This is my first experiment with 3D audio. I am not quite ready to upgrade my main home theater yet, but I've decided to try adding the height speakers in my secondary viewing area: the living room. So here is my weekend project: Initial configuration: Energy Take 5.1 speakers, Denon X3300W receiver, Samsung 4K Blu-ray player. What I decided to do is to replace the two main Energy front speakers with my old and currently unused floor-standing Signet speakers. Not a perfect match, but I paired Signet's with Energy satellite speakers before for 5.1 and 4.1 configurations and they worked reasonably well together. I have installed the two former Energy fronts up on the front wall close to the ceiling. This will have to suffice for now, as I am not ready to install anything on the ceiling. I wish I could also put height speakers on the back wall, but my Denon receiver can only handle 7 speakers max. I then ran the full Audyssey XT32 calibration and played a couple of 4K movies with Dolby Atmos tracks. Will be watching more Atmos and DTS:X movies in the next few days. The first impression is good! I can definitely hear the benefits of the height speakers: helicopters overhead, distant thunder, etc. all sound way better! And it seems that even the traditional 2D surround sound field has been improved, became more precise due to the addition of the new speakers, though this might be subjective. However, I think putting speakers on the ceiling and having 4 height speakers instead of 2 would've probably produced a much more dramatic result, based on some Dolby Atmos demonstrations that I participated in. So if I ever decide to upgrade my main home theater I think I will want to go with 4 ceiling speakers and will need a 9.1 receiver for that. But that's way down the road. For now I will just enjoy this entry-level 5.1.2 setup. Anyone else tried height speakers? Please share your experience!