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 on: January 25, 2017, 08:04:16 pm 
Started by vrao - Last post by briefremarks

I have not watched the video, but am somewhat familiar with Toole, and I think Linkwitz more or less follows Toole's design ideas.

What I have understood from Toole/Linkwitz is that they treat reflections as good and necessary BUT only if the reflected sound and direct sound have the same quality, so that as we humans "stream" the two together it creates a realistic auditory scene.

So both Toole/Linkwitz seem to prefer monopole/dipole type configurations with uniform power response (on-axis and off-axis).  This seems very different from designs that stress constant/controlled directivity (like horns), and more direct vs reflected sound.

What you seem to be doing is increasing the direct/reflected ratio, is that correct? Or just minimizing certain problematic reflections?  Wondering if the lack of open space behind you in your room is a unique situation you need to manage.

Also, at least with Linkwitz, there is little discussion of IM distortion (he likes long throw drivers for example), need for high sensitivity, dynamic range needed, and so on.  Not to mention generally ignoring the "front" end!!

 on: January 25, 2017, 07:12:40 pm 
Started by vrao - Last post by vrao

Yes indeed   Good job !


 on: January 25, 2017, 07:07:22 pm 
Started by vrao - Last post by PeterSt
Hey VJ,

What I noticed is that this (more and less) off axis response mighty much looks like the F-M curves of the Orelo MKII. Not sure whether it would represent the same, but it may.


 on: January 25, 2017, 06:37:39 pm 
Started by vrao - Last post by vrao

Everyone took a different message from this talk...

For me it was the speaker behavior off axis, power response as he called it. This is most critical, as I've experienced with the addition of acoustic treatments. If the reflections do not replicate the original wave (uneven frequency, temporal, power output), will fail authentication ... as the reflections are not confirming the first/original wave from the speaker (this in addition to a whole other parameters).

Speaker testing .... looks like is still a long way off from being standardized.


 on: January 25, 2017, 06:19:20 pm 
Started by vrao - Last post by PeterSt

So ... I just learnt that I must listen to Mono for testing because I am used to that as I am listening to a (television) center speaker always anyway ?!?
I don't even have a center speaker.

The end of it unveils all : when it doesn't sound good, it is the recording. But take a nice pair of H-K speakers first. prankster

 on: January 25, 2017, 05:43:33 pm 
Started by vrao - Last post by CoenP
P.s. The truth might be a bit hard to digest. It is what it is straightly put .... untrained ears variable and biased results. Untrained golden ears .... same. Go thro the golden ear training program from HR or Phillips .... there is some standardization there.

Agree, I would not expect something else. Standardized training of "ears" is a very interesting concept. Is it possible at all?

Good sound (if such a thing exists) is a pretty tough subject to capture scientifically. And if you were able to capture it, what would that mean in an "average" consumer setting where looks, practicality and price are more important? Ironically the very group that chases the same goal are the despised (untrained) audio fanatics. 

Blind testing is in my opinion somewhat handicapped though it may lead to a wonderful result. Ever tried to eat delicious gourmet food blindfolded or nice food that was purposely colored in an unnatural tint? The same food actually tastes different has scientific research shown.

regards, Coen

 on: January 25, 2017, 05:25:43 pm 
Started by vrao - Last post by CoenP
Especially for the American readers among us, I'd take the "you" which Coen presents several times, figurative, and not as addressing VJ directly by it. Maybe it reads the same in English/American as how we Dutch bring such things forward, but it easily is not.

And Coen, if it was your intention to address this to VJ after all, you will speak up, right ?

No, not at all. This is about my opinion on the content of the video and I'd be gladly confronted with insights that dispute it! The "you/your" should be taken as part of the expression, not addressing a specific person or group.
I got triggered into reacting to this thread solely because of the video (actually about the half i've seen) VJ shared here. The interpretations presented in this part were in my view at least disputable if not of low relevance. Please note that I have no problems with the scientific approach at all, but i object to the lack of prudence wrt to the interpretation of the results.

Now, I probably missed the more interesting parts Wink lets spend some time on the second half!

regards, Coen

 on: January 25, 2017, 04:53:03 pm 
Started by Shreekant Somany - Last post by PeterSt

Are you now saying that if the file name does not contain "folder", it does not show ?

Or maybe more clear for you :

What name does NOT show ? (literal example please !)
-> But test this against the name (after renaming) which DOES show ! So I want one example which does not show under name xyz-etc.jpg but which does show under folder.jpg and I also need ONE example of where it does *not* show (answer could be "middle pane").

I hope you can answer soon, because I like to solve this (soon).


 on: January 25, 2017, 04:45:57 pm 
Started by Tore - Last post by Tore

 on: January 25, 2017, 04:10:26 pm 
Started by vrao - Last post by vrao

Since I was alerted to the nuances of a prior post, a bit of friendly exchange ....  all in good faith  Wink

Someone the other day touted graphenes cables as a good choice for conductors.... the  "fact"  is scientists were only recently able to use graphene for conduction ... I mean in the last few weeks. So where does friction lie?

As a participant in multiple national and international studies .... I value standardized testing, otherwise there is no baseline. Science is built on reproducibility ....

What did I learn ..... plain and simple ..... utilizing scientifically proven technology in my room had a more drastic effect to music reproduction since I can remember ....maybe Oreleo and the Phasure DAC.

Science .... you should try it some time .... it's fantastic  Happy

Kidding aside .... I'm now a proponent for room acoustics...


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