Soundstaging and Imaging: Not an Illusion


A recent topic Soundstaging and Imaging: The Delusion about The Illusion
https://forum.audiogon.com/discussions/soundstaging-and-imaging-the-delusion-about-the-illusion asked
"Yet, is a recording’s soundstage and imaging of individual participants, whether musicians or vocalists, things that one can truly perceive or are they merely illusions that we all are imagining as some sort of delusion?"

It is no more an illusion than is playback in general.

An engineer may close mic, adding mix effects to simulate room acoustics. Or may use a microphone technique to capture the correct proportion of direct to reflected sound to accurately delineate the recording space on a capable playback system. Each has its advantages. The first allows control after the event enabling wart removal. The latter requires at least movement perfection. It is almost impossible to edit live performances seamlessly, albeit easier with today’s digital tools than with times past razor blade.

On a capable playback system there is no mistaking Carnegie, Albert, La Scala acoustic for digital wizardry. It is effortless to upscale the 3m x2m inter-speaker dimension to La Scala’s 16.15m d x 20.4m w x 26m h stage. It is similarly effortless for any acoustic space, artificial or otherwise. Badly done material is properly presented as a mish-mash of one-dimensional sources floating in conflicting spaces.

When upon first hearing a system, musicians and live acoustic music listeners are instantly beguiled and comment on the liveness, spaciousness, realism of the presentation, making comments like "It’s just like Joe Pass is sitting there" or "Who needs to go to concerts?" or "I can ’see’ the whole orchestra and every section in it!", it is unlikely they are all deluded.

It is my belief that those familiar with live, acoustic music, when presented with enough clues of the space acoustics have no problem fleshing it out and transporting them. On systems with poor or confused clue presentation, the brain gives up trying.

In a system which presents clues well, a component swap may alter the presentation, but is unlikely to destroy it unless the piece is egregiously awful. In an incapable system, either by design or setup, offhand changes may make a difference, but are not likely to effect a transformation. One has to start from first principles with components and setup < read ROOM > that can be proven to be capable of presenting a realistic soundstage from any source. Dimensionless material MUST be presented so. If it isn’t, there is zero chance of it presenting anything properly!

Too often, store demos present an expansive blur that properly should be presented as a cardboard cutout. The customer falsely equates $K with accuracy and thus the circle begins anew.

“The first principle is that you must not fool yourself — and you are the easiest person to fool.” - Richard Feynmann, 1974
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The key to a realistic sound stage and imaging is to work to lower the noise floor. Particular attention has to be paid to a myriad of things to get there. 

First, concentrate on micro-vibrations. Everything vibrates ... tubes, caps, resistors, turntables, equipment racks and each individual electrical component, including the chassis. 

Second, treat the room. Do you have hardwood floors that look like bowling lanes? Get some nice carpets and lay them on the floor. There are tons of products and tweaks that deal with rooms. Tube Traps, Shakti Holographs, SR HFT's are just a few, and they have a profound effect in controlling room anomalies.

Third, Speaker placement. Precise measurements need to be done to assure proper placement. Each speaker should be the same distance from the listening chair. Tow-in of the speaker is important. Moving the speakers out into the room, instead of having them flush against the wall is important.

Fourth, Explore various tweaks that lower the noise floor. Getting to the micro-vibrations as stated above will really help here, but there is plenty of help to be gained by tweaks, such as the Perfect Path Technologies products, all designed to do one thing ... lowering the electronic noise and hash coming through the system via the electrical power lines.  SR's aftermarket Black and Blue fuses also lower noise. A good power conditioner is another option. 

Once all of the above is taken care of, and only then, should one consider upgrading to more expensive equipment, including cables. Take care of the basics, and you just may find that there is no need at all to upgrade your electronics.

Frank 
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