[ADUHF]

A topic from another forum that may (or may not) help to explain a bit more re some of my recent thinking on the subject of in-ear targets, DF compensation, etc...

https://www.audiosciencereview.com/...ding-headphone-measurements-by-resolve.30846/

 

[ADUHF]

I am still leaning on Ora's graphs though for EQ-ing my 250 ohm DT-770's. And mostly use the DF responses of other headphones as my targets for that.

Will try to post some more on this soon.

This is still an ongoing process, but there's some more recent info on the above here, including examples of some of the target diffuse field headphone response curves I've been using as a basis for EQ-ing my DT-770's, which are actually based on groups of several different headphones...

https://www.audiosciencereview.com/...ng-the-250-ohm-beyerdynamic-dt-770-pro.26249/

An example of one such DF target developed from headphone measurements in Ora's graphing tool...

This DF target was tailored somewhat towards a closed headphone like the DT-770, which is already well-extended in both the treble and sub-bass. So it may not be as applicable to something like an open dynamic headphone with less ability to extend into the lower frequencies.

And it would only be applicable to other similar diffuse field compensated headphone measurements made with Oratory's graphing tool.

 

[ADUHF]

I've also more or less settled on a range of -1.0 to -1.5 dB per octave (or an average of approximately -1.25 dB/oct) for the approximate slope of my target diffuse field curves, and also the approximate slope of a neutral loudspeaker's sound power response (excluding any falloff in the sub-bass).

 

[ADUHF]

I wonder which HATS was used for the particular one below? Is this one from 70's?

Couldn't answer this before, but I believe this DF and FF graph is for the HBK 4128-C. It appears to be the same as the graph in this brochure anyway...

https://www.bksv.com/media/doc/Bp0521.pdf