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In the Forum: Playback Listening
In the Thread: Basic guide to advanced audio
Post Subject: Audio window is formed mainly by the MF channel - the tweeter only deforms it (in most of the cases)Posted by haralanov on: 7/30/2011
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 Jorge wrote:
Haralanov,  I guess you mean to say disconnect the tweeter on one side of your playback?  not the whole left side of the playback...

No, Jorge, I meant to disconnect the whole left or right side of the playback system. If you do not feel any deficiency of the recording’s atmosphere, then your system is absolutely top class. Try it. Romy can try it too. Then both of you may report what you hear, because Boston is too far away from me to listen your acoustic systems…

 Romy the Cat wrote:
Still, the main frame of sound shall not be formed by tweeter

You are absolutely correct. I have always said that. The main frame of sound should be formed by the midrange/widerange channel and the size of this frame directly depends of the physical size of that channel.  The only task of the tweeter is to help the midrange/widerange channel to reproduce the full spectrum of the overtones of the instruments and their decay to silence – nothing more. It should not affect the properties of the audio window (but in reality it affects it - practically in ALL of the systems I have ever listened)...

 Romy the Cat wrote:
and this why I feel that haralanov’s illustration  above  regarding the changing of the presentation window shall not be affected by tweeter alone, at least not as much as haralanov depicted.

I remember you said that in your installation there is no difference in sound when your tweeter is working/not working. That’s why your audio window does not deform (despite you have taken care by it's precise time alignment). And I’m talking about deformation of space when only one of the stereo channels has being listened. It is completely different story when the other channel is playing – a lot of the defects gets masked.

 Romy the Cat wrote:
BTW, in the subject of integration of tweeters it is VERY important to have the TTH characteristic match between MF and tweeter, this is my few is super important and it very seldom paid attention to.

It is not only super important – it is super super critically important. I don’t know how close TTH characteristics your compression driver loaded in MDF horn and ribbon tweeter have, but my drivers are made to have absolutely identical TTH and dispersion patterns – same type of magnet systems, same type of voice coils, same type of paper, same type of radiation principle and so on… The tweeter is born to be the missing sound part of my widerange channel and there is nothing accidental in its sound.

 Romy the Cat wrote:
…it would be interesting to let you Haralanov to hear my installation as it is today and to hear your opinion about HF integration in today’s Macondo.

Yes, the demonstration is the only way to know exactly what type of sound/music presentation you have in your room, I’m sure it will be very interesting and educational for me, but too bad you live on the other side of the planet... Given the fact I cannot visit your room, could you describe as much in detail as possible what happens with the sound when your switch off one of the Macondo’s stereo channels? I'm very curious to know and I’m sure I will almost hear the actual sound by just reading your descriptions (it is always the case).

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