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Orthodynamic Roundup - Page 1382

post #20716 of 23454

C'mon Nick, you know you wanna.

 

/peer pressure

 

cool.gif

post #20717 of 23454

Plastic from a roasting bag (packaging has the PET symbol on it, that's all I know) seems to work as a substitute of sorts for the moisture guard on the Unipolar. I tried wrinkling up the film before attaching it (like some pros seem to do it), but that didn't come out so hot even though I tried three different versions. In the end, I put on a smooth film of it. Although when I say smooth, I mean not really smooth - it has a few folds in it that were there to begin with. And I attached it with duct tape, since I've no proper glue. No pictures; later.

 

Colorful graph (raw data). Spikes in the lower mids and below are interference. The cover was applied only to the front of the driver.

400

 

The graph shows a bass hump in all measurements, but they were measured with no baffle, i.e. the driver was loosely in the cup and the mic setup was pressed against it. Doesn't give the most accurate response graphs, but does show the relative differences; so I'm not sure whether they actually have a hump or not at this point.

 

Also, the Unipolar aren't exactly orthos I know, but I don't want to advertise them so much as to create a proper thread for their modding, and since wualta was asking for info on them, into the ortho thread it goes. And in any case they're planar headphones, can't argue with that.


Edited by vid - 11/4/12 at 10:50am
post #20718 of 23454

Nick. It does have adjustable venting. 

post #20719 of 23454

yes I certainly don't mind seeing electret/planar type stuff like the Unipolars in here. Keeps it interesting

post #20720 of 23454
Thread Starter 
Quote:
Originally Posted by JadeEast View Post

Nick. It does have adjustable venting. 

When a modern headphone has adjustable venting, how is that implemented? The only headphone I've ever owned with that feature was the rare Sennheiser HD-44, and the adjustment was primitive at best.

 

 

Quote:
Originally Posted by nick n View Post

yes I certainly don't mind seeing electret/planar type stuff like the Unipolars in here. Keeps it interesting

Exactly, and more. It may seem off-topic, but I can't help but think we can learn things by looking around at similar, analogous contraptions. As long as we know what the differences are and how they affect the sound. After all, approaching the mass of an electret/electrostat membrane is one of the expressed goals of the design team at JPS Labs. What happens when you get there? Electret 'phones can give us a preview.


Edited by wualta - 11/4/12 at 5:06pm
post #20721 of 23454
post #20722 of 23454

oh the torture, guess I will go read that Beyer -fidelity article again.

Wualta if you are at all curious as you seem to be, hit up the Amazon page for them some good shots. And headfonia. Apparently these are the definition of cool. no kiddin'. Theres even a hipster modelling them and having to hold onto them in a dynamic manner, a manner that's so hipster and obscure we have probably never heard of it.tongue_smile.gif

Q: how many hipsters does it take to screw in a lightbulb?

A: I dunno it's a pretty obscure number you have probably never heard of it

 

At least let me pretend i don't want to hit the mouse button and have something magically show up at my post office.

 

One planer old idear I have been toying with is damping the Stax SR-5 to see what comes of it, if I can grab a tidbit of bassery without affecting the open sound too much I won't need to blow $ on the SR-5 Golds later on. PWB managed it I should revisit them and see.


Edited by nick n - 11/4/12 at 6:02pm
post #20723 of 23454
Thread Starter 
Quote:
Originally Posted by JadeEast View Post

There's a little bit on inner fidelity.

Ah, thanks. Yep, it's exactly the same as on the old Sennheisers! I'll put up a closeup photo of the HD 44.

 

Quote:
Originally Posted by nick n View Post

oh the torture... Apparently these are the definition of cool

Q: how many hipsters does it take to screw in a lightbulb?

A: I dunno it's a pretty obscure number you have probably never heard of it

"Q: I have heard of it.

 A: Oh, then it's different now."

post #20724 of 23454
Thread Starter 

700

SENNHEISER HD 44 DRIVER MODULE CLOSEUP

post #20725 of 23454
Media headphones (those cheap ones used for home theater systems) have been using variable bass ports for a while. Though many of them would gain openings on the baffle for more inside-cup-to-between-pads-and-ears air/wave flow.
My cheap MDR-XD200's did that, hence having a Music<-->Movie switch. It just raises a trap door kind of thing.
Though Sony is into these kind of weird ideas so it isn't entirely surprising to see their older stuff come with all sorts of fun gimmicks.

I think the new Tiesto-AKG stuff also have variable bass ports?
Edited by kalbee - 11/4/12 at 6:57pm
post #20726 of 23454

Wualta are those common? Guessing not. I will keep my eyes posted see if one rears it's tiny(?) large(?)  orange ( edible?) face

post #20727 of 23454
Thread Starter 

Common? no. When I first mentioned them in a 2005 post, I couldn't find a single image online. Things are a little better now. Here's an overall view.

 

 

700

 

 

The little driver modules pop off, just like the HD 414. As I recall, it wasn't expensive either-- must have got it around 1976. I got it to see what it could do for binaural playback. The lack of bass ruled that out, but they became very useful as a kind of "distortion sniffer", sort of a poor-man's SR-X, something to hunt for tape saturation, bad splices, vinyl grunge, clipping and buzz. Oh analog, why did we ever abandon you?

post #20728 of 23454

Fro your pleasure, dear fellows : 

 

1000

 

1000

 

1000

 

1000

 

1000

 

1000

 

1000

post #20729 of 23454
Quote:
Originally Posted by wualta View Post

Sennheiser HD-44

 

Any pair of headphones that comes with a bottle of lube is... creepy.

post #20730 of 23454

Unipolar 2000 baffle without the acoustic filters.

 

700

700

 

The filter material.

400 400

 

The baffle filter as a whole seems quite an intricate system, but I'm not sure that I see a large difference in measurements between having the filters and not having them.

 

Also, and I'm sure MDR30 has noticed this as well, the way you need to bend the cable under the baffle is absolutely moronic. I can never get the bottom bit of the baffle to attach properly to the cup.


Edited by vid - 11/5/12 at 5:28pm
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