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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
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mahgister OP
13,802 posts
 
I forgot to say in my excitement that my pipes are what i take from my basement in the state where they are...

For an optimal working i would be in the obligation to cut them to a very precise ratio of lenght as that in the fibonacci ratio....Which they are not now....

But i give you the idea...

It work amazingly good as it is with in eac case the longer being the sum of the other 2, i dont doubt that with the right ratio between all of them, they will do a greater  miracle in tuning the room...

I will add a third set of 2....My last three pipes with the same relation between them.....


to be continued soon..... 😊
mahgister's avatar
mahgister OP
13,802 posts
 
UPDATE: " Helmholtz-Fibonacci silent organ". 😎 My new room tuner set.. H.F.S.O.


A more precise ratio between pipes is of fundamental importance... A+B/A=A/B=1.618

2 inches less or 2 inches more on only one pipe alter the sound very greatly a very clear focus but with not enough meat on the tone bone so to speak with the 5 inches pipe, then i switch to the 7 unches with great improvement.... This third set is less well adjust toward the golden ratio tough....It work very well tough, i will adjust that in the weeks to come....



I add a third brick with a set of 23 inches and 14 inches and 7 inches....Not enough near the golden ratio but anyway, way more better than the previous 5 inches... The difference between 7 and 5 inches in this set was astounding.... 😊

The other 2 sets has their 3 lenght more near the golden ratio, this one not enough.... But anyway this third set work another level of refinement all across frequencies....

I locate it behind my head in my regular listening position....

This H.F.S.O. is my best best discovery with the "golden plates" and the modified Schuman Generators grid.....

Oufff what a day in music and audio.....

My best to all..... 👀
mahgister's avatar
mahgister OP
13,802 posts
 
UPDATE: H.F.S.O.

I almost woke up  my wife going in the basement in a hurry...

I sawed one of  the pipe of the third set to improve the set  by being near of the area of the golden ratio...

A good thing, listening the same files in a few second all was better, at the same times the sound was  more focussed in all frequencies but without loss this time in the "meat" around the " bone" of  each tone ....

Greater pipe: 23 inches 1/2, the second one near 14 inches, the last pipe around nine inches.... BINGO!.....

Third set completed and i go back to the music....

More to come....
mahgister's avatar
mahgister OP
13,802 posts
 
NEW ADDITION to my room controls devices:
                                                                         A second ionizer,



From China, low cost and very efficient... Low noise level and ozone emission tough this time, it is not the same design of the french silent, ozone-free Moskitoefree....But the french company is assailled by asking consumers and cannot deliver anymore in America...(Moskitoefree repell moskitoes,pull down viruses to the ground, and ionized the room for 100 bucks !) i was sad but,

BUT the  sound result are the same, and i put it where in my room the very low noise level is inaudible...the  silent Moskitoesfree is over my desk between the speakers....


The effect of the Chinese ionizer are the same than the Moskitoefree at least and perhaps more powerful because bigger battery, and 20% of his cost....Peanuts.... Design is aluminum and sturdy....



Audible effects are perfectly audible in high frequencies perception and on imaging.... No doudts at all.... It is not placebo.... I listened to test it some very difficult files ....

This addition of ionizer are amazing.... I cannot live without them now.....

In my 2 postions of listening the effect is the same in imaging, high frequencies and an impression of an increase in soudstage....For 20 bucks....

Dont trust the market, dont trust the reviewers, dont trust anyone save you ears and creativity...

Dont upgrade, embed it.....
mahgister's avatar
mahgister OP
13,802 posts
 
UPDATE to my new room controls devices:
A second ionizer,


I confirm the extraordinary effects on the better "timbre" perception by a liberation of the higher frequencies from their captivities in my room...

The Schumann generators grid did that to some degree, the French ionizer too, but this Chinese one is more powerful at least on par with them...

The files of lute i listen to now reach another level in the harmonic perception, and the silkier violin in Vivaldi resemble more of an addiction than ever....


In a word: an icing of the cake yes, but way more, because we never know what we are lacking in audio experience before experiencing it first.....
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