Haha, thanks, Marv, for doing the measurement. Now I know what frequency response I was able to get out of those drivers.
Yeah, I meant to approximate the tonal balance of the SR-009 with this headphone, though the level and quality of the mid was more my personal preference. I wanted a headphone that would do vocals justice on a variety of sources.
The slight channel imbalance, I think, is actually due to the earpads. That's why I left the ESW9 earpads so that you can put those on. Please try another measurement with the ESW9 pads, if you don't mind, because I think swapping to those will have a pretty sizable effect on the graphs.
On a side note, CEE TEE, I have finally decided on what headphone to work on next. I think it'll be the Beyerdynamic DT770 Pro Limited Edition. That one won't break the bank, and it seems like it's among the very few full-size headphones that won't necessarily require an amp. The other factor being that it's relatively easy to obtain a new pair still.
I had thought of Denons, but those are really hard to obtain now, and given that I still like Beyer's overall tonality, I think the 32 Ohm DT770 is a safe choice. Well, we'll see!