There is only one instance I recall over the years where I heard multiple sets of speakers set up in teh same room in different spots concurrently all do "holography" to the nth degree. That was at a local Tweeter store a few years back. One pair were midrange Martin Logan Electrostats and the other two a pair of FOcal PRofile 918s and 928s. Source and amplification was midrange Krell.
I doubt these were set up with any great precision or that the gear was inherently superior, though all were very good. More likely the large rectangular lively room with untreated walls and a lot of reflection coming from a lot of wall area behind the listening location were the primary reasons.
The other singular most holographic demo I have ever heard was an mbl 111 demo at United Home Audio in Annapolis junction. Again the key here I think was the large showroom with ample space both behind the speakers and the listener combined with a really optimized setup. The area behind the speakers was heavily treated, side walls not parallel, and a good 20 feet or more deep with similar space behind the listener.
With omni directional speakers like mbl or even bipolar speakers like Magnepan, a lot of distance to the rear wall is usually required. Speakers may be 1/3 or more well into the room from teh front wall, and the setup is optimized based upon how the relative sound pattern radiates and is dispersed.
Once you a have a room and speakers and high quality low distortion gear suited to the task, tweaking to get things just right will generally take some time and yes small differences in placement are significant.
So its no easy task to get all of that just right which helps explain why it is not that common.
I doubt these were set up with any great precision or that the gear was inherently superior, though all were very good. More likely the large rectangular lively room with untreated walls and a lot of reflection coming from a lot of wall area behind the listening location were the primary reasons.
The other singular most holographic demo I have ever heard was an mbl 111 demo at United Home Audio in Annapolis junction. Again the key here I think was the large showroom with ample space both behind the speakers and the listener combined with a really optimized setup. The area behind the speakers was heavily treated, side walls not parallel, and a good 20 feet or more deep with similar space behind the listener.
With omni directional speakers like mbl or even bipolar speakers like Magnepan, a lot of distance to the rear wall is usually required. Speakers may be 1/3 or more well into the room from teh front wall, and the setup is optimized based upon how the relative sound pattern radiates and is dispersed.
Once you a have a room and speakers and high quality low distortion gear suited to the task, tweaking to get things just right will generally take some time and yes small differences in placement are significant.
So its no easy task to get all of that just right which helps explain why it is not that common.