[MuZo2]

Fostex T50rp driver in wooden cup.
 

 


 

 

[BucketInABucket]

 


Fostex T50rp driver in wooden cup.

Looks good! How does it sound though?

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A surprise parcel came in the mail today!

Adastra Stereo Headphones, Model H25. Rather fetching!

They have a screw-on construction hidden by the (terrible) cloth pads. When I opened them up, lo and behold, it's an SFI OEM driver! Feat. horrible disgusting disintegrating foam.

Much better now, all cleaned up! (Yes it's a picture of the other baffle).

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Unfortunately I don't have my 6.3mm to 3.5mm pigtail on me at the moment so I don't have any sound impressions. Also, I'll have to replace that foam I cleaned off with something else - most likely paxmate - before I do anything else. I need to return to my boarding house for that though so further updates will probably come tomorrow night UK time. Here's a frequency response of the stock headphones that was on the box to tide you guy over for now.

Apart from the bass roll-off past 30Hz, it seems to be pretty decent for a vintage!

 

[fattyu]

  Looks good! How does it sound though?

---

 
A surprise parcel came in the mail today!

Adastra Stereo Headphones, Model H25. Rather fetching!
 
They have a screw-on construction hidden by the (terrible) cloth pads. When I opened them up, lo and behold, it's an SFI OEM driver! Feat. horrible disgusting disintegrating foam.
 
Much better now, all cleaned up! (Yes it's a picture of the other baffle).

---

Unfortunately I don't have my 6.3mm to 3.5mm pigtail on me at the moment so I don't have any sound impressions. Also, I'll have to replace that foam I cleaned off with something else - most likely paxmate - before I do anything else. I need to return to my boarding house for that though so further updates will probably come tomorrow night UK time. Here's a frequency response of the stock headphones that was on the box to tide you guy over for now.
 
Apart from the bass roll-off past 30Hz, it seems to be pretty decent for a vintage!

wow. nice find. Sexy Waiting for sound impressions.

 

[BucketInABucket]

  wow. nice find. Sexy Waiting for sound impressions.

I didn't even know it was an ortho before I opened it up: I was expecting a dynamic driver. Every day is a surprise I guess 

 
EDIT: Snapped up a U70 and a T20V2 on ebay just now to give me more to do over the long incoming summer holiday. Now I have 5 projects on my backlog: modding the Adastra headphones that just arrived, further TDS-5 mods, U70 mods, T20V2 mods and modding the other pair of SFI tweeters I have. There goes the HOK 80-2 purchase though, I can't afford it anymore.

 

[GREQ]

A surprise parcel came in the mail today!

Adastra Stereo Headphones, Model H25. Rather fetching!
 

Ah - saw those on ebay - they were a bit expensive for my curiosity. Glad the gamble paid off. Very nice find indeed.

 

[BucketInABucket]

  Ah - saw those on ebay - they were a bit expensive for my curiosity. Glad the gamble paid off. Very nice find indeed.

Have they been sold on ebay before? This is the first one I've found so far and I was able to get the seller to lower the price enough to make me pull the trigger on them. Either way, I guess wikiphonia should be updated!

 

[Igenich]

  I didn't even know it was an ortho before I opened it up: I was expecting a dynamic driver. Every day is a surprise I guess 

 
EDIT: Snapped up a U70 and a T20V2 on ebay just now to give me more to do over the long incoming summer holiday. Now I have 5 projects on my backlog: modding the Adastra headphones that just arrived, further TDS-5 mods, U70 mods, T20V2 mods and modding the other pair of SFI tweeters I have. There goes the HOK 80-2 purchase though, I can't afford it anymore.

Congrats with your surprise! Saw this headphones, but didn't notice that they are ortho
I'm waiting for your impressions about Adastra and T20v2 )

 

[GREQ]

 
Have they been sold on ebay before? This is the first one I've found so far and I was able to get the seller to lower the price enough to make me pull the trigger on them. Either way, I guess wikiphonia should be updated!

I've never seen them before. They must be fairly obscure/rare. Most likely a one-time thing.
They remind me of the AKG K545 

 

[BucketInABucket]

  Congrats with your surprise! Saw this headphones, but didn't notice that they are ortho
I'm waiting for your impressions about Adastra and T20v2 )

Looking at the external packaging, it's impossible to tell that they're ortho so that's understandable. Absolutely nothing on the net about what the hell they were too. I had cash to burn so I thought 'why not.' For the good of the ortho thread! 

  I've never seen them before. They must be fairly obscure/rare. Most likely a one-time thing.
They remind me of the AKG K545 

Must've been my lucky day then! On the listing the seller claims that the last one sold for GBP45 but I can't seem to find any evidence for this on the net. Strange.
You know, now that I compare them with the AKG K545 I can see why 

 

 

[nick n]

  Looking at the external packaging, it's impossible to tell that they're ortho so that's understandable. Absolutely nothing on the net about what the hell they were too. I had cash to burn so I thought 'why not.' For the good of the ortho thread! 

Must've been my lucky day then! On the listing the seller claims that the last one sold for GBP45 but I can't seem to find any evidence for this on the net. Strange.
You know, now that I compare them with the AKG K545 I can see why 

 

Incredible luck there. Very very nice score. Like the look of those a fair bit. That 4 - 300 ohms matching comment on the box is a little odd.

 

[MuZo2]

 
 


 

They look similar to drivers in Watson Mod.930

 

[BucketInABucket]

 
Incredible luck there. Very very nice score. Like the look of those a fair bit. That 4 - 300 ohms matching comment on the box is a little odd.

Looks like my ortho hunt I was talking about with you came to fruition after all 

 after all that though, my (paypal) wallet is feeling mighty light. The bottom pair is something I bought to experiment with my other pair of SFI tweeters.

(already featured on the head-fi fb page)

  They look similar to drivers in Watson Mod.930

Yea, I would assume they share the same Sawafuji OEM along with others like the ATH-2 and SS-L55. Hoping this implementation will sound great! It's definitely a unique one and its vented and already comes factory-damped with some foam (although it disintegrated) so I'm hoping for a good impression.

 

[dBel84]

I suspect a Russian H-21C driver based in the name and appearance

 

[GREQ]

 

  They look similar to drivers in Watson Mod.930

Yea, I would assume they share the same Sawafuji OEM along with others like the ATH-2 and SS-L55. Hoping this implementation will sound great! It's definitely a unique one and its vented and already comes factory-damped with some foam (although it disintegrated) so I'm hoping for a good impression.

Essentially the same, but the Watson Mod drivers are uniquely encased in plastic instead of the more common aluminium.

 

[Drakkard]

I suspect a Russian H-21C driver based in the name and appearance

Н-21С is early 90s. This seems to be much older