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Audeze closed-back prototypes! Yeah, this is one of the headphones at the top of my wish list. - Page 11

post #151 of 342
10/16/12 at 8:52am
Quote:
Originally Posted by sbradley02 View Post


Thunderpants owners would beg to differ on both claims.

...They are modded T50RPs, and T50RPs stock or modded are all closed headphones; not sure why it has to be specifically Thunderpants.

 

Also these along with vintage orthos are orthos with drivers designed to cope well with closed cups and damping, while the large-diaphragm Audeze/Hifiman orthos ("planar magnetic headphones") have been designed so that they only sound optimal when there is very little obstruction at the backs of the drivers.

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post #152 of 342
10/16/12 at 9:01am

t50rp drivers are like 1/3rd the size of audeze, so it'll be interesting if they managed to negate all of that backwave that they emit.

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post #153 of 342
10/16/12 at 9:58am
Quote:
Originally Posted by jerg View Post

...They are modded T50RPs, and T50RPs stock or modded are all closed headphones; not sure why it has to be specifically Thunderpants.

 

 

 

Look at the back of the T50RP.  It is classified as a semi-open. The Thunderpants replace about a square inch of open area in the T50RP with a port approximately .125" diameter. We are looking at a factor of roughly 80:1. The difference is largely in rear damping hence my reference to Thunderpants.

 

 

 

 

Also these along with vintage orthos are orthos with drivers designed to cope well with closed cups and damping, while the large-diaphragm Audeze/Hifiman orthos ("planar magnetic headphones") have been designed so that they only sound optimal when there is very little obstruction at the backs of the drivers.

 

I don't buy it. I have been following planar technology in speakers since the original ESS Heils in the 70s, then Janszen electrostatics in the 80s, etc. It was always common practice to release both dipole and monopole versions of the same driver. The difference of course is in the damping of the back wave.

 

Seems like a lot of hand waving here about "it can't possibly work", based more on assertion than on evidence. The fact that Audeze has produced a concept piece shows that at least in theory it can work. I would further suggest that people wait to compare the closed back version if and when it is released to the open back version to make pronouncements on the product's success.

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post #154 of 342
10/16/12 at 10:01am
Quote:
Originally Posted by sbradley02 View Post

Quote:
Originally Posted by Chawanwit View Post

Hmm, isnt the planar technology works best with open back design? beside this is way to big and heavy for portable/


Thunderpants owners would beg to differ on both claims.

The T50RP isn't even a fraction as heavy as the LCD line. The LCD-2s weigh almost 1.5 pounds. If these closed beasts end up weighing more than that, you're gonna have some serious neck pain using these portably.

 

 

Quote:
Originally Posted by sbradley02 View Post

Look at the back of the T50RP.  It is classified as a semi-open. 

Actually, those vents are fake. Open up the headphones and there's solid plastic behind the vents.


Edited by takato14 - 10/16/12 at 10:02am
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post #155 of 342
10/16/12 at 10:34am
Quote:
Originally Posted by takato14 View Post

The T50RP isn't even a fraction as heavy as the LCD line. The LCD-2s weigh almost 1.5 pounds. If these closed beasts end up weighing more than that, you're gonna have some serious neck pain using these portably.

 

 

Actually, those vents are fake. Open up the headphones and there's solid plastic behind the vents.

Will be interesting to see what the final weight will be (if released). My Thunderpants weigh 18oz. My idea for modding the LCD-2 was to use a light weight aluminum closed cup. No idea what that wood cup weighs.

 

I stand corrected on the T50RP, thanks. I wonder why people refer to them as a semi-open? They must have made the same mistake I did.

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post #156 of 342
10/16/12 at 11:04am

Um, those vents aren't fake. There's a felt over them, but they still breath.

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post #157 of 342
10/16/12 at 11:27am
Quote:
Originally Posted by Armaegis View Post

Um, those vents aren't fake. There's a felt over them, but they still breath.


Thanks much! - my original statement stands then. Thunderpants are a conversion from a semi-open to a closed design.

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post #158 of 342
10/16/12 at 12:20pm
Quote:
Originally Posted by Armaegis View Post

Um, those vents aren't fake. There's a felt over them, but they still breath.

I opened them myself, there's solid plastic there.

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post #159 of 342
10/16/12 at 12:42pm

Hm. So there is solid plastic behind that piece of felt?

 

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post #160 of 342
10/16/12 at 7:00pm

I can confirm this, there's no felt on the vents in my pair, they're completely closed with solid plastic.  It's one piece too, its not a rectangle of plastic glued on, so it's not possible to remove them.  I wonder what this is all about...maybe this is why I hate them so much?  On my pair, they have the worst decay of any headphone I've ever owned, its absurdly uncontrolled and splashy, and there's a sharp peak in the upper mids...but I think that part's normal for T50 RPs.  Then again they also sound hollow, and extremely unnatural and off-kilter as far as balance goes...I'm just left wondering how much of this is attributable to my pair being sealed when others aren't, and why mine is different from the others.

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post #161 of 342
10/16/12 at 7:08pm

They were prototypes, but sounded very good. They isolated very well and while good for a closed can,

they weren't as good as either LCD-2 or LCD-3. Pricing will be interesting considering I didn't find them to be as good in bass or soundstage compared to 

the aforementioned. And of course, by release they could be vastly improved. 

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post #162 of 342
10/16/12 at 8:00pm
Quote:
Originally Posted by IzzyAxel View Post

I can confirm this, there's no felt on the vents in my pair, they're completely closed with solid plastic.  It's one piece too, its not a rectangle of plastic glued on, so it's not possible to remove them.  I wonder what this is all about...maybe this is why I hate them so much?  On my pair, they have the worst decay of any headphone I've ever owned, its absurdly uncontrolled and splashy, and there's a sharp peak in the upper mids...but I think that part's normal for T50 RPs.  Then again they also sound hollow, and extremely unnatural and off-kilter as far as balance goes...I'm just left wondering how much of this is attributable to my pair being sealed when others aren't, and why mine is different from the others.

Quote:
Originally Posted by takato14 View Post

I opened them myself, there's solid plastic there.

 

If I remember correctly, the t40rp mkII is identical in overall looks to the t50rp mkII, but is completely closed.

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post #163 of 342
10/16/12 at 8:20pm
Quote:
Originally Posted by Loevhagen View Post

Hm. So there is solid plastic behind that piece of felt?

 

 

You grabbed the picture from headfonia, but didn't link the rest of the article which explains the differences in the cups...

http://www.headfonia.com/the-fostex-orthodynamics-t50rp-and-t40rp-mk2/

The T50rp has vents. the T40rp is fully closed. 

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post #164 of 342
10/16/12 at 8:42pm

this better be bassy

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post #165 of 342
10/16/12 at 9:53pm
Quote:
Originally Posted by Cristello View Post

 

If I remember correctly, the t40rp mkII is identical in overall looks to the t50rp mkII, but is completely closed.

Nope, the box says T50RP, and it's printed on the headphone's shell too.

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Head-Fi.org › Forums › Equipment Forums › Headphones (full-size) › Audeze closed-back prototypes! Yeah, this is one of the headphones at the top of my wish list.