stax mafia electrostatic portable

[Kerry]

I had to pause this project for a bit, but I'm picking it back up now.

I've had issues with some of the batteries I've been testing.  I'm going to try and get a clean set and test with my current 3S balancer as well as a stock (ebay) 3S battery protection circuit.

[Kung]

I saw a portable estat amplifier on a Chinese e-commerce platform and it looks very similar to kevin's amplifier, Is this the commercial version ? 

 

 

[kevin gilmore]

nope, not mine but may be close. 

definitely want more information.

[Kung]

Here are more pictures of PCBs that may be an early version. They look identical in terms of layout. 

 

[kevin gilmore]

that looks very close to my design. no surprise i guess.

 

[HVRV]

KUNG  Who r u？

Why copy my picture to this forum?

[joehpj]

Why not?

[HVRV]

57 minutes ago, joehpj said:

何乐而不为？

Because in my Country there is no good business model only destroyed each other

[nopants]

Can't tell if you're justifying stealing the design or getting mad that you got exposed, maybe it's both

[JoaMat]

5 hours ago, HS918 said:

Because in my Country there is no good business model only destroyed each other

Vilket land är det?

¿Qué país es?

Which country is it?

是哪个国家?

[JoaMat]

By the way...

I have been made aware of that the mini T2 is marketed by a company unknown to me. They want $ 7,000 for it. It is an example of a villain's business model.

 

 

 

Edited January 12, 2022 by JoaMat

[HVRV]

15 hours ago, nopants said:

Can't tell if you're justifying stealing the design or getting mad that you got exposed, maybe it's both

NOT decoding from power DAC to amplifier is completely my design😑

10 hours ago, JoaMat said:

Vilket land är det?

是哪个国家？

是哪个国家？

是哪个国家?

CN 中国

[HVRV]

10 hours ago, JoaMat said:

The fact is that my  estat amplifier expects sales prices for a $ 400 for only $ 400 for CNC processing and other costs. The price is quite low.

 

[HVRV]

This is the latest design might look similar to Stax-D10 but the fact is different.

[HVRV]

Kevin Gilmore also said that Stax D10 is a D class amplifier, I design a Class A amplifier expects to have better sounds. I hope so that🤔

[JoaMat]

@HVRV  Please,

Never ever make any changes within a quote. I urge you to make appropriate changes in your earlier posts.

[HVRV]

8 minutes ago, JoaMat said:

@HVRV  Please,

Never ever make any changes within a quote. I urge you to make appropriate changes in your earlier posts.

My English level is limited, I don't understand what you mean, do you say not to change the price? Always keep the price of $ 400?

[kevin gilmore]

1 hour ago, HVRV said:

Kevin Gilmore also said that Stax D10 is a D class amplifier, I design a Class A amplifier expects to have better sounds. I hope so that🤔

Absolutely not. Stax D10 uses apex high voltage opamps and is class a/B with limited voltage swing.

other amplifiers out there use class D amp driving transformers. birgir has a couple of them. they suck.

If your amplifier is indeed $400 then i want to buy one NOW. Since the design is virtually identical to my design there is no reason for me to build one when i can buy yours.

[chinsettawong]

I’ll buy one now too.  

[JoaMat]

@HVRV,

When you quote someone’s post it will appear in your post marked with the members name and time of the post in its own “window”. In that window you can’t make any changes.

You have quoted me and written something I haven’t said. I don’t like that.

[HVRV]

1 hour ago, kevin gilmore said:

Absolutely not. Stax D10 uses apex high voltage opamps and is class a/B with limited voltage swing.

other amplifiers out there use class D amp driving transformers. birgir has a couple of them. they suck.

If your amplifier is indeed $400 then i want to buy one NOW. Since the design is virtually identical to my design there is no reason for me to build one when i can buy yours.

In my country. A representing the formation is the push-pull design and D represents digital circuits such as op amp.

In addition, I don't know how to mail my product to other countries. If you have a better way I am willing to provide my products after the Chinese New Year's Day

I can determine that my product does not contain taxes and freights, stabilizing in $ 400👐

47 minutes ago, JoaMat said:

@HVRV,

When you quote someone’s post it will appear in your post marked with the members name and time of the post in its own “window”. In that window you can’t make any changes.

You have quoted me and written something I haven’t said. I don’t like that.

 Ok, I will pay attention to this problem.

[judo]

In any country who thinks opamp is a digital circuit can not steal anybody's design. You could be the merchant. If so, I am going to buy an amp from you too.

[HVRV]

13 minutes ago, judo said:

In any country who thinks opamp is a digital circuit can not steal anybody's design. You could be the merchant. If so, I am going to buy an amp from you too.

If you want to buy my amp I suggest you better find a Chinese friend to help you buy

[judo]

3 minutes ago, HVRV said:

If you want to buy my amp I suggest you better find a Chinese friend to help you buy

So China is the country, what a surprise...

[kevin gilmore]

here is my original schematic from january 2021. there are minor changes in the production version. Might as well let everyone steal it.

 

electrostatportable.pdf