why 3D Holographic sound

I had a similar problem with my VR4JRs and resolved with tweeter diffraction devices offered by DifFraction be Gone at:
http://www.stereomojo.com/Diffraction%20Be%20Gone%20Review/DIFFRACTIONBEGONEREVIEW.htm
The are essentially pressed wool felt pads that surround your tweeter drivers. I tried to make my own but could not find the correct material online or locally.
I am in no way connected to this company. I tried their money back offer and will not be sending them back because they really tightened-up image placement. It is a solution incorporated in many off-the-shelf products such as Dunlavy speakers and a few others.

3 dimensionality has to do with reproducing the sound waves while retaining the phasing of the live performance. Wall/cieling,floor,reflections will fill in and confuse the compressions and rareractions, and ruin the 3 -D effect.

Do you have a headrest or is your head unobstructed from the back when seated? I find a headrest interferes with imaging and depth, though seems to increase perceived bass.

Regards,
Will

If you wear glasses....remove them for best sound. They resonate