CHANGSTAR: Audiophile Headphone Reviews and Early 90s Style BBS
Lobby => Headphone Measurements => Topic started by: Marvey on December 01, 2011, 12:56:39 AM
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Joe Grado HP1000 Frequency Response (Anax's pair). Still a reference for neutrality, even today.
(http://www.changstar.com/index.php?action=dlattach;topic=24.0;attach=22;image)
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Joe Grado HP1000 CSD Waterfall Plots. Very clean, even by today's standards.
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Beautiful...
this must be the sexiest graph on a grado yet!!
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Wow... I'm still puzzled why they replaced this headphone.
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I still listen to them on a regular basis. Just did the other day from the MJ.
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While they're nice sounding headphones (although I've only heard them in meet conditions), the ergonomics are still just as bad as John Grados, which is to say awful in my opinion.
I can't get past the comfort issue on them.
That said, great set of graphs up there - no idea why the newer phones threw out all the engineering that went into these.
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Joe Grado HP1000 Frequency Response (Anax's pair). Still a reference for neutrality, even today.
(http://www.changstar.com/index.php?action=dlattach;topic=24.0;attach=22;image)
Just dug these ancients out after ages in storage. The stock pads have -- as typical for Grado, beyer, Senn, etc -- disintegrated (= crumbled &/or gummed up).
Haven't been thru all the HP-x mods posts yet. So ...
+++ What's the best pad option for the HP-1 ... e.g., newer Grado stock, 3rd-party (after-mkt), DIY, etc.?
+++ The MEASURED curve -- ala IEC dummy head and whatever electronics, xducers and software -- MAY be v. smooth, but who knows whether most HUMAN ear-brain systems function optimally THAT way?? ... if ear-brain could speak its mind (LOL), might it shout, "diffuse-field-eq me!"?
+++ On SQ, notice that dynamics such as snare drum are snappy quick (typical Grado) but slightly compressed (not as impactful) ... even with good amping. Not sure there is a tweak for this.
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Using anything but TTVJ flat pads on a joe grado is a sin.
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Never heard a pair, but indeed this looks nothing like the SR / RS and recent PS series, I like it!
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love the wide, lowmid hump centered at 300hz. Flat line eq's have not sounded right to my ears for whatever reason. But neither do phones with the hump in the wrong place. The ps500's are a dissapointment partly because that hump is too low (100hz) and too severe. This graph is pretty much what i've been trying to get magnums to approach.
I wonder what these phone's graph would look like using tyll's comensation curves. I'd guess the hump would look similar, but the graphs on this site are guite different in the high end appearance so it's hard to imagine........
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I also have 325i and SR-80. Not a "Gradolover" by any means. Rather, they are a TYPE of useful transducer that fills the gap others IME** can't quite nail ... e.g., the highly accurate and detailed midrange, that pace n' rhythm/dynamics/acceleration/snappiness thang, etc. (tho' not much).
** Haven't tried the V-Moda's. But I have a feeling they will out-do the Grados WRT speed and snap.
On pads ...the TTVJ flats reminds me of that mostly-useless Starving-Student socks mod that some-effin'-how got hyped on Head-effin'-Fi and Inner-effin'-Fidelity (free + gossip-driven + unexamined + non-fact-checked content seems to get priority on the Net! Anything that AdSense and PPC ads can use is fair play ... luv that easy $$$. eff the scientific method!! eff U!!!!) ...same philosophy WRT decreasing the ear-transducer distance.
Tylll/IF noted the taped L-cushions being subjectively best, at least for the 225's:
http://www.innerfidelity.com/content/evaluation-grado-stock-and-modified-ear-pads-page-3
My HP-1 and SR-80 were orig purch'd in 1993. Dunno if current Grado L-cushions have the same dimensions and material composition as origs. Methinks that waveguide has become a bit more conic for the latest batch???
I don't think there is such a thing as NOS pads ... even if NEVER used, THAT TYPE of foam has a certain "half-life". What I can't figure out is what exactly causes this TYPE of FOAM to rot (have experienced same thing with other manuf's cans as well as Sonex sound panels). I live in an environ. unpolluted & dry -- a region of the U.S. SW. And this rot occurs at about the same pace as when I lived in the US MidWest.
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I use TTVJ flat pads with 3M Scotch ("Crystal Clear") Tape (and NOT electrical tape) around it. I prefer them by a wide margin to the bowls taped the same way. For me they are clearly the best Grado pads bar none.
Also it appears that they have changed foam recipe or manufacturer for their pads (example is for their L-cushion/bowl: ) http://www.head-fi.org/t/637314/grado-sr325i-ear-pad-cushion-variations#post_8886028
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If those were in fact both new pads, and not just old/worn pads compared to new, then the ones on the "newer version" on the right is going to be warmer/bassier and more like flat pads. Assuming no foam changes...
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Those are different. The one on the left has an extra bevel so it's not just wear.
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Those are different. The one on the left has an extra bevel so it's not just wear.
Jesus Henry Christ ... it's THE Anax!!! ... thought you were in Banville, bubs? AGAIN!! poo **
Changin' the effin' shape of the STOCK pad (in that H-F thread) may signif. change its FR/CSD -- e.g., the conic section/waveguide thang, changes its dispersion.
As far as my HP-1. I don't have the TTVJ's yet (tho' those are on my grocery list); I'm using a modded version of the L's with clear tape...and some socks and some of Rhythm's dirty drawz.
Toodles,
-S
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** Dude, WTF happened over there? Did you forget the kneepads for your visit to Currawong + Mansilla's or what? Seriously, dude, you like totally, effin', raked up the most posts ever (= IP content, tho' dunno know how "I" ... LOL). And then they sh*t can you! Efff! What do you think ... Aurora ... Columbine ... Oslo/Utoya ...at the next meet-n-greet ... or a Jigsaw stylistic :)p13
[P.S. That's why I never go to those Ice Cream n' Beer Socials .... to many PO'd Banvillites around ]
http://www.youtube.com/watch?v=R6MlHxAzLXA
http://www.youtube.com/watch?v=WaIJKM0sjdo
And the most maniacal:
http://www.youtube.com/watch?v=tXpGzgHqswk
LOL!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Next time you get the stick ... tell em' to ... Unbox You )(