King, how do you feel about the A40 vs AD700?
I think the positioning of the a40 is good. i never had a problem with differentiating where sounds were coming from. However, the larger soundstage of the ad700 helps spread out the sounds so that the positioning is more precise. Putting the ad700 on after the a40 really allows some space between the sounds which does help the positioning to seem better than the a40.
Also I been messing around with eq the cans. This is still in the works and will have to be readjusted for black ops when it comes out. I took the output of the mixamp and ran it into my computer and recorded the output so I could look at the best way to eq. I have come to the conclusion that the best sound signature I found so far to be the best for competitive play is a J shaped sound signature. Meaning, the bass is at a average level, the mids being recessed, and the high end cranked. I first started with private matches to adjust the sound and found that cranking the highs above 2.5k helps bring out footsteps and other audio cues. Then I look at there frequency graph and found an area in the bass to bring up in order to bring out the footsteps more. I then recessed the mids. The mids have all the non essential sound for being competitive. They are important though for immersion or fun factor. The mids have a lot of sound that can cover up important stuff since everything seems to be in the 600 - 2k range. The next couple of shots are for fun to show a few of the things I am talking about.
This is the break down of sound of just me running on the sub base. The red boxes show my footsteps. They extend the whole freq. range but tend to get covered up by the average noise in the mids (yellow box). There is a extra hard hit on the footsteps between 200 - 400hz (green boxes). By eq that range up, I get the impact of the footsteps brought out more. Also since not a lot of noises in the game tend to be in the 2.5hz on up (blue box), I eq that section up really high to get all the info like footsteps, reloads, and silent weapons, without getting it covered up by the rest of the sounds in the game.
The next screen shows me firing a silenced tar. You can even see all 30 bullets (blue box). I was burst firing it. Once again the sound of it extends the whole frequency so by eq the highs up, I have effectively brought out the silent sound without muddling it up with all the other game noise. A couple of other noises in it that are also brought out by eq the highs up are the bullet casings hitting the ground (green box) and the reload sound the last 2 sec (red box).
I will leave you with a picture of how my eq is adjusted at the moment. Constantly tweaking it of course...