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


These are great on top of components and shelves, and on transformers. They come fully assembled, too.
Great value.

https://www.aliexpress.com/item/1005001302651100.html?spm=a2g0s.9042311.0.0.7f7f4c4dgrVxHm

So these go under components to support them or loose on top?  Any idea what weight they support under a component?  I can understand the isolating effect underneath but what do they do if placed on top?
These are great on top of components and shelves, and on transformers. They come fully assembled, too.
Great value.

https://www.aliexpress.com/item/1005001302651100.html?spm=a2g0s.9042311.0.0.7f7f4c4dgrVxHm
They are very good and cost nothing.... I bought them and the results are amazing...

BUT the adjustment by ears takes few days, and must be finetune with a load (this is more precise than taking off springs if you can). The fine tuning of the load must be around 1and 2 % of the compressing load...They must be highly compressed, with the speakers i place on them around 80 pounds.... 

You must listen to TIMBRE to adjust them optimally not towards high frequencies or bass one, but toward natural timbre....Too much high means they aure not enough compressed, too much bass they are too much compressed....The right compression will be audible with 1 or 2 pounds variation of load near their optimum.... And the timbre will be at his best.... 
So these go under components to support them or loose on top?  Any idea what weight they support under a component?  I can understand the isolating effect underneath but what do they do if placed on top?
You put them UNDER speakers...What i know is in my last post...

I cannot  gives more measure numbers only approximation because i use my ears for adjustment...

My best to you....
@sgordon1 says he puts them on top of components. Why?
I dont know  except if he use some springs only for tuned mass damping...