o7_brother
Active Member
For example he didn't EQ Stax SR-404 below 50 Hz but according to this distortions measurements he can do it. Why? Maybe I missed something.
Because that kind of Stax headphones does not seal well on a measurement rig, but may seal better on an actual fleshy human head.
See the two graphs he made for the 404 Limited. First one is just the headphones sitting on his measurement rig, the second one is the same but with more pressure applied so they would seal better.
https://www.dropbox.com/s/gtqg9oykowxogrx/Stax SR-404LE.pdf?dl=0
https://www.dropbox.com/s/aaw4zzia8efznjo/Stax SR-404LE (with good seal).pdf?dl=0
Therefore it makes sense to EQ the bass by ear to some degree.