Miracles in Audio, by luck, by good choices,by design or by tweaking...

UPDATE:

THE HELMHOLTZ MECHANICAL EQUALIZER


Just a remark i forget to make about the H.M.E.

The location of the tubes and pipes in the room cannot be anywhere...

For an optimized result i placed myself for example a bunch of them to my right and another bunch to my left on the first reflective point/surface near the wall....

Another bunch with the bigger one 8 feet high are behind my listening position ...

Roughly like a triangle formation in my room...

I tested that by moving only 3 pipes of these 24 pipes from a position near one speaker but not facing the direct wave of the speaker... The result : the decrease of the imaging was immediately audible...

I replaced it to my right with another bunch already there, near the first reflection point/surface.... Result: better imaging....Better mid-frequencies...

Thank you for your detailed answer, Mahgister!
I understood about meteorites, more or less know about how iron behaves in acoustics.

Imagine you want to upgrade a very good speakers in a very well controlled room and you cannot listen to the new speakers before purchasing them ? If my S.Q. was not so good it will not be a problem but now buying what? And which branded name product will be truly better and at what price?

Sympathize with you, this is an unsolvable question, definitely. Everything in audio should be tried before buying, and expensive things even more so.

The key to audio is ACOUSTIC.... all the rest all my other devices were very useful but not on the same transforming level..

Acoustics are primary, that's a fact, but electronics can also be a bottleneck if you don't pay attention to them. In no way do I want to impose anything, but you have a well-honed perception, I just wonder how the wires will be heard in your system. If you have free time, just turn the plug in the socket of the amplifier or CD player and evaluate the result. May be some simple manipulations with cables will help you forget about acoustics upgrade for a while.

Acoustics are primary, that’s a fact, but electronics can also be a bottleneck if you don’t pay attention to them.

For sure you are right...

But my point is related to the fact that it is very easy to buy a good audio system at low price.... By easy i means if we read like i did for over hundreds and hundreds  of hours carefully... But anyway it is the easy part... 😊

All the working embeddings we must do and figure out is the hard part of this hobby...

The acoustic is the most consuming time controls to install rightfully and i figure out myself that passive material treatment sometimes is not enough...

With the mechanical equalizer tuning almost complete, i am done...

Some other imprevisible improvements tecnique or devices for sure exist which i never think of, but my S.Q. is satisfying completely....Or almost....Then i am done with my listening experiments and i am even more in non critical music listening...

Imagine i just look for Chostakovitch symphonies directed by his son.... I will enjoy them in the late nights to come....

My best to you....

SECOND UPDATE:

THE HELMHOLTZ MECHANICAL EQUALIZER or H.M.E.

I can describe my H.M.E. like a SNAKE which has his HEAD (2 thin straws of different size) one inches 1/2 near the tweeter of my left speakers. The TAIL is 2 inches away from the bass diver of the right speaker (2 pipes one is a very big straw with a neck made with a very thinner one and the other a metal tubes 2 feet high with a 1/4 inch diameter) To these 2 pipes at the right speaker bass driver, i added yesterday a bigger, tube 15 inches high, made of toilet paper cardboard rolls 😁, closed with plastic sheet, with a neck 5 inch long and with the thinner possible straw diameter for his neck...

In my room,the other 2 set of 6 pipes and tubes of various size,diameter and necks are located at the first reflection points to my right and left, the last 7 one are behind me with the biggest one, 8 feet high....

My H.M.E. grid is a snake which has a head, a tail and a body, each part with different pressure zone damping and enhancing his own set of frequencies...The body enhance room wavefronts, the head and tail enhance speaker wavefronts....This is the CORE of my idea....

The dissymetric position of the head and tails in relation with the tweeter from one speaker and the bass driver of the other speakers is the SECRET MAGICAL component of my H.M.E. snake grid, the first wave front of sound coming from one speaker and the other one coming from the other speaker gives to EACH ear a different cue, these different cues made the brain more apt to recreate a third holograhic sound encompassing completely the listener....

I was inspired by the last research of  three Japanese acoustician in 2008 analysing the way the brain act in different timing tresholds between the direct early and late wavefronts...Reading it give me the idea on the spot.... My idea is my own application of their analysis and is not in the paper.... I am very proud of that invention so to speak.....😊

The addition of this last cardboard tube was the "cherry on the cake", and was no short of spectacular on ALL count of acoustic features....I was sure few days ago that nothing was missing but i was not right...I listened yesterday to some small negative resonance at some mid frequencies in my best harpsichord file, unnoticed till now... I decide to act and i win the bet on the spot!

It was a so great improvement that i cannot believe it myself...

I listen to a very well known files of Bach Golberg variations, by Fretwork ensemble.... Incredibly i listened to them for the first time being there with them in the studio....The "listener envelopment" acoustical experience was more striking than ever at a maximum possible level this time....The timbre of wood instruments in my Brandenburg concertos were also more accurate and distinctive....

I was flabbergasted because i have written here few posts ago that the experiment with H.M.E. was closed.....

It seems something was lacking all along  that i did not perceive in only few hours of listenings , it takes days....

I cannot imagine any real change of this level to come from my H.M.E. for the future....But i will not bet on that anymore now... 😁😊😎

My audio quest is terminate that is for sure.....No upgrading will interest me ever now.....It is way better to create sound with "paper toilet rolls " than buying the illusion with a very costly system....

I know that most cannot believe what i spoke about here but it is my journey and i wish to be useful to some....

Trust yourself, and create without after tought....After the heart the ear is the greatest master....







Addendum:
Like usual all improvements are there on regular position or in nearfield position similarly but differently....

Imagine i just look for Chostakovitch symphonies directed by his son.... I will enjoy them in the late nights to come....

I have often heard that his son performs his father's things better than others. I myself do not really like Shostakovich's symphonic music, the very heavy music to me and the natural sound of the orchestras in the recording leave much to be desired.

I love his early chamber works, where he plays the piano himself. Brilliant Trio Op. 67 - https://www.youtube.com/watch?v=IUorALVwVHA. The cello flageolets at the beginning are just a kind of a mystery. And how eloquently does Oistrakh violin speak!