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Orthodynamic Roundup - Page 1476

post #22126 of 23687

well done Nick, 1 out of 6 is a HUGE success. These are very cool portables, and this little driver was one of yamahas finest..dB

post #22127 of 23687

Yup... friggin' nice Nick! Damn, you're getting me addicted to dusty orthos!

post #22128 of 23687

YHE-50A update. Somebody call the mayor.

 

Seems  I had to go back in and replace the thinner Arctic Bamboo material and replace it with the Arctic Cotton felty type material.  Was a little too warmed over, things a bit less obvious and possibly laid back/smothered I guess you could say. Bass was BIG but still loose.

At least it started correctly ( in my mind ) by checking out the lesser damping first.

 

Now it's got everything easily heard, still big bass but very easily heard details that were previously distant/lacking. Bass nicely tightened up just enough. No signs of overdamping.

Nothing piercing.

Nice Arctic Cotton traits added also=spatial aspects/depth to the sound.

 

 

* Does not contain carnival of fun times. Serving suggestion only


Edited by nick n - 10/28/13 at 7:28pm
post #22129 of 23687

"Golly gee, modding orthos sure is fun, but where oh where does one acquire the drivers to do it?"

 

:biggrin: 


Edited by takato14 - 10/28/13 at 10:03pm
post #22130 of 23687

Something I got not so long ago.  Any pointer on getting it open?  Dont like the sound much,  sounds like the PMB 100 but worst.

post #22131 of 23687

Pads are your first concern, get something with a coating back on there again since they used to have that , as close to those measurements as possible even down to the middle opening.

 

 There should be some screws if you pull the pads up a bit , maybe someone who has toyed with these in the past will see it or recall.

  You mentioned about having to use 2-3 o'clock on your source volume, these are pretty inefficient things. oops actually slightly different specs but same PMB company it has to be.

 I can say that because they look eerily similar to the drivers I have in the Dual DK 830 set here.

 Even down to the "extra" ring of holes on that driver that extend all the way out to the edges.  Same strain relief also. same clamping and same keeper plates for the magnets.

 

 These drivers were made toward the end of PMB's lineup there.

Going by the wikiphonia entry here :http://wiki.faust3d.com/wiki/index.php?title=Telefunken_TH-700

IF they ARE I can tell you for certain that they are very capable one of my favourites if cleaned up  and mounted in the cups decently,at least in the Duals which are open backed though.  One thing though i would be concerned about is the condition of the inner foam, that will have deteriorated i bet, but how much you will definitely have to open them up.

Here's hoping they aren't the same mess i encountered along with a few others in the Dual. Sticky crud in all the holes.  Be certain not to touch the foam if it has gone funny since the lightest touch may push the sticky stuff into holes..

 

Oh I see the rears of the cups seems to be an issue, a bit too much reflection and not enough venting.

 

Do you have anything like the Acoustipack 2 layer foam?

 

I will  go browse around for more info in here.

 

Searching this thread for TH700 brings up some interesting impressions need to look more but maybe the sound on yours is bad because the foam is shot?

 

At least we know its possible.

http://www.head-fi.org/t/111193/orthodynamic-roundup/13530#post_6470521


Edited by nick n - 11/1/13 at 12:00am
post #22132 of 23687

Thanks Nick.  Guess I have to talk to Don "again".:D

post #22133 of 23687

found this picture courtesy of DefectiveAudioComponent ! ( thanks )

http://www.head-fi.org/t/111193/orthodynamic-roundup/7950#post_5415272

  nice side venting around the rims.

 See also the screw post areas.

 

 

let us know ( if you want ) when you find out admping scheme. If it were me I'd put 2 layer Acousti foam on the cup rears  and a thin foam disc on top of that, space permitting without compressing that Acousti adhesive foam, then hit the driver with some type of felt, or even have the driver directly touching the Acousti foam on the back so it diffuses and damps at the same time.(?) First thought anyhow. If you hit the driver directly  you may not need to damp the vents.


Edited by nick n - 11/1/13 at 12:32am
post #22134 of 23687
Quote:
Originally Posted by Neogeo333 View Post
 

Something I got not so long ago.  Any pointer on getting it open?  Dont like the sound much,  sounds like the PMB 100 but worst.

 

PMB made quite a few different large-size drivers. How about opening it (this is very easy, the pads are usually not glued, but slide off easily), take a few photos, and share?

These drivers can sound great, the vented closed design usually is good for bass.

And you do need new pads on it to hear it, the bass now is completely cancelled out.

post #22135 of 23687

Ludoo's Megathread Search Engine page doesn't appear to be working, so I'll ask, here.

 

Last year I came across a post with a link to doctorhead.ru that described the T50RP magnetic flux. It included some colorful graphics and pictures. I searched doctorhead.ru's site and also did a Google search but no joy. I sent a query to doctorhead but no response, yet.

 

Does anyone have this link?

 

Edit: 2 hours of searching paid off.

 

Here's the Link


Edited by bluemonkeyflyer - 11/3/13 at 8:22am
post #22136 of 23687
Quote:
Originally Posted by bluemonkeyflyer View Post
 

Ludoo's Megathread Search Engine page doesn't appear to be working, so I'll ask, here.

 

Last year I came across a post with a link to doctorhead.ru that described the T50RP magnetic flux. It included some colorful graphics and pictures. I searched doctorhead.ru's site and also did a Google search but no joy. I sent a query to doctorhead but no response, yet.

 

Does anyone have this link?

 

Edit: 2 hours of searching paid off.

 

Here's the Link

I posted that info somewhere here years ago in Japanese. It was an official product development description by Fostex.

 

edit: Fostex have removed their webpage of it, but here is a webarchive of the old English version: http://web.archive.org/web/20080329124605/http://www.fostexinternational.com/docs/music_products/rp_head_pop.htm

 

Need to dig out the more complete japanese version.


Edited by Kabeer - 11/3/13 at 10:28am
post #22137 of 23687

I kept a backup of the translated original japanese page if you like: t50.zip

post #22138 of 23687

thanks leeperry.


Edited by nick n - 11/3/13 at 11:13am
post #22139 of 23687
Quote:
Originally Posted by Kabeer View Post
 

I posted that info somewhere here years ago in Japanese. It was an official product development description by Fostex.

 

edit: Fostex have removed their webpage of it, but here is a webarchive of the old English version: http://web.archive.org/web/20080329124605/http://www.fostexinternational.com/docs/music_products/rp_head_pop.htm

 

Need to dig out the more complete japanese version.

Thank you, Kabeer.

 

Quote:
Originally Posted by leeperry View Post
 

I kept a backup of the translated original japanese page if you like: t50.zip

Thank you, M...perfect! Downloaded, unzipped, and ripped.

post #22140 of 23687

Hello. I was recently given a pair of Yamaha YH-1 headphones. They sound pretty good as they are, but are a bit lacking. I found this wonderful thread full of knowledge about modifying these phones by adding damping into the enclosures. However, the thread is so extensive that I am not able to find any specific YH-1 mods discussed and explained in detail. Is there a "How To" for this? I tried searching and came up with nothing as far as useful directions. I am sure in more than 22,000 posts there is some specific advice on how to mod the YH-1 set. If anyone can point me to that or just give me a suggestion on how to better search this thread, I would be very grateful.

 

Fascinating reading so far, but I just do not have the time or patience to read through 22,000 posts to find what I am looking for. I have learned a lot by reading a few pages of this thread and given no other responsibilities in life would read through the rest of it.

 

Thanks in advance and keep up the excellent work!

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