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Headphone CSD waterfall plots - Page 26

post #376 of 937
Thread Starter 

Magnum 2.5 (partial cup treatment) CSD Waterfall Plots

(and RS1 for comparison)

 

Magnum 2.5 L.txt.jpg Magnum 2.5 R.txt.jpg

RS1 L flatpads.txt.jpg RS1 R flatpads.txt.jpg

 

The Magnums definitely have some major improvements over RS1 driver:

 

  1. Shorter and consistent duration of ringing at 2kHz and 5kHz. Broader ringing at 5kHz.
  2. Amazingly excellent driver matching. This can't be an easy thing.
  3. No ringing at 9kHz (this is one of those things that contributes to making RS1 difficult for me)
  4. Overall faster in the critical 5-10kHz harmonic region.

 

Hey! I'm still wearing them... Grados don't usually last this long.


Edited by purrin - 10/12/11 at 9:20pm
post #377 of 937

That driver matching is impressive as are the plots!

post #378 of 937
Thread Starter 

 

Quote:
Originally Posted by LFF View Post

That driver matching is impressive as are the plots!


Yup, it's comforting to know that there are people out there that still give a rat's ass about the little things like this. This puts the Symphones Magnums in the same category as the STAX SR009 and Sennheiser HD800 in terms of driver matching.

post #379 of 937
Quote:
Originally Posted by purrin View Post

 

Yup, it's comforting to know that there are people out there that still give a rat's ass about the little things like this. This puts the Symphones Magnums in the same category as the STAX SR009 and Sennheiser HD800 in terms of driver matching.


Indeed. I remember those HD800's were impressive for that as well.

 

 

 

post #380 of 937

How well matched are standard Grado? I remember their website advertising at worst plus/minus 0.05 dB for any headphones of the RS/GS/PS lines.

I'm skeptical about that claim.

post #381 of 937

Were both the inner and outer cups metal? If the innner cups are metal, are they metal like the 325is/MS2i cups or are they different? Rhydon changed the metal for V3 cups, for reasons I forget (and I can't find the email where he explained it) but possibly to deal with the ringing.

post #382 of 937

If you find it let us know.  I'm curious about the material change and what he decided to go with.

post #383 of 937

I suspect some composite alloy containing witches teeth and unicorn tears, bound within cold iron.

post #384 of 937
Quote:
Originally Posted by Armaegis View Post

I suspect some composite alloy containing witches teeth and unicorn tears, bound within cold iron.


I do get the joke but material science is a real science lol.  There is a world beyond steel and recycled beer cans.  wink_face.gif  

post #385 of 937

Oh I know. I am a metallurgist after all...

post #386 of 937
Quote:
Originally Posted by Armaegis View Post

Oh I know. I am a metallurgist after all...


That's good to know actually.  Mental note taken.  So witches teeth and unicorn tears do work!

 

post #387 of 937
Quote:
Originally Posted by Anaxilus View Post

That's good to know actually.  Mental note taken.  So witches teeth and unicorn tears do work!

 



You should try orphan tears and hens teeth along with a pinch of fairy dust.

post #388 of 937

Well if we start with some powdered metal/alloys and assume the witches teeth are a ceramic compound and the unicorn tears as some sort of binder/flux, form it all together via sintering... actually that could work quite well.

 

 

Quote:
Originally Posted by LFF View Post

You should try orphan tears and hens teeth along with a pinch of fairy dust.


 

Oh goodness no, orphan tears contain far too much salt and would encourge corrosion in the metal.


Edited by Armaegis - 10/13/11 at 12:18am
post #389 of 937

Ah, powdered metal.  Reminds me of when GM started casting engine blocks using the stuff for Saturn.  I think connecting rods were first done universally though in auto.  Saturn probably went under when we ran out of Unicorns.  If someone can send purrin a witch we'll pull her teeth and measure her lamentations.

post #390 of 937
Quote:
Originally Posted by Currawong View Post

Were both the inner and outer cups metal? If the innner cups are metal, are they metal like the 325is/MS2i cups or are they different? Rhydon changed the metal for V3 cups, for reasons I forget (and I can't find the email where he explained it) but possibly to deal with the ringing.


These are the 325i cups and rather also my Magnums. I was actually unaware Anaxilus was going to give them to purrin to get measurements done when I sent them to Tyll but oh well..there are two sets of data for this particular headphone now :P I would be interested in the reasoning for the changing of the metal for v3 cups if you can find it.

 

purrin, I take it you like these headphones which is good. I really like mine (well kinda have to like them to spend money on modding them) so glad you like them although Tyll wasn't the biggest fan of them :p

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