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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...
128x128mahgister
mahgister's avatar
mahgister OP
13,194 posts
 
Anyway, I am looking forward to realize more of your solutions that you generously publish here, mahgister.
This is a journal of my journey...

But concentrate yourself on these important one:

The golden plates,
The shumann generator grid,
The spring method for isolation but the suspension is probably better then this one is done....
The Helmholtz mechanical equalizer....The most impactful....
mahgister's avatar
mahgister OP
13,194 posts
 
Actually, there is a commercial solution called swing bases by Swiss loudspeaker manufacturer Sven Boenicke, however it comes at a price.
Very innovative.... i did not see any price tough.... ?

I must say that my dissymetrically compressed 2 sets of springs under two different load  for each speaker give me some of these system flexibility at 100 bucks.... Then i will stick with it....

 
b_mueller
45 posts
 
Thank you for the guidance and encouragement, mahgister! 
I will next start with Helmholtz resonators. The golden plates are on the way, and I habe one SG so far. 
I think the swing base is around 1200 Euro.

mahgister's avatar
mahgister OP
13,194 posts
 
A SIMPLE EXPERIMENT DESIGNED TO AWAKE ACOUSTIC CONSCIOUSNESS



This experiment will not necessarily increase the quality of your audio experience or decrease it....The positive or negative impact is imprevisible for me because it is relative to your particular gear interaction with your room/ears....

This experiment will be audible with NO work to implement it...This is the reason why i propose it, there is NOTHING to do....

This is very simple and only suggested to you to make you listen what is the power of a single object can have on sound quality in a small room...

Take a big cylinder of any materials, 3 inches diameter and at least 2 feet high.... Put it at the reflection point to your right or left near the wall and listen...

This is only a primitive Helmholtz resonator without a neck....

This will give you an "idea" of how powerful and precise a mechanical equalizer could be when it is fine tuned...

Report the result....

And remark that all my results are gained with no money investment or very low one...

My goal is : audiophile experience at no cost with basic common sense and listenings experiments....


mahgister's avatar
mahgister OP
13,194 posts
 
It seems that to place a tube of any kind and any lenght in a room to try a simple experiment in acoustic, the simplest possible experiment is too hard for most !

Or nobody read this thread....

The second alternative is probable....


😊
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