Bob and Asa, I think I am getting a better handle on what we are really discussing here. I think(tell me if I'm wrong) that we are really discussing whether it is worse to have a signal degrading bottleneck somewhere in the system, as opposed to an information-limiting source item. Am I getting this right?
If so, I will try to address that point, as well as the other ones.
First, Bob, I really don't disagree that often times a speaker has the most difficulty being an accurate component. As I stated in my other post, I feel that all the components are vital to the system, otherwise the system wouldn't work at all. And if the speaker really does suck really bad, then even a great source won't help it. However, most speakers don't suck all that bad that they will mask an improvement in the source. Here is my point: Most speakers will do a relatively decent job at reproducing the majority of the sound. Maybe not great. But the higher priced speakers aim primarily at covering a wider bandwidth, to give true fullrange capability.If your definition of a better speaker means wider bandwidth, then I may agree that going to a true fullrange speaker from a limited bandwidth speaker will give more of a change than improving the source. Notice that I said "more of a change", and not "sounds better" or "more musical". This is an important distinction. I don't have crappy speakers, and I certainly understand the need for good ones. When you make the speakers better, more signal information will be passed, and they will make the system sound better. I have no problem with that at all. I simply make the statement that getting more signal information to the speakers will make them sound better too. But it will do it in a different way. The speakers, when fed a better signal, will respond with a better sound. Also, the signal, when going through a better set of speakers will respond with a better sound.
The question is, which is more important? And this comes back to the point I made at the top of this post. Is the degrading of the signal by the downstream components more critical than feeding the system with a better signal from the source. My answer is they are both important. If you have a real bottleneck anywhere in the system, you have a problem. From my personal experiences and tastes, I find that even lower priced speakers will easily convey the emotion of the music, when fed with a good source signal. They may not give as much detail, or frequency extension on either end, but they will allow the basic emotion of the music to be heard, unless they are flat-out horrible. This is because enough quality information is available to them from the upstream components, that the prime ingredient of the music gets through: the emotional content. When a poor source is used, then often, not always, the emotional content of the music is robbed of its life, and even the best and most expensive speaker cannot restore that, no matter how extended and detailed it is. And this is much more prevalent today than one might think.
So perhaps this is a "chicken and egg" thing, but I still contend that for a given normal system, that the source will provide more "musical" improvement than speakers will. I will grant that upgrading speakers will give more extension, possibly, and greater detail. I think alot of the 2 sides of this discussion relate to the types of source used. At the risk of bringing digital and analog into the discussion, most digital users are more in the speaker camp, and more analog users are in the source camp. This is because there is a greater "delta" in the sound of the source when analog is introduced into the scenario. Up to this point, digital has only progressed just so far. It is not even in the same galaxy with good analog. So for digital users, the differences in source don't seem so great. But when you hook up a turntable, then some shock starts to set in. I hate to bring that into the discussion, but it is unavoidable, and foolish to ignore it.
Asa, I agree, and I stated carefully, that electronics "at best" can pass the signal perfectly, and I did not intend that to mean that the "best" case is ever attainable. It was simply a reference to the best (im)possible scenario, and not the normal scenario. My wording was not intended to imply that the "best" case of perfect pass-through is attainable.
I also agree with your point that system synergy is very important and can be a very large factor in the overall presentation of the music. As are all of the other components, the room, the recording and everything included in the musical experience.
Again, I agree that this may not hold true to all system types and symmetries, especially regarding the case described above, regarding analog and digital sources.
So, at the expense of appearing stubborn in my position, which I probably am, I feel very certain that this position is correct, when all things are considered. I reiterate that the order of importance is the same order that the signal travels through the system, and each component will define what the next component in the chain is capable of delivering, in the "best case". The next component's job is to degrade the signal in the least possible way, and pass it to the next component. Since the source defines the quality of the signal entering the system, it provides the benchmark of what that system is ultimately capable of reproducing. From there on down the chain, there is only a string of degradation, and the job of the downstream components is to degrade it the least amount possible.
Notwithstanding this, I do agree that a horrible bottleneck somewhere down the chain, can destroy a large part of the signal that even a great source is feeding in. In this case, it is entirely possible that removing that offending component and replacing it with a better one can let more of the signal through, and make more of a difference than the source improvement.
Now we come to the quandary. Do we think that average downstream components will pass enough signal to reveal a better source, or do we think that great downstream components will make up for a lesser source? This is the "chicken and the egg". From my experience, the average components will reveal enough of a better source to make a more musical result, than a great speaker or amp passing more information from an inferior source.
I do appreciate both of your interesting comments and points of view, and it has made this a most enjoyable discussion. Bringing any opinion under strong scrutiny is always helpful to one's self-evaluation regarding said opinions.