What affects front to back depth in room/ system?

I've been moving speakers around for a while now trying to maximize their placement for a happy balance of soundstage width, focus of center image, vocal height, instrument placements, etc. I want to get the speaker placement settled before acoustically treating the room. The room is 15x20 with 8' ceilings. Speakers are setup along the 20' wall. I'm pretty happy with most aspects of the sound, but what I can't seem to figure out is how to improve the depth. Honestly, I'm not sure if what I'm after is attainable to begin with. Is it possible to have depth that reaches the listening position in a 2.2 channel sound system? The depth behind the speakers is great, just not much in front of them- unless it's one of those songs that has a part where it has that inverted phase trick. Then it washes over me. I want that all the time. Any feedback and advice is appreciated. 


I don't think this can be oversimplified. It is a combination  of things. 

* speaker placement

* room treatment

*speaker isolation

* recording styles or techniques


*music service 

*low noise in signal

I believe it is a combination of things.  Each helps but it is the cumulative result.




@veerossi - thanks for those dimensions. I don't see any issues. You are kind-of close to the back wall, but that's way better than sitting in the middle of the room, where you would experience bass nulls. Your gear looks great to me, so next steps are probably room treatment, as others have recommended.

Working out how much treatment is needed and where to place it is not rocket science. A few measurements from your listening position using Room EQ Wizard and a calibrated mic (eg., miniDSP UMIK-1) will tell you just about all you need to know. Feel free to PM me if I can help.

I am fortunate to have a relatively large dedicated listening room which allows for proper distances from the walls, This, along with abundant acoustic treatment provides for an immersive experience. I also use a distributed bass array akin to the Audiokinesis Swarm and I find that it further makes an enormous contribution to soundstage and depth.


I think the speakers have the most to do with it. Mind you I don't have a high-end system but when pitting kef r11's non meta against everything in the room at magnolia, one thing I noticed was that the kefs had an unusually deep sound stage..I wasn't listening for it, I just noticed it, and it was the first time I ever heard a deep sound stage and as you probably know all of the speakers are very close to the rear wall in Magnolia I ultimately chose them over theB&W 702s2s I have them set up in-between 2 rooms with about 12 feet behind them, using a Denon 4308, similar to the Marantz that they use in Magnolia, so nothing special.. the recording has a lot to do with it I found that with live jazz I can easily pick out the location of the instruments. Some many feet back,The whole sound is very layered.. and as one other reader had said, shutting your eyes makes a big difference especially at night.




I consulted with Dennis at acoustic fields before I built my dedicated room. He seemed very knowledgeable but said I would need about 35k to build the room. That was out of my budget. He also said my speakers would not work in a room my size. I went with an acoustician recommended by Duke LeJeune of audiokinesis to design my room and am extremely happy with the result.