (previously PMB, etc ) still uses a very similar headset.
 

  Looks like a DUAL oem, DK-720 or so.

 
It is a Dual OEM. It's a nice find, it's rather unusual. 

 

[GREQ]

 
GermanMaestro (previously PMB, etc ) still uses a very similar headset.

Yup and they've been doing it for years.
I had a Stanton SRS 265 (rebranded - MB Quart 70) and the headband and cable were literally IDENTICAL to my vintage DT990 (same era). 
Clearly someone at Beyer forgot to sign an exclusivity contract with the factory producing those parts.

 

[mechgamer123]

Thanks for the impressions guys. Would it sound good for the asking price? Or do you guys think I should see if I can low-ball him?

 

[leeperry]

They're a major PITA to disassemble and they're not worth the asking price IMHO.