ChrisCoaster wrote:
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That curve you re-plotted is for the ATH-M50 RIGHT BELOW IT! See
top post, 2nd graph down he
http://www.head-fi.org/t/533917/rola...sed-headphones
And by itself if you prefer: http://cdn.head-fi.org/3/3c/3c969bd4_img024.gif
As I'm sure you would in a sound rig, please "check your sources"!
The source, Mr. Coaster, was the google images reference you
provided. If you provided ambiguous or conflicting sources,
that's your fault.
Again, here is the ATH-300 by itself:
http://cdn.head-fi.org/a/a8/a8dd81ad_rh-300_f.gif
Even when I exaggerated the y axis on this it was still flatter than
what you pdf'd.
Well, here's the graph you pointed me to in comparison
to the one I originally did.
http://cartchunk.org/audiotopics/RH-300-1+2_nfr.pdf
Frankly, calling either of these "flat" is a triffle
absurd. The difference in the low frequency could easily
be a difference in how well the phones are sealed against
the head: I've often seen larger differences than this
with the same headphone but positioned slightly differently.
Above 1 kHz, the response of both is pretty abysmal.
(note both graphs are normalized at 1 kHz for ease in
comparison.)
And suggesting that EITHER of them is dramatically better
than other headphones would suggest a lack of knowledge
of headphone measurements.
BTW nice work on PDFing the graph, just the wrong
headphone. 
Actually I didn't PDF anything. I have written a utility
which, in fact, converts a wide variety of images of graphs
back to tabular data. Then a second utility plots the resulting
tabular data on a graph conforming to IEC263 requirements.
The output of that goes through a standard ghostscript pdf
printer.
BTW, IEC 263 states, among other things, what the ratio
of horizontal to vertical scale should be. You will note,
for example, that in the graphs I presented, 20 dB dB of
vertical scale, corresponding to a factor of 10 in
voltage, corresponds to a decade of frequency also a factor
of 10, on the horizontal scale. This is to prevent the
deceptive, misleading and essentially useless frequency
response graph display such as exactly the ones you
reference.
Beyond that, I would rate either of these headphones as "eh".
--
+--------------------------------+
+ Dick Pierce |
+ Professional Audio Development |
+--------------------------------+