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Bloody Hell -- Raal ribbon headphones


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#21 Smeggy

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Posted 16 January 2009 - 01:55 PM

looks v.interesting, remember seeing this a long while back. What is the issue that it cant get past the alpha stage?


They want to keep focused on their speakers and not get sidetracked with a headphone they're not sure would even sell. So no clue on timeline or potential price.. if they ever do go into any kind of production.

That's why we'd be happy to take over the testing stages for them ;)

#22 luvdunhill

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Posted 16 January 2009 - 01:56 PM

They'd need to be pretty small and light. I looked into the availability of buying Raal ribbons but it seems they're not sold separately. I'd love to get my sticky mitts on a pair of them.


you can definitely order them separately. Here's one link:

RAAL 140-15D Ribbon Tweeter (with optional Amorphous Core) from Madisound

and

http://www.madisound...roducts_id=8323

#23 luvdunhill

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Posted 16 January 2009 - 02:01 PM

They look to me like the standard RAAL ribbon offerings, so yes they're available... I could be wrong though ...


very good question :) I'd be worried about the bass response.

Also, I researched these RAAL ribbons quite a bit, and heard a couple projects with them. They are very nice sounding, but personally I preferred the Raidho units. I think the RAAL ribbons are really meant to be driven by tube gear (see their marketing stuff, they were almost designed this way) and that wasn't a limitation I was willing to accept at this price range...

Edited by luvdunhill, 16 January 2009 - 02:04 PM.

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#24 Hopstretch

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Posted 16 January 2009 - 02:02 PM

you can definitely order them separately. Here's one link:

RAAL 140-15D Ribbon Tweeter (with optional Amorphous Core) from Madisound

and

RAAL 70-10D RAAL Ribbon Tweeter (with optional Amorphous Core) from Madisound

From the specs, it looks like they might be a touch -- how you say -- bass light?

EDIT: Too slow.

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#25 luvdunhill

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Posted 16 January 2009 - 02:03 PM

From the specs, it looks like they might be a touch -- how you say -- bass light?

EDIT: Too slow.


well, remember those measurements are on an open baffle..

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#26 spritzer

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Posted 16 January 2009 - 02:30 PM

Yup, things will change dramatically once you move over to the closed baffle of planar headphones.

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#27 Smeggy

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Posted 16 January 2009 - 02:31 PM

Hmm, those are definitely not the type they made for their headphones. Those things look the size of housebricks.

I just looked at the dimensions, 8x3x4" and over 6Ib each :eek:

#28 Hopstretch

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Posted 16 January 2009 - 02:34 PM

Hmm, those are definitely not the type they made for their headphones. Those things look the size of housebricks.

I just looked at the dimensions, 8x3x4" and over 6Ib each :eek:

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#29 mypasswordis

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Posted 16 January 2009 - 02:34 PM

Probably because the box houses the transformers. For headphone use, you'd have to relocate the transformers into a separate box... and they're ridiculously expensive.

The magnets are pretty heavy as well. Can't move those, though.

#30 Smeggy

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Posted 16 January 2009 - 02:48 PM

Pfft. Are you a modder or a mouse?


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#31 Kabeer

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Posted 16 January 2009 - 02:55 PM

That's why we'd be happy to take over the testing stages for them ;)

Oh yes, we should take the load off his back :D.
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#32 Dusty Chalk

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Posted 16 January 2009 - 02:59 PM

They want to keep focused on their speakers and not get sidetracked with a headphone they're not sure would even sell. So no clue on timeline or potential price.. if they ever do go into any kind of production.

That's why we'd be happy to take over the testing stages for them ;)

I didn't get the impression from the article that "being sidetracked" had anything to do with it -- it sounds like he constantly has multiple projects going on.

The issues were twofold -- he had heard that same study about magnets close to the head issue, and is looking into it (also shielding, and then the weight problem); and amplification (ribbons, of course, require special amplification) -- I'm assuming it's the same issue as with ribbon speakers -- I.E. the low impedance presented across the frequency spectrum, but have not received confirmation.
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#33 luvdunhill

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Posted 16 January 2009 - 03:03 PM

here's the final impedance of the 2-way I'm using the Raidho unit in

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#34 Dusty Chalk

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Posted 16 January 2009 - 03:17 PM

Well then, maybe he's just being persnickity, I don't know.

EDIT: Or is that before the transformers? Do Raidho's even have transformers?

Edited by Dusty Chalk, 16 January 2009 - 03:19 PM.

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#35 luvdunhill

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Posted 16 January 2009 - 03:25 PM

Well then, maybe he's just being persnickity, I don't know.

EDIT: Or is that before the transformers? Do Raidho's even have transformers?


yup, RAAL units are very close:

RAAL 140-15D

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#36 Dash

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Posted 23 January 2009 - 10:12 AM

Based on my experience with my Maggies, wouldn't ribbon headphones be really bass deficient? The bass response of my Maggies is completely dependent on wall proximity. They need the wall to simulate the "box" perse, at least thats my understanding.

#37 manaox2

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Posted 23 January 2009 - 11:43 AM

From the specs, it looks like they might be a touch -- how you say -- bass light?

EDIT: Too slow.


well, remember those measurements are on an open baffle..


Based on my experience with my Maggies, wouldn't ribbon headphones be really bass deficient? The bass response of my Maggies is completely dependent on wall proximity. They need the wall to simulate the "box" perse, at least thats my understanding.


After reading the quoted passages, I inferred that the headphone housing (sort of like a "box") would determine the bass. Spend more time reading, I wouldn't want you to wear out a recently dusted asshat.

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#38 aerius

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Posted 23 January 2009 - 02:49 PM

Based on my experience with my Maggies, wouldn't ribbon headphones be really bass deficient? The bass response of my Maggies is completely dependent on wall proximity. They need the wall to simulate the "box" perse, at least thats my understanding.


Listen to a set of Apogee Scintillas or Divas sometime, not all ribbons are bass deficient, in fact the Apogees mentioned above often have too much bass.
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#39 Smeggy

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Posted 23 January 2009 - 03:08 PM

The Scintillas and Divas are fucking sweet. I fell in love the first five minutes I heard them. Oh, and awesome slammin' bass.

#40 Dusty Chalk

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Posted 23 January 2009 - 03:14 PM

$90 each is a bit steep, not knowing if they'd even be any good as headphones. Raal already has a proto that works so we want it :D

He wrote back confirming that he won't be selling the headphone drivers separately. He also explained that I was right, he needs a proprietary amp because it basically needs to be able to drive a short circuit.
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