How do you judge your system's neutrality?



Here’s an answer I’ve been kicking around: Your system is becoming more neutral whenever you change a system element (component, cable, room treatment, etc.) and you get the following results:

(1) Individual pieces of music sound more unique.
(2) Your music collection sounds more diverse.

This theory occurred to me one day when I changed amps and noticed that the timbres of instruments were suddenly more distinct from one another. With the old amp, all instruments seemed to have a common harmonic element (the signature of the amp?!). With the new amp, individual instrument timbres sounded more unique and the range of instrument timbres sounded more diverse. I went on to notice that whole songs (and even whole albums) sounded more unique, and that my music collection, taken as a whole, sounded more diverse.

That led me to the following idea: If, after changing a system element, (1) individual pieces of music sound more unique, and (2) your music collection sounds more diverse, then your system is contributing less of its own signature to the music. And less signature means more neutral.

Thoughts?

P.S. This is only a way of judging the relative neutrality of a system. Judging the absolute neutrality of a system is a philosophical question for another day.

P.P.S. I don’t believe a system’s signature can be reduced to zero. But it doesn’t follow from that that differences in neutrality do not exist.

P.P.P.S. I’m not suggesting that neutrality is the most important goal in building an audio system, but in my experience, the changes that have resulted in greater neutrality (using the standard above) have also been the changes that resulted in more musical enjoyment.
bryoncunningham
Cbw’s EQ challenge to my operationalization of ‘neutrality’ is a good one. Here is my understanding of it:

If you were to give a unique EQ to every track in your music collection, then you would meet the conditions of my operationalization, namely:

(1) Individual pieces of music would sound more unique.
(2) Your music collection would sound more diverse.

By meeting the conditions of my operationalization, we would have to conclude that the system was moving in the direction of greater neutrality, in the sense of freedom from coloration. However, there is reason to doubt that, since the use of EQ can easily change recordings so that they are MORE colored (what Cbw is calling “excess contrast”). And MORE colored means LESS neutral. Hence the use of track-specific EQ seems like it defeats my operationalization, since it meets conditions (1) and (2) while resulting is less neutrality.

I think Al’s solution to Cbw’s EQ challenge is valid. My operationalization is not defeated by the EQ challenge IF you interpret the use of track-specific EQ as resulting in many different “virtual” systems. That is because my operationalization is a method for evaluating neutrality WITHIN A SINGLE SYSTEM, not across multiple systems. If this feels like my operationalization is being saved by a technicality, then I agree with you. To make matters worse for me, I think the following is a valid reply to Al’s solution…

The use of track-specific EQ results in NEW RECORDINGS, not MANY DIFFERENT "VIRTUAL" SYSTEMS.

An EQ setting A, when applied to all the tracks played through a system, is obviously a characteristic of THE SYSTEM. But if you have a unique EQ setting (A, B, C…n) for every track played back through the system, it is less clear what whether the EQ settings are characteristics of THE SYSTEM or characteristics of NEW RECORDINGS YOU HAVE CREATED. Here are the two interpretations of the use of track-specific EQ:

(1) Original recordings with many different “virtual” systems.
(2) New recordings with a single, constant system.

Under interpretation (1), my operationalization of neutrality is saved from Cbw’s EQ challenge by Al’s solution. Under interpretation (2), what happens to my operationalization?

It is saved by another technicality. Under interpretation (2), the coloration is part of the RECORDING, not of the SYSTEM. And coloration in the recording does not impugn the neutrality of the SYSTEM, however undesirable the resulting sound might be.

So, in my view, Cbw’s EQ challenge fails to defeat my operationalization of 'neutrality.' The problem is: I keep thinking there is something in the spirit of his challenge that remains valid, something having to do with the need for a LIMITING CONDITION in the operationalization. Now I will have to do more mulling…
Bryon - I'm under impression that you discuss mostly frequency response of the system hence word EQ is repeated often. What about whole bunch of other things like macro and micro dynamics? how do you measure "sweet sound" or "relaxed sound". It is difficult to discuss something that cannot be measured and is very subjective. How do you know how it supposed to sound? Sitar from Northern India sounds completely different than Sitar from southern India. How do you know. From the tone of discussion I got even impression that neutrality is considered a virtue. I'm not so sure of that.
Bryon - I'm under impression that you discuss mostly frequency response of the system hence word EQ is repeated often. What about whole bunch of other things like macro and micro dynamics?

Frequency response has been mentioned a few times on this thread, but not much by me. One or two posters have suggested that neutrality was reducible to frequency response. I do not agree with that idea, since, as Shadorne and Audioengr pointed out, FREQUENCY response does not include TRANSIENT response. And I quite agree with you that dynamics are an important consideration when evaluating an audio system.

