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Orthodynamic Roundup - Page 1491

post #22351 of 23549
Quote:
Originally Posted by bluemonkeyflyer View Post
 

So, If anyone has any suggestions for a drop-in replacement for YH-1000, I'm all ears.  The outside diameter is 74mm and the inside opening over the driver is 44mm.

What kind of thickness does it seem to have?

post #22352 of 23549
^ hard to say. They appear to be angled. I don't know if they have been compressed.

The OD is 72 mm. The inside diameter is 34 mm, not 44 mm. The thin side thickness is about 5 mm and the rear thick side about 10 mm.

No reply from Wang but he has some 72 x 36 mm that may work.
post #22353 of 23549
Quote:
Originally Posted by bluemonkeyflyer View Post

^ hard to say. They appear to be angled. I don't know if they have been compressed.

The OD is 72 mm. The inside diameter is 34 mm, not 44 mm. The thin side thickness is about 5 mm and the rear thick side about 10 mm.

No reply from Wang but he has some 72 x 36 mm that may work.


No wonder i was having troubles there. 34 mm ok. I thought it was some strange thin pad like the YHE series.  34mm is much easier. I hope


Edited by nick n - 1/20/14 at 10:40pm
post #22354 of 23549

Huh... that sounds about like the diameters for the HP/YH-100 as well. Can anyone confirm? If yes, the thickness is about 10mm.

 

Not sure if this picture (from Wikiphonia) is a stock pad but if it is, it doesn't seem angled! at least it gets that possibility out (doesn't mean you can't try angled pads)

post #22355 of 23549

BMF: You could get a pad that has an ID larger than 34mm and use a bass lens? And I agree, pads are ginormously important to the sound, down to the density of the foam you use, ime. It will be next to impossible to find replacement pads, imo, short of locating a pair of NOS HP/YH1000 pads (uhhh, yeah, ok) or, if you can sew, maybe tearing the stock pads apart and replacing just the material in question (which still won't be perfect). GL on the restoration.

 

Aaaand, "Why is khb here?" you might be asking. Building a couple frankenphones and thought if anyone finds this interesting it'd be you guys. What we've got here is a throwback to my first ever built DIY ortho-phone which was a Sony MDR-CD380 with Audio Technica ATH-2 drivers. This is a Sony MDR-CD280 acquired for pennies off eBay. Extremely similar construction to the 380. Stock pads are "trash," they don't seal with your face, yet, oddly enough, I originally turned the pads inside-out and said the sound improved dramatically. Upon further inspection these pads were vacuum formed using some kind of liquid rubber that I'm guessing the fabric was impregnated with so when it cured it would retain an unnatural, asymmetrical curvature (kind of like us painting the insides of our pads with Plasti-Dip). This also keeps sound from leaking into the pad volume so the only place for bass to "leak out" would be in between the pad and baffle which I originally alleviated by sealing the pads to the baffles with *drum roll* PlastiDip. But I didn't know any of this until I ripped the pads apart, so (in theme of what I suggested BMF do with his YH1000 pads) if you've ever found yourself wondering if you were ever going to see lambskin CD280 ear pads in your lifetime you can now die peacefully:

 

ATH-2 drivers have since been installed. Needs some re-damping, somehow I actually managed to find a felt combination that completely sucked all upper midrange out of this notoriously shouty driver, I actually have to EQ the stuff back in, along with a little treble. Kind of makes me want to rip all the felt off and start fresh, and also makes me wonder how this felt combination sounded good in the drivers' last enclosure, but that was a pair of canalphones (yes, ATH-2 canalphones), so go figure.

Anyway, hope you guys liked what you saw and read. There may be a post of mine in here concerning a U70 driver transplant sooon..

post #22356 of 23549
Quote:
Originally Posted by khbaur330162 View Post
 

 

Nice work - maybe you'd like to post this too in the ear-pads thread?

http://www.head-fi.org/t/639510/the-ear-pads-thread/120#post_10139470

post #22357 of 23549
Quote:
Originally Posted by kalbee View Post
 

Huh... that sounds about like the diameters for the HP/YH-100 as well. Can anyone confirm? If yes, the thickness is about 10mm.

 

Not sure if this picture (from Wikiphonia) is a stock pad but if it is, it doesn't seem angled! at least it gets that possibility out (doesn't mean you can't try angled pads)

http://wiki.faust3d.com/wiki/images/7/74/YH-1000_service_manual_P1.jpg

The pads are angled. But yah i doubt it makes a huge difference to be angled or not, because they get compressed so much anyway.

post #22358 of 23549

Got something headed to me, maybe not orthodynamic but a planar transducer nonetheless...

 

 

 

 

The lowest end of Pioneers piezoelectric line and by far the rarest of them all, the SE-300. There are only about 3 pairs of these confirmed to exist.

 

They have the thickest diaphragm of any piezo, measuring at a whopping 9 microns. Comparatively, the SE-500's diaphragm is 5 microns thick, and the SE-700's is 7 microns. Judging by the differences between the 500 and 700, it should also mean that they are both the bassiest and the hardest to drive of all three. More on them once they arrive.

post #22359 of 23549
Quote:
Originally Posted by Kabeer View Post
 

http://wiki.faust3d.com/wiki/images/7/74/YH-1000_service_manual_P1.jpg

The pads are angled. But yah i doubt it makes a huge difference to be angled or not, because they get compressed so much anyway.


Good call!

I suppose they aren't fully circumaural considering the earpad opening size... so might not help too much. But good to put into consideration nonetheless. Kudos!

post #22360 of 23549

Someone already tried to install a Beyer 770 PRO drive in a Yamaha HP-series?

In the site they say th drive is 45 mm diameter and I measured my HP-3 drive location and it's around 45~46.

post #22361 of 23549
Quote:
Originally Posted by YuriMetal View Post
 

Someone already tried to install a Beyer 770 PRO drive in a Yamaha HP-series?

In the site they say th drive is 45 mm diameter and I measured my HP-3 drive location and it's around 45~46.


There shouldn't be any problem as far as diameter goes; the Yamaha drivers were mostly 45mm or larger AFAIK, in the HP/YH-1000/100/1/2/3 series. Plus the connector tabs protrude outwards in most cases.

You may or may not run into depth problems. Depends on the dynamic driver's capsule. Some AKGs for example are really thick.

post #22362 of 23549
Quote:

Originally Posted by khbaur330162 View Post

 

lambskin CD280 ear pads

 

BTW, genuine leather is very comfy and doesn't flake but most if is contaminated with chromium: http://www.vegetable-tanned-leather.com/chrome-in-leather

 

http://www.peta.org/issues/animals-used-for-clothing/leather-industry/leather-environmental-hazards/

 

"Most leather produced in the U.S. is chrome-tanned"

 

It's already becoming a worldwide problem with cheap shoes but I guess things would get a lot worse with ear pads.

post #22363 of 23549

I always liked anything with chrome on it. I must have picked up on it subconsciously :)

 

thanks for that info.

post #22364 of 23549

 

It's been quite so I just leave this here.   Anybody know the difference between the 40 and the 50?  I think I got a weird one here.  More pics after work.

post #22365 of 23549
Quote:
Originally Posted by Neogeo333 View Post
 

 

It's been quite so I just leave this here.   Anybody know the difference between the 40 and the 50?  I think I got a weird one here.  More pics after work.

Not completely sure, but from what I've found Akai uses Fostex-made drivers, so it might be a T30 driver versus a T50 driver, or something to that effect. Why not open it up and take a look?

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