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Orthodynamic Roundup - Page 1426

post #21376 of 23373
Quote:
Originally Posted by MDR30 View Post

 

Well, the cup design and the R.P.D. abbreviation was what sent some tingling down my spine - an OEM Fostex "Regulated Phase Dynamic"? But as far as I know, there never was an 150 ohm Fostex (that impedance is typical to Yamaha and PMB).


And once the lid is removed, we can see the driver!

 

 

 

Yes, most likely the ubiquitous Sawafuji/Audio-Technica/Pro 30 driver. It's glued in place. The construction of the cup makes modifying quite easy - it only takes a minute to test different types of damping.

khbaur has an Audio Technica driver that is 150 ohm in his rare ATH-M2 I think it was called. It's posted up in here. The only 150 one i have heard of in that style is the ATH, well also the HP-50 type but that doesn't have the housing ring around the outside does it ? ( don't think so but I forget ATM ).

 

Link up here.

 

Can you feel how many holes there are underneath the damping there? Or shine an LED flashlight through . It would narrow it down.


Edited by nick n - 4/3/13 at 5:39pm
post #21377 of 23373
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Edited by Beocord - 10/27/13 at 2:53am
post #21378 of 23373
Quote:
Originally Posted by Beocord View Post

Anyone got info on ath-2100? Ive ripped those a part and these seem exactly identical to ath-2

 

Thought about bidding on them, but also thought 35 € a bit too high even if they were orthos. Nice to know they turned out ok in the end.

post #21379 of 23373
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Edited by Beocord - 10/27/13 at 2:54am
post #21380 of 23373
Quote:
Originally Posted by Beocord View Post

Definately worth the price biggrin.gif shame i like the retro look too much, or i would mod them to pieces. It would be cool to recable those with 3.5mm jack. Would make kickass retro portables...even though naturally quite power hungry. Less than fostex t20...somewhere around hd600 id say. Without being restricted on simple damping mods, those could be some really extraordinary headphones. Nonetheless these headphones made me a believer on orto technology. Nicely narrows my next upgrade between hifiman and audeze smily_headphones1.gif


Do the mods, you might just find that the Himans or Aud's are not really an upgrade at all;)

post #21381 of 23373

35 € for an old ortho is pretty dear. I think you should try more mods to get the full worth of your money.

post #21382 of 23373

Quite enjoy the convolved HOK now. Big step up from what conventional modding could do - though it has to be said that the digital bass boost needed for the HOK to reach the level of my bass-lite HP-50 does distort at higher levels around 100 Hz or so. Still, quite good for lower-volume listening.

 

No idea why the convolution from one phone to another worked so well here but has failed with some other phones. For sure the channel balance convolution works almost perfectly, so it may have something to do with similarities in pad and baffle-ear chamber dimensions between the target and source. Investigations ongoing, and, as always, carried deep into the morning hours.


Edited by vid - 4/3/13 at 8:32pm
post #21383 of 23373

Listening to my new'ish yamaha YH-3 and I'm digging the sound but I'm just not the basshead i used to be. won't pass judgment until i have used them for a few more months. Any suggestions for replacement pads? They are worn and I'm sure that's affecting the seal to my ear. I might try to find a new home for them and nice new pads would be a big plus.

 

Also does anyone know of a good product to clean headphones? I have a growing collection of audio gear and some of the used stuff i get can be outright filthy. Armorall works but i dislike the oily feel and smell it leaves. 

 

Edited to better reflect my thoughts.


Edited by bootdsc - 4/4/13 at 5:24am
post #21384 of 23373
Quote:
Originally Posted by bootdsc View Post

Listening to my new (vary used) yamaha YH-3 and I'm digging the bass but not much else, won't pass judgment until i have used them for a few weeks. Any suggestions for replacement pads? They are worn pretty bad and I'm sure that's affecting the seal to my ear.

 

You are aware that the general recommendation with those phones is to mod them inside the cups? Though usually the modding aims at reducing bloated bass, so if you prefer the bass as it is, that sort of modding may not be needed.

 

Someone recommended the Sony V150 pads, but I've not tried them. The Sennheiser HD 25 pads might do as well, but I've not tried them either.

post #21385 of 23373

Thanks for the pad suggestion, guess ill have to find a pair and measure them.  

post #21386 of 23373

MDR30 has experience with V150 pads on the HP-3 (same construction as the YH-3).

 

http://www.head-fi.org/t/111193/orthodynamic-roundup/20100#post_8474277

post #21387 of 23373
Quote:
Originally Posted by bootdsc View Post

Listening to my new'ish yamaha YH-3 and I'm digging the sound but I'm just not the basshead i used to be.

 

Edited to better reflect my thoughts.

 

Since you edited your post, let me rephrase my response as well.

 

Put felt into the cups. It flattens out the bass response. Instructions for this are throughout the thread, it's a staple mod.

 

Oh, and I see you're already selling them. I hope $95 wasn't what you paid, and if it was, you probably won't manage to get it back. Should perhaps mod them and see what they can do for you.

post #21388 of 23373

Final pics of the Hosiden DH-80-S.

 

This is what it looks like with the chrome ring removed. Lid screwed down, and ring in place, it's virtually a closed design.

 

 

 

Original damping was a piece of whitw felt and foam. The foam had disintegrated so I replaced it with two new layers. Originally the Hosiden sounded dull and honky. Did not improve much fully open. I tried a small reflex dot for treble extension and the damping on the picture and the sound became quite nice. The let-down are the pads - vinyl and with a loose fit. Some quick experiments with HP50 pads that was lying around indicated that the right pads could make this a quite enjoyable headphone.

 

 

 

 

Quote:

Originally Posted by nick n View Post

khbaur has an Audio Technica driver that is 150 ohm in his rare ATH-M2 I think it was called. It's posted up in here. The only 150 one i have heard of in that style is the ATH, well also the HP-50 type but that doesn't have the housing ring around the outside does it ? ( don't think so but I forget ATM ).

 

Link up here.

 

Can you feel how many holes there are underneath the damping there? Or shine an LED flashlight through . It would narrow it down.

 

 

Here's the photo you requested. 1 + 8 + 8 = 17 holes, all aligned.

 

 

 

And the size of the driver.

 

 

 

Thanks for your attention.

 

post #21389 of 23373

That does not look like our normal SFI driver. Your driver is too large (50mm) and it has too many holes.

Compare to this: http://wiki.faust3d.com/wiki/index.php?title=Image:Eaglepartsbaffledriver.jpg

 

Quote:

 

Here's the photo you requested. 1 + 8 + 8 = 17 holes, all aligned.

 

 

 

And the size of the driver.

 

 

 

Thanks for your attention.

 

 

 

Edited by DefectiveAudioComponent - 4/4/13 at 12:27pm
post #21390 of 23373

Don't know if any of you were wondering, but even though the ATH-M2 is also 150 Ohms it has the "standard" 37mm, 9-hole, SFI driver and is part-swappable with the ATH-2.

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