Two positional variables to play with
angle/toe out: This is the variable that folks generally discuss. I used to strike a balance between stereophonic positional cues (more toe out) and bass response, settling on a thumb's width clearance. Since I started using a speaker amp (Portal Panache), the bass response has improved so much that this compromise is unnecessary. Currently, my ear speakers are nearly wide open.
headband position: You can move the headband fore (toward your nose) and aft over a fair range and still maintain a balanced and reasonably secure position. With the freedom of not having to preserve bass, I've been experimenting with this parameter and have found that as the headband is moved forward, there are noticeable pleasing alterations in spatial cues. If you go too far forward, the frequency response changes suddenly for the worse, so I back off a tad. Like I said, I'm still fiddling but at this point I am reasonably confident that a somewhat forward position affords more speaker-like imaging.
disclaimers: My audio discernment is special, just like yours.
I have no need to evangelize. Be an audio agnostic regarding other's audio opinions. I keep losing my focus on analyzing my equipment, due to distraction by the music.
I need a new amp for these - I want that kind of bass.
