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

I owned a low cost headphone for many years, the Fostex TH7B, first version( a new one close version exist Fostex TH7BK), semi-open headphone...I was never completely satisfied by any headphones I ever owned: Hifiman 400, Stax basic lamda, Stax 5 gold,Akg 340,Akg 701, beyerdynamic 990, and T150... Because in each of them with all their qualities I never listen to at the same times, a confortable headphone with natural timbre and voicing, with a good imaging and a realistic soundstage(not too close to my ears)...


For the last days I tweaked this Fostex, to damp his internal resonance I used sorbothane, I put some shungite stones at the exterior part of the cups and I use some Herkimer diamond in the interior pads( 3 at 120 degree) … Now this low cost headphones crush all my others if I sum all his qualities... For example his mids and voicing cannot beat the AKG 340 but among all my other headphones it is the best that is near that mids and it is more confortable, and with longer cable than the 340...His imaging is better and more realistic than the 340 etc etc...It is the same if I compare with the others...


His most important qualities is natural timbre and clear imaging,very precise pinned point accuracy and natural, so clear it crush for that ALL the others to dust...In the French audio circle the reviews were more than very positive few years ago...Diapason d’or and choc Classica...I am not the only one impressed buy the ratio quality/price... But remember that thesae reviewers dont tweak their headphone...The difference between before and after the tweaks are staggering...


Yes Miracles happens in Audio: cost is under 100 American dollars... Few years ago they cost me 50 bucks new... I never dreamed that I will go back to headphones...


I will enjoy your miracles stories of any kind ….My best to all...
mahgister
mahgister's avatar
mahgister OP
13,679 posts
 
Update

"Twin fans combing sound room enhancer"


My friends audio experiments are very instructive, and sometimes amazing, bordering to  the incredible...

In a room  where many active controls device are already in place,  for example in mine, many "grids of cones bells", the "bell of bells",   Schumann generators grid, helmholtz bottles, etc In this kind of room 2 simple bands of copper tape 8 inches each long, wrapped around the   cone bells grid  in the center of the fans enclosure (12 cones 2 big and 10 small one all with herkimer diamonds in center) will make an enormous difference....

I wrapped the copper tape in first experiment, around all the cones grid in the center enclosure of each fan including the 2 big cones....

In a second experiments i only wrapped around the little 10 cones without  including the 2 big one....

Results: the second experiments gives a better results  but the difference that  two 8 inches long  wrapping tape around some cones  can produce  if wrapped around some cones and not around some others are staggering....

ACOUSTIC  dictate the ultimate S.Q. more than electronic design in most cases.....  

Thats all....
mahgister's avatar
mahgister OP
13,679 posts
 
I think the waves of direct sound and refracted sound in a room are an extension of the ears/brain, the waves of sound in the room are like an extension of the ears sensing organs and linked to the working creative interpretation of the music by the brain...( the imaging of the music scenery for example is a reconstruction by the brain linked to the" perceived" acoustical room like in echolocation )

The cones bells grids wrapped with copper tape on my wall, on the fans enclosures centers, on my speakers, on my computers screens, are like passive and stable beacons and tags located all along the fixed banks of a flowing river ( with different waves of sound conflicting with each others)... The ears/brain use these beacons to recreate the music image that is flowing with the waves...

But for sure the cones bells of different size are also tiny resonators, like the herkimer diamond (H.D. ) in their center, and their diameter, their composition materials, even the dimension of the H. D. all that play also a big role and they change the relation between direct sound wave and refracted sound waves .... They are not only passive beacons then, but also active players in the acoustical field....

I am not a scientist this is just metaphors to convey my experience....

:)

One thing is for sure, acoustics is not a simpler science than electronic design science at all....
mahgister's avatar
mahgister OP
13,679 posts
 
You dont know how fantastic your audio system really is...

I was like that....

It takes me the last 2 years to know that...

Most will read that like if was boasting about my system.... Not at all...

My system is low or mid-fi at most, very well chosen but not High End ...

I dont want to boast about brand names, for me it is illusory, there exist many, many good brand, with their weaker points and stronger one...

The question is:  HOW DO YOU HAVE EMBEDDED IT ?

Think about that, especially newcomers, not brainwashed by the upgrading motto.....

I am really happy....I wish the  same for all.....

:)
mahgister's avatar
mahgister OP
13,679 posts
 
My new active controls method for room acoustic
is a continuation of my "twin fans combing sound room enhancer"....

I will not speak in details about it for the moment....
Many new readers will think i am crazy, after many past readers think that already anyway...

I will describe it later for sure, i dont fear other’s opinion....

But even for me it is difficult to imagine that change and how it works....

If so, acoustic is not what acousticians think it is, It is way more than they think....

One thing is sure my adio system increase in S.Q. another notch today...

It is very easy to verify for me, it takes almost a minute of listening.... I verified after this first amazing minute for many hours with many files i know perfectly well and files which i know how they are supposed to sound in my room....

i am amazed ....

Acoustic active devices are almost half of my S. Q. now...

The rest is passive treatment of the room, + the 2 other embeddings...

I will post photos in the near future to describe my "twin fans" modifications....

I am too old to start a career in acoustical audio.... :)

Alas!

But i can treat myself at least.....

Enjoy music....

«Life is shorter than the long dying breath of a dragon .»-Groucho Marx


mahgister's avatar
mahgister OP
13,679 posts
 
UPDATE:

My new active controls method for room acoustic
is a continuation of my "twin fans combing sound room enhancer"....


I am not a scientist at all....
Only an ordinary guy who listen carefully with "ordinary" hearing capacity for my age , but with learned hearing abilities over the mean population, being a lover of music and an audiophile for the last 7 years, and consciously so for the last 2 years....

My last experiment is so successful that i discover truly amazing facts...

In a word, i connect with very thin phone cable the 2 twin fans, with their cones grids of 2 different size on the enclosure with Herkimer diamond at their center...

After connecting the 2 twin fans and the 2 size of cones bells on them with cables, i connected the 2 twins fans cones bells grids to 2 Schumann generators, themselves connected all around my room to the other 8 one....

The upgrading S.Q. was an increase of all factors and aspect of sound qualities...

I am flabbergasted indeed...

Now what this means?

This means that PASSIVE room acoustical controls has some limitations to correct the room , especially irregular and small room...

ACTIVE acousticals controls are revolutionary in S. Q. terms ...

The human ears not only read direct and indirect sound coming from the speakers and the room, but we can use some connected active resonators to help the ears/brain to free themselves from the limitations of the room itself...

The ears/brain not only PASSIVELY READ the room but can ACTIVELY TRANSLATE the limitations of the room and transmutating them in some other space totally....

Wow! i will repeat that:

The ears/brain not only PASSIVELY READ the room but can ACTIVELY TRANSLATE the limitations of the room and transmutating them in some other space totally....




This is my last discovery.....

More to discover