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Old 21st July 2011, 06:45 PM   #221
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Default There's no audible effects, at least i cannot perceive them

I am suggesting other units because availability and price....you can use any transistor that has almost the same specifications compared to the ones i have suggested in the schematic.

regards,

Carlos
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Old 22nd July 2011, 12:14 PM   #222
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Default I am needing another pcb layout designer, despite i have Alex mm

that is already very good...but busy... very busy!

I am having two more foruns to feed with boards, and i want now a different kind of layout as these two foruns (SMPS and diyaudio) are using the same layout....i want a different style...your style man!

Also i want another option, a Mini Hx, or "The son of Hx" to offer.... the same amplifier having only two output transistor, a single pair..and without room for "L" shape bracket to have it small and cheap.

Please, present your layout here, or contact uncle charlie using email adress:

nanabrother@hotmail.com

It is a non profit movement.... the same i use to do all these years..no one will receive any kind of payment or advantage..no boards as gift, anything..just our gratitude, the forum respect, the forum appreciation on you and your inclusion in the hall of fame from the Dx Corporation, second stage, main headquarters..with your picture surrounded by golden frame.

I have a demand...i want your board tested...if accepted, then must be tested prior to me to order and distribute...you must produce it, sample, and build, or must send me to me to build and test it... then we will start group buy using your gerbers (must provide them).

Also provide me all files from your software that can be different than Eagle...files you have used to produce your layout and to export files as Gerbers.

I want your authorization to use it for free, in wide world foruns.... without profit to anyone of us....no advantage to me, nor for you and not for the group buy manager... a free service for the audiophile community.

- "Join the Corporation where you have the good ones to be one of us!"

We are reaching 100 boards ordered...so...it is a sucessfull enterprise and i want you to join us.

http://www.youtube.com/watch?v=ujzSR6iL3Hk

regards,

Carlos
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Last edited by destroyer X; 22nd July 2011 at 12:18 PM.
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Old 22nd July 2011, 03:24 PM   #223
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Default About pcboards.... i am nedding one more (at least) designer

‪About circuit boards‬‏ - YouTube

regards,

Carlos
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Old 22nd July 2011, 08:46 PM   #224
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Default Already have a friend doing something about new pcboards

His name is secret for a while.

I am glad he is trying to cooperate with our Corporation, once again.

regards,

Carlos
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File Type: jpg Dutch board in development.jpg (701.4 KB, 361 views)
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Old 23rd July 2011, 06:07 AM   #225
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Quote:
Originally Posted by destroyer X View Post
This helped me to compare amplifiers while using the same supply...the same range of power.

And i am showing you the schematic... basically the same amplifier... some parts replaced for tuning purposes and some parts are different because availability of these parts in my junk box.

It is not an amplifier released...it is just a curiosity for you.... i had fun producing smaller boards and using only two pairs in the output... it is sounding great..the same sound i have to the MKIII-Hx..... a little bit more high end because the smaller capacitor in the VAS....hehehe.... this made a lot of difference... VAS is the most important stage.... the most important tuning is made there.

The MKIII-Hx is already faster and have much more dinamics compared to the Supercharged MKII and the Dx Blame ST.... so....i found was unfair to compare them... would be a slaughter (heheheh)... then i decide to make them same power...same supply...this would result a more fair comparison.... sadly my camera is not able to register high frequencies..and there's the main difference between them:

‪Hx and St, a comparison‬‏ - YouTube

regards,

Carlos
Attached Images
File Type: jpg MKIII-HX 3D.jpg (331.8 KB, 316 views)
File Type: jpg MKIII-HX 3Da.jpg (273.5 KB, 291 views)
File Type: jpg MKIII-HX 3Db.jpg (347.4 KB, 289 views)
Attached Files
File Type: pdf TOP VIEW.pdf (55.2 KB, 108 views)
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Old 23rd July 2011, 09:37 AM   #226
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Default I will decide what design to use in November

I do think i may use two or three different layout...i do like yours...send me gerber files in order to me to check layers... also i want more layouts....only silk screen in pdf, copper tracks in pdf and both combined, as a ray x view..silk screen and parts located upper the board and copper tracks that we can see if the board was transparent and made by glass..... will be needed also image in pdf, informing board dimension, in black and white...one with copper tracks in black to hot iron image transference made at home...and another with copper tracks in Black, in order to people use the photographic method to make image transference to a copper board covered by photo sensitive chemical material.

In advance to check, i will ask you please, dear Tayag, to check this with a lot of care...then i will check once again...it is normal, common for us humans, to make mistakes.

I do like your board layout.... i do appreciate how it looks....but i need more data... dimensions and details.... i have to inspect pads and copper thickness and distance in between copper tracks...distance from input to output and if some part may couple magnetically.

As i told folks in the video... i want this board produced as soon it receive approval, so, you may be able to do it, to assemble it by yourself for testing purposes and i will instruct you what kind of testing to perform... also that board can be shipped to my home and i can do that by myself if you want...not needed me to do... you can do that.

Inductances and capacