3D imaging

I'm not a fan of headphones. I haven't used mine in a couple of years. For me,speakers are my drink of choice. I actually find it fun in a way, to mark where speakers are placed,listen for a couple days,then move them to see where I'm at.

It’s OK to like speakers. There’s room for everybody in this hobby. 🤗

Thanks! I was afraid I wasn't going to be allowed in the club!

So I built my system on research by Prof. Edgar Choueiri made during his work at Princeton in his 3D Sound Lab I experienced over 20 years ago: 

The moment for me was playing on humble Sansui speakers in my home under construction listening to a recording processed through the BACCH filters, my mind was officially blown. 
BACCH 3D sound works best with very directional speakers that limit reflections. I have optimized my room from the listening position on my current system with time alignment, phase, and room interaction on 12 biquad filters operating at 96/24 on each of my 8 channels of my fully active set up. 
The image is stable and amazing on my system and it feels like being there, friends and neighbor’s jaws drop, but it actually gets better, and I’ve heard it. . . the last piece is BACCH. Take a look at the technology:
https://www.theoretica.us/bacch4mac/
Hoping to add it this Spring! 

millercarbon,do you use HFT's with traditional acoustic treatments,or are these applied alone?

Sorry for the late reply. So many threads ruined so often and so fast by the same few people I tend to say what I think needs to be said and then that's that. But anyway...

Here's a photo of my room. Its old, 2004, but its good because it shows some of what I went through. http://theanalogdept.com/c_miller.htm
The yellow panels are Owens Corning acoustic panels, the same as used inside 90% of expensive professional room treatment. There's people like Duke (Audiokinesis) you can trust to post gold. Then there's guys like me who have to work at it more. This photo is working at it. 

Just like Duke said above, its real easy to over-do it, acoustic panels predominately affect the top end, and so can really alter the rooms acoustic. So this was moving them around learning first hand just what that means. The room now has none on the walls. Only the corner tunes remain. Very effective, with hardly any downside in terms of being overly damped.

My tests were made moving whole panels around. First reflections requires only about a one foot square. It could be that if I went back and tried just a small one like that, might like it. Heck now to think of it got some in the shop might just do that. Just because it sounds great doesn't mean it can't sound even greater. 

HFT are a completely different technology, much more sophisticated, work regardless of the room, and so are used together with the same traditional acoustic panels. 

They don't have to be. Look around YouTube, there's a demo in a very ordinary room, pretty crappy room actually, way too lively, way to sparsely furnished, no acoustic treatment at all. Ted adds HFC and even on laptop YouTube you can hear the improvement. Pretty remarkable stuff.