Oratory has recently remeasured a load of headphones, (I think using a new firmware), and it's changed some of the frequency responses. Here is his post listing his update (incl a few new headphones he's measured too):
https://www.reddit.com/r/oratory1990/comments/jtf6la
Here's the Sennheisser HD600 that I have showing his old measurement vs his new measurement (green line) which I imported both into REW so you can see the difference of the new firmware/setup:
I also checked for differences in another headphone I have NAD HP50, and there weren't any significant differences, virtually identical.....so this new firmware (or whatever the difference is, I'm a bit sketchy on the specific difference)....so this new firmware is changing the measurements of some headphones but not of others.
I did an EQ using the new measurement of the HD600, here it is:
And here's my old EQ I did using his old (original) measurement:
(EDIT: these are all EQ's done to the 2018 Harman Curve, which is the same target curve used by Oratory....just these EQ's are created by my own fair hand manually)
Feel free to try these out on your Sennheiser HD600, I think I prefer the EQ based on the new measurement...it's late in the day here though now & I've only done limited testing between the two....the EQ based on the new measurement I think I find wider & more open and I like the bass better, but these are only quick tests of mine when I'm tired.
Let me know what you think, and what you know about these new changes in Oratory's gear & measurements? And also perhaps if you prefer EQ's from his new measurements or his old measurements?
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EDIT 7th Dec: I contacted Oratory1990 & received a response from him. The remeasurements he did are based on testing some more units of the various headphones he's previously tested. There has been no "firmware change" to his measurement gear that I was talking about. The different equipment reference numbers at the bottom of his pdf's for his measurements & EQ's, he explained this so I'll copy & paste his reply: "I use a Gras 43AC for in-ear headphones and a 43AG or 45BC (mostly the latter) for everything else. Aside from sealing which is easier on the 43AG, those will deliver identical results and the setup hasn't change in some time."
Cool, the mysteries have been answered!
Here's the Sennheisser HD600 that I have showing his old measurement vs his new measurement (green line) which I imported both into REW so you can see the difference of the new firmware/setup:
I also checked for differences in another headphone I have NAD HP50, and there weren't any significant differences, virtually identical.....so this new firmware (or whatever the difference is, I'm a bit sketchy on the specific difference)....so this new firmware is changing the measurements of some headphones but not of others.
I did an EQ using the new measurement of the HD600, here it is:
And here's my old EQ I did using his old (original) measurement:
(EDIT: these are all EQ's done to the 2018 Harman Curve, which is the same target curve used by Oratory....just these EQ's are created by my own fair hand manually)
Feel free to try these out on your Sennheiser HD600, I think I prefer the EQ based on the new measurement...it's late in the day here though now & I've only done limited testing between the two....the EQ based on the new measurement I think I find wider & more open and I like the bass better, but these are only quick tests of mine when I'm tired.
Let me know what you think, and what you know about these new changes in Oratory's gear & measurements? And also perhaps if you prefer EQ's from his new measurements or his old measurements?
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
EDIT 7th Dec: I contacted Oratory1990 & received a response from him. The remeasurements he did are based on testing some more units of the various headphones he's previously tested. There has been no "firmware change" to his measurement gear that I was talking about. The different equipment reference numbers at the bottom of his pdf's for his measurements & EQ's, he explained this so I'll copy & paste his reply: "I use a Gras 43AC for in-ear headphones and a 43AG or 45BC (mostly the latter) for everything else. Aside from sealing which is easier on the 43AG, those will deliver identical results and the setup hasn't change in some time."
Cool, the mysteries have been answered!
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