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haralanov wrote:

It is certainly very very important, but how many systems you have listened where you can not be able to recognize the HFs as disconnected part of the sound? I just wanted to ask if you have ever heard a system, where the sound of the tweeter is COMPLETELY part of the midrange. I know there are a lot of people who insist they integrated their tweeters perfectly, but when I visit those people, I can always identify the sound of their tweeters. When we talk of channel integration, we must be able to identify the axis where the sound comes from without hearing any parasitic sounds coming from over or under that axis. Most of the systems I have heard have their sound fixed at the tweeter axis. Yes, they sound integrated, you can even listen them at 1m away without hearing any integration artifacts, but they do not sound like seamless extended midrange - they rather sound like seamless extended HFs. Everything have taste of high frequencies, even when the level of the tweeter is not set to be higher that necessary. One of the most difficult things in audio (actually it is the most difficult of all) is to make the sound to come from the midrange channel axis, which have to "pull" the sound of the tweeter and to mix it perfectly within itself. It may take a lifetime to do this right, and sometimes lifetime is not enough… But once it is done right, most of the psychoacoustic barriers get crashed, so there is no bridge between you and the music, and the music content of the recordings injects directly in your mind, so directly, that you totally forget who you are and your mind becomes just part of the music and you even begin to feel you are composer of the reproduced music.

Yes, and no. The Mind Injection is certainly there and your run for the state of listener to become a composer of the played music is fine but why suddenly it has to have any direct association with HF? The art of tweaking listeners mind is a complicated process of electro, acoustic and psychological alchemy and the proper setting of HF is only one, very small and very significant ingredient. It is like for a person who fasts for 30 days to admit the he abstain from eating pork kindly. If one does not eat any food then what deference it makes that the person does not eat kindly?

If you look at the Jorge’s hierarchical scale then the relationship with tweeter lives at the very first level that he call “Perfect Resolution “ or at my level of Six-Leveled-Listening Benefits it would be the very first “Static perception”:

http://www.goodsoundclub.com/Forums/ShowPost.aspx?postID=50#50

For sure HF reproductions is difficult in audio, there are reasons for it but I think in context of this there the meaning of HF a bit exaggerated. BTW, if you would like to hear really good HF reproduced by playback then try a good gramophone with somebody who knows how to play 78s properly. There you will get HF that you will remember for very long time.

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