As far as the phrase "EQ," its first appearance on this thread was just a few posts ago in the context of discussing room correction. Then it reappeared in Cbw's EQ challenge. So far as I can tell, it has not been a particular focus of mine or anyone else.

It is difficult to discuss something that cannot be measured and is very subjective.

This may be true, but that doesn't mean it isn't worthwhile to try. Art "cannot be measured and is very subjective," but people have found endless ways to talk about it, and some of them are useful.

How do you know how it supposed to sound? Sitar from Northern India sounds completely different than Sitar from southern India. How do you know?

By having heard one.

From the tone of discussion I got even impression that neutrality is considered a virtue. I'm not so sure of that.

Some of the posters seem to believe neutrality is a virtue, others clearly not. My own view is that it is a virtue, but not the only one.
Very interesting discussions, guys! Bryon, I think you do misunderstand my position after all. Basically, I do not believe that "neutrality" can possibly exist at all, whether we are talking about a single piece of equipment, the entire system as per your definition, or in live music; and, as Kijanki says, I seriously doubt anyone would think it a virtue if it did. I am not trying to make the perfect the enemy of the good - I don't believe there is a perfect.

Some other thoughts - Bryon wrote "The success of room correction relies on the technology involved and how it is implemented." This completely ignores the human ears setting up and/or listening to the result of the technology (not to mention the designer of the technology). The dealer who set up one room correction system I heard clearly thought he had done everything correctly, and he thought the result sounded just fine, yet the result sounded awful to most he played it for, worse than before the correction. I have heard others that made a huge positive difference.

As far as Bryon's characteristics of a good playback system vs. characteristics of good musical playback, I completely agree that these are not the same thing. Every playback system is different, and two completely different systems can both result in good musical playback. This seems obvious. Where we differ is I don't think either has anything to do with "neutrality."

Bryon wrote "A neutral room will make it easier to achieve a neutral system." There is no such thing as a neutral room. As I said in a previous post, the closest thing might be a recording studio. But the purpose of recording studios is NOT to make things somehow "neutral." In fact, as I said before, it is for the exact opposite purpose - removing as many characteristics of the room noise as possible allows the sound engineer as much leeway as possible to create the sound that he wants - to create the sound color of the engineer's personal choice. This also goes along with what I said before about designers of audio equipment - they are not striving for some sort of "neutrality." They are aiming at their personal ideal of what the sound should be.

Bryon wrote "It seems to me that the value of an audiophile developing expert perception of the playback of recorded music is self-evident." Again, I don't think there is any disagreement here. The disagreement is over whether "neutrality" has anything to do with it.

The bottom line here (going back to the OP) is that many of us feel that just because you change one piece of equipment in the system, making 1) individual pieces of music sound more unique, and 2) your music collection sound more diverse, this does not mean you have operationalized the term neutrality. It just means you have a better sounding system.

Let me give you an example, again going back to the OP. Assume a room with good qualities for music playback, and assume a very high quality music playback system (which this room is of course part of). Now, let us say you replace very high quality preamp A with very high quality preamp B, keeping everything else the same. How will you know which one is more "neutral"? I submit that you can't. But you can know which one makes the system sound better to you. And I would also guess that 100 audiophiles that listened to this comparison would probably split close to 50/50 on which one did sound better, and that there would be many different reasons why each made his choice. This is what Kijanki is driving at when he says "how do you know how it is supposed to sound?" There is no one answer to this question, which is where I think your "neutrality" concept/operationalization falls apart, despite your VERY good arguments - it requires that there is ultimately one answer. But thankfully, there is no black and white in music or music playback.
How do you know how it supposed to sound? Sitar from Northern India sounds completely different than Sitar from southern India. How do you know?

Bryon wrote: "By having heard one."

That's the problem - by having heard one where? In small humid room or big concert hall. What brand of Sitar?

As for neutrality being a virtue - Do you think that person who likes more bass than neutral should force himself to listen at home the way he doesn't like (neutral). If I cannot hear treble as well as when I was young - am I allowed to get brighter system. Overall result might be neutral but to who's standard (since I cannot hear treble in live performance). Whole issue is very foggy. I can only say what sounds good to me. As Learsfool mentioned sound of instrument in sound-dead studio is colored by recording engineer (therefore not neutral). Why do I have to adhere to this. Some instruments like cello have very complicated radiating pattern (only backwards at 300Hz I think). Can you imagine what mess recording engineer can make here. At the concert sound is far from perfect and different each time. Open air concert is way different than small auditorium etc.