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
GENERAL UPDATE:

The acoustical space of my room especially with the creation of the "Golden Fingers" has modified completely the balance of the sound...

I eliminated 80% of my singing resonators, keeping only those that complement the absorption and diffusive effects of the Gold Fingers and the Twin Fans with resonators...

In the past my room was slightly too much reflective and now with this new balance the diffusive surfaces being more important, the sound is improved....

i has now 50 Golden fingers most of them 2 feet lava beads strings or tourmaline or 13 inches herkimer diamonds strings or chrysocolla beads....the materials composition if these stones dont play the prime role,  their working for diffusion of waves is the prime function....Except for Herkimer diamonds that are powerful resonators then act not only like diffusers but also resonators...

The S.Q, is so improved that i cannot say otherwise:

Acoustic is the portal of higher S.Q. generally and for most....Nearfield listening or regular position, in any small room...

My best....
UPGRADE on the Vibrations/resonance embeddings:

I have already something not perfect but good...

"Sandwiches" quartz feet on my desk, on top of it a granite plate, in between sorbothane, another granite plate, a cork plate, ad on top a bamboo plate....

This was vey good because the varieties of materials act together and complement each other in damping...

But it is not perfect, the cost was around 50 dollars for the 2 speakers.... And i was happy...

But when you miss something you are not always aware of which is missing...

I bought 8 chinese aluminium adjustable box with 6 springs in their cells...

I install it on top of my "sandwiches"....

Guess what?

An improved controls and a better clarity all around the frequencies spectrum....An improvement on my "sandwiches" that was immediately audible.... (careful to adjust the compression with the load )

But caution:

I adjust the springs compression, in function to the load to support, with some concrete slabs on top of my speakers (but you can adjust by putting less springs than 6 in each box)...I keep my sandwiches for 2 reasons: the speakers are on my desk and the 21/2 inches of the sandwiches height posit my speakers tweeters at the right height, and keeping more isolation from the desk is not a bad thing at all.....

The adjusting of the compression springs is VERY important to reach a good frequencies equilibrium....around 30 % compression for the eyes....


The price is 40 dollars postal fees included, same cost than my homemade "sandwiches"....Under 1 dollars for each spring calibrated in his own cell....(48 springs in the 2 boxes)
My rule is low cost and maximal audible effect, this product gives me that:

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

Are you using the skid pads?
Did you compare the sound, with and without?

I understand the "sandwiches" in your system;
did you evaluate the sound without them,
employing ONLY the foot pads, and possibly
varying the number of springs?

sgordon1

I immediately use the springs box with the 6 springs but modifying the load on the speakers, to adjust them.... Like i said i keep my "sandwiches" for the 2 reasons i explained...

Immediate improvement in clarity...

But without adjusting the compression around 30% can gives a result with too much inclination toward higher frequencies...It takes me 2 takes to reach the best and the best was the original load that was already on my speakers.... :)

For most people no need of a load on top of speakers at  all, keep the adjusting with calculating the right amount of springs in each box, be it 2, 3, 4 or 5 or 6...... It was more easy for me to keep my load to compress my sandwiches and the speakers....And to keep my tweeters anyway at the right height relative to my ears....

The boxes scream quality each spring in his aluminium cell are tightly adjusted...Ridiculous price.....

I did not evaluate the sound without my "sandwiches" because i dont wanted to disconnect my speakers , it would had been complicated, because i had many other things connected here and all is tightly packed near a wall corner    ...   :)

It takes me time to free the speakers acoustically from their bad location but i succeed.... It is an another story tough...

And under the springs the "sandwiches" cannot do harm on the contrary they separated my desk from the Speakers/springs system....

The spring system is very great buying no doubt....
I even just bought  another set for my amplifier few minutes ago...

The price at the adress i gives is unbeattable....

My best to you....
In my scale of S.Q. improvement increased by the way we control the embeddings,

The mechanical/vibrations/resonance embeddings is 25 % of final S.Q.

The noise floor of the house electrical grid embeddings is 35 % of the final S.Q.

The acoustical embeddings ,especially in small room, and even in nearfield listening contrary to a popular myth in audio threads, is the more impactful with 40 % of the final S.Q.




But an IMPORTANT remark :

No embeddings controls can gives all that there is to gives by itself and cannot replace the others embeddings controls at all....

If you want 100% of the possible S.Q. from your audio system you need to control ALL THREE EMBEDDINGS...

There is NO shortcut with one tweak or 2 tweak....It is better to create your own and adjust them to your own situation than buying generically created branded costly design...The price would be too high for me anyway and the results would not be better....if i had put my faith in commercial tweaks i would never have understood the concept and objects of the embeddings... And the problems would have been only partially posed...

--The mechanical embedding is relatively simple to take care of....There is many solutions, for now the "sandwiches" and the springs are my way....

--The electrical embedding is more difficult, i succeed with stones and crystals and especially with my "golden plates" which i am very proud of...

You can put a golden plate for example on your house’s main router, you cannot treat the router in particular or the external electrical meter of the house or a second electrical panel in a room, with an electronic solution devised to filters the line and very costly and NOISY because of their electronic parts....Without electronic components the "golden plates" dont introduce noise of their own coming from their parts....

--The acoustical embeddings is the more complex to take care of by far....Passive materials and active methods are mandatory here....I am very proud of my grid of different resonators all linked together to a grid of Schumann generators, and of my "golden fingers" particularly...."golden fingers" and my "twin fans" are sound diffusor device that are also partly connected resonators....Very powerful for peanuts costs...

In the passive acoustical treatment embeddings the key is the right balance for a specific room between absorption, reflection, and diffusion devices....For the active acoustical embeddings the active use of resonance and diffusion is key....

A method of listening experiments is NOT a tweak or a bunch of tweaks...Except for people unable to understand even simple problem.... Sorry....

i advise about a method not a product and the price is zero dollars for those who know how to read....

:)

By the way it is fun to play with experiments.... I just have a new idea for my acoustical embeddings few minutes ago then the sequel for the next days....

:)