[jude]

I posted my subjective impressions of the Neumann NDH20 in the previous post. Following are our measurements of it:

Fig.1 Neumann NDH20 frequency response

Fig.2 Neumann NDH20 frequency response, compared to the Harman AE/OE Target

In Fig.2 above, you can see the Neumann NDH20's frequency response compared to the Harman AE/OE Target* (to read the linked paper in full requires its purchase or AES membership).

Fig.3 Neumann NDH20 total harmonic distortion (THD)

The Neumann NDH 20's THD is very impressive -- very low (Fig.3 above).

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* S. Olive, T. Welti, and O. Khonsaripour, “A Statistical Model that Predicts Listeners' Preference Ratings of Around-Ear and On-Ear Headphones,” presented at the 144th Audio Eng. Convention, Milan, Italy (May 2018).

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The measurements included in this post were made using:

• GRAS 45CA Headphone Test Fixture with:
  • GRAS RA0401 High Resolution Ear Simulators
  • GRAS KB5010/KB5011 Anthropometric Pinnae for 45CA
• Audio Precision APx555 Audio Analyzer
• THX AAA-888 audio measurement headphone amplifier (custom-built by THX)
• Herzan custom acoustic and vibration isolation enclosure

The Harman AE/OE Target plot data was provided courtesy of Sean Olive, Harman International, Northridge, CA, USA.

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[halcyon]

Thanks Jude!

That is a really nice fit cf Harman cure. A bump at 2K would do most of the fixing. Time to buy these babies!

 

[noobandroid]

if only i knew how to read these graphs

 

[IkSak]

if only i knew how to read these graphs

@jude I also have the same issue. It would be great if you could write a post or make a video on how to interpret your measurements

 

[udesign48]

Neumann NDH 20 vs HD650 ???
Neumann NDH 20 vs SRH1540 ??

What do you guys think?
Neumann is very well-known for their microphones and studio monitors. I'm interested in their new headphone.

 

[Roderick]

Correct me if I'm wrong... But it is 5db bassier than than Harman curve which itself is bass driven. Afterall the curve is a result of consumer research in a sense. We all know what is common reference for bass. Add +5db to it and we're very close to basshead headphones.

Would be cool if we could get a comparative measurements with some well known headphones such as hd650.

Nhd20 might be an excellent headphone but it measures more like something by dr.dre instead of headphones that are normally preferred by professionals.

 

[Raketen]

if only i knew how to read these graphs

@jude I also have the same issue. It would be great if you could write a post or make a video on how to interpret your measurements

These should help:

https://www.innerfidelity.com/headphone-measurements-explained

https://diyaudioheaven.wordpress.com/tutorials/how-to-interpret-graphs/

https://www.head-fi.org/threads/crinacles-iem-fr-measurement-database.830062/page-66#post-14617556

http://independentrecording.net/irn/resources/freqchart/main_display.htm

 

[szore]

if only i knew how to read these graphs

Graphs tell you nothing.

 

[Raketen]

Graphs tell you nothing.

FR graphs tell you (or at least illustrate) the loudness of a frequency relative to a range of frequencies.

 

[Makiah S]

I heard these an was not impressed... heard some excessive ringing and would very much like to see a CSD to confirm it what happend. There was a Pono player used at the demo site maybe was having some software problem...

Still! Frequency response was excellent when I heard an I'm happy to see the measurements behind that!

 

[Beagle]

Graphs tell you nothing.

Graphs tell you something. But so do recipes. You still have to taste in order to know if you like it or not.

 

[bagwell359]

Graphs tell you something. But so do recipes. You still have to taste in order to know if you like it or not.

In the audio hobby - one thing is clear to me after 48 years - strict adherence to either the subjective or objective isn't a likely recipe for success (meeting to goal of audio playback at its best within constraints). The few times I have had nearly ideal set-ups it took a lot of leg work, measurements, room treatments, furniture moves, capacitor in x-over changes, etc. - to get one to the place where the experience essentially becomes subjective. It's like a gateway - but don't be surprised when you get pulled back into the world of objectives to deal with some issue or other.

 

[ervin192]

Good measurements, but seems neutrality is the only highlight (the driver is small, earcups and chamber design are really commonly seen) guess it's better affordable at $300~400. Under that price range I'll give a try.

 

[Beagle]

Good measurements, but seems neutrality is the only highlight (the driver is small, earcups and chamber design are really commonly seen) guess it's better affordable at $300~400. Under that price range I'll give a try.

"Seems". A common word here at Head-Fi.

 

[ervin192]

"Seems". A common word here at Head-Fi.

okay, replace it by i'm sure.