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Ultimate emotion core material ( types of silicon steel , Permalloy or Amorphous etc)

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#3
Base on my test, include Hearing test that I connect with many other audio equipment. If U like to keep it in a reasonable price, Hi-B was a good way, but if budget affordable, amorphous and permalloy was the best of choose. I made the tvc already and made with all three materials,
1. Hi-B 0.22mm silicon steel.
2. 0.1mm supermalloy
3. nano amorphous.


test result was interesting.
 
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#8
hi martin,

understood.

testing spec must be the main part for the test, but spec cannot to shew clear about the sound quality.

One by one I will share.

I would like to share the transformer volumn.

I did te test in three different cores, also combine with different wires, monocrystalline Copper and silver wire with both solid silver core lead out.
 
#10
geraldfryjr said:
Maybe some info in this thread can help you,

http://www.diyaudio.com/forums/tube...-radiometal-transformer-core.html#post3183269

jer 🙂
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heard all of them before, most of OPT was use silicon steel. But the sound feel quite grain ( with sandy feel) although tango top model. Tamura also good but sound with mechanical, compare with tango, tango musical feel better than tamura. Hashimoto use paper layered with better MF( Higher Vocal density) but little weak in the HF.

Then same winding method with amorphous core. It will face another problem, amorphous core magnetize and demagnetize very fast and the core characteristic was less HF core lose and serious LF core lost if comapre to silicon. That's way amorphous OPT feel lack of bass but techanical test was same henry (H) as the silicon. Amorphous listening feel was clear, clean and silent sound. But lack of Human voice emotion!

thx
 
#12
TVC said:
hello,

If I need to upload photos, am I must upload to internet first then copy the link to reply message, cannot directly upload to reply message? pls help!
Click to expand...

Like this,

To add a photo.

First click "go advanced" in the box below the "quick reply" message box. Doesn't matter if you decide half way through a message to do that, it carries it foward.

Then click "Manage attachements". Maximise the new Window so that you can see all the text.

Click browse in the first box at the top and find your picture. Repeat for any more pictures.
Click upload... a message appears "uploading"
When complete the files will show as being attached. Now click the small text that says "close this window"

The pictures should now be attached and when you submit your post they will appear.

Make sure your pics aren't too big, a couple of 100k is plenty, and many members object when they are massive and it alters the margins
It tells you in the attachments window what max sizes are allowed.


If you want to attach a file that has a non standard format for example excel, circuit simulation etc then try putting the files in a zipped folder and attaching that.
 
#13
hi Mooly,

thabnks a lot of it. BTW,

can U help me to edit the title

from

---The Best core material ( M6 silicon steel, ultra Hi-B, Permalloy, Amorphous etc)--
to

---Ultimate emotion core material ( types of silicon steel , Permalloy or Amorphous etc)--

so member said The best was too common word for message.

thx

TVC
 
#15
Well you have a basic problem.

The technically better core materials for HF are also not as good for LF, so one ends up giving up one side for the other.

Also a TVC (transformer volume control?) is not the best place to "test" for core materials.

One would need to keep as many factors constant as possible when making comparisons, otherwise what one thinks they are comparing may not be what is actually making the difference.

Certainly the use of the same wire, core size, window size, things like that ought to be as close as is reasonable.

It is critical to note to some degree of technical depth the precise parameters, measurements and construction methods for each transformer being compared and tested.

_-_-bear
 
#17
bear said:
Well you have a basic problem.

The technically better core materials for HF are also not as good for LF, so one ends up giving up one side for the other.

Also a TVC (transformer volume control?) is not the best place to "test" for core materials.

One would need to keep as many factors constant as possible when making comparisons, otherwise what one thinks they are comparing may not be what is actually making the difference.

Certainly the use of the same wire, core size, window size, things like that ought to be as close as is reasonable.

It is critical to note to some degree of technical depth the precise parameters, measurements and construction methods for each transformer being compared and tested.

_-_-bear
Click to expand...

Hi bear,

The technically better core materials for HF are also not as good for LF, so one ends up giving up one side for the other.
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yes, I knew, such as amorphous core, very good in HF, in same testing level data shew enough Henry, but sound feel lack of bass, If need to improve the bass in amorphous OPT. U need increase the no of Turns of the coil to had large henry, But same time, u need to face the phase shift, capacitance need to solve too. I means in same winding method, layered material and core size!
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Also a TVC (transformer volume control?) is not the best place to "test" for core materials.

So sorry because better core will had less core lose and less signal loss, Choose TVC for the best because I would like to know in small signal, same level in which core will be better, I also test in large size OPT SE and PP, will share later.
 
#18
[help=]%[/help]
DF96 said:
Would that really be an improvement?
Click to expand...

Hi DF96,

Not like to say its really be an improvment,

since winding method, layered material such as Nomex, telfon sheet in factory made can almost the same, final will effect the sound sense was core material.

the tube amp to compare was Kondo ongaku.

also interest I found the circuit in interest for this tube amp had little mistake.

when I open for it, one point to point to re-write and compare to the circuit in interent.

thx

TVC
 
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