What does the audio term 'air' mean?


I have had an audio system of one kind or another for more than sixty years. My first one in high school was a Sears Silvertone two speaker stereo that folded into a suitcase. I took it to college with me. Air was not even something I thought about, yet I think I enjoyed music perhaps a bit more than I do now. That had to do with juice in my brain and the newness of life and music. 

I have taken the same steps as most audiophiles, spending first in the hundreds of dollars, then in the thousands of dollars, and now in the tens of thousands of dollars. I doubt that I will ever own an audio system over a hundred thousand dollars, but I very well may have put that much into my system with constant upgrades. 

I think I began to notice what I call 'air' when I could tell the difference between vinyl and digital. I am talking about the digital of yesteryear, and perhaps a bit now, too. Many years ago, album producers began putting out vinyl that was marked digital. When I questioned the salesperson, he said it was just better. Listen to it myself. At the time, it did sound more accurate. More defined. The quality of 'air' was not on my mind.

It was when I began to upgrade my analogue front end that I thought that vinyl sounded better than digital. Of course, digital was still pretty crude back then. My system was still in the thousands of dollar category. NAD receiver, Energy speakers, and I purchased a used Rega 3 for several hundred dollars. I could not really say why I thought analogue sounded better. I told my friends it was more 'present.'

When I reached the point where I could hear a soundstage, the question of space came to mind. How high, how wide, how deep? Later, I began to hear instrument placement. But that still didn't beg the question of 'air,' even though there was something separating the instruments. I think I was still thinking in terms of space.

When I went stereo shopping with friends who had more money than I did, I was able to listen to more expensive speakers. Dynaudio were becoming one of the most popular speakers. I immediately didn't like them. I couldn't say why. They were tight, had good bass, and threw a nice soundstage. I think they sounded 'hard' to me. The attacks were very tight, but not very forgiving. It was not the way I heard music.

I went shopping with a friend who had gotten an inheritance and we listened to Wilson Sophias. He was hooked and bought them. To my ear they sounded a bit dry. So did B&Ws, and I came to understand that their was a British sound which people thought was accurate. And it did sound accurate to my ear, but not quite like music.

Music not only travels on air, it is vibrations on air. And the more I listen to live unamplified music, the more I hear that it is not as well defined as certain 'accurate' speakers portray it. A lot happens as it travels through the air. In orchestral music the instruments get jumbled together to some degree. In other words, there really is not space between instruments, however, they do seem defined within the soup of air that hits my ear.

Now that I own a pretty decent system, Sonus Faber Olympica Nova 5 speakers, VPI Prime Signature 21 turntable, Audio Research Ph-7 phono preamp, Pass XP-30 preamp, and a most wonderful amp that most of you have probably never heard of, a Hovland Radia, I sometimes marvel at the air I hear both in analogue and digital. I have a Moon 280 D streamer and on really well recorded, high bit-rate sampling recordings, I can hear the air that I hear on analogue recordings.

But I really don't know how to explain this wonderful thing I hear. I call it 'air' because I have heard that word used by audio writers. But what is it exactly? I wonder if any of you can define it better than I have. 

audio-b-dog

Space between instruments.  Ability to hear the reverberations of the instruments in a concert hall.  The ability to capture overtones.

Above threads explain air well, Sound stage spaciousness and openness in higher frequencies is what I hear. I've long been attracted to open baffle and now horns as best at providing the sound stage spaciousness.

 

Part of your explanation of air is what I define as presentation, this especially important for digital. Analog is or should be our reference for a 'natural' or more lifelike presentation, analog has an inherent 'flow' digital may have difficulty achieving. Air is part and parcel of this natural flow or timing of musical events, minus this digital can seem rushed and somewhat confused, optimal clocking critical for digital.

 

Our listening rooms can also have a major impact on sense of air, I use clap test, want my claps to have some echos/reverberations, I believe far too many rooms excessively damped down in order to tame highs..

 

OP, your decades long audio experiences pretty much mirror mine, I've heard the exact same thing with the equipment you mentioned.

My first HiFi speakers were Dyna A25s.  I went off to college, and listened to classmates’ systems with AR 2ax, 4x, and even 3as, and while there was definitely something to admire…a smoothness of tone, there was also a closed-in quality…a lack of “air”.  The Dynas had it, but didn’t have the thump I wanted, and that led me to Advent loudspeakers, which had both the thump and the air.  
But where I really got to hear the air was with Stax electrostatic headphones.  Later, there were ESS Heil AMT-1 Towers, Dahlquist DQ-10s, and many ADS/Braun dome tweeter models. Speakers in general today are airy.

audio-b-dog,

Your question seems to me more articulate than the responses it got, so it's kind of hard to know what to say that you haven't already thought of.

I don't know what you mean, however, when you write that "music not only travels on air, it is vibrations on air." Uh...yes, but so what? What would this have to do with the meaning of "air" in the audiophile context?

In the same paragraph, you go on to say: "In orchestral music the instruments get jumbled together to some degree. In other words, there really is not space between instruments, however, they do seem defined within the soup of air that hits my ear." Well put! Very resolving audio systems, playing very fine recordings, can create a spatial image that is actually more vivid than would be a live performance. I've heard many string quartet performances, for instance—kind of an ideal ensemble to judge in terms of instrumental placement, since there are just four of them spread across the entire "soundstage." In fact, I play cello. But I can follow individual instruments better on certain string quartet recordings than I have ever been able to do in a live performance, even though live I have my eyes to give visual cues about where the sound is coming from. 

For what it's worth, I find this effect both exciting and musically relevant: it's easier to grasp complicated counterpoint if you can concentrate on each "voice," and by "watching" the sound in a virtual space (with eyes closed!), this is easier to do than by listening alone. 

Finally, I've always understood "air" in the audiophile context to mean something like the natural spaciousness that is palpable when one is present to a performance involving several instruments in a large hall. My living room, where my rig is set up, is large, but not as big as a concert hall! So there's an inevitable cramping of the spaciousness of a live performance when one reproduces it in a listening room. "Air" refers to the simulacral recreation, by whatever means, of that original spaciousness. 

My first 'high end' speaker were the AR 3A's, didn't last long once I heard speakers like Dahlquist DQ 10's, Maggies, Eventually did get the Dahlquists, still have them today, stuck in a closet. Went on to other Carl Marchisotto designs with Alon/Nola, open baffles do air. Had a roommate back in the day with  ESS Heils, another airy speaker. I even liked Mirage speaker design back in the day,. No overly precise imaging for me, airy means spaciousness, individualized images projected as three dimensional bubbles without overly precise drawn outlines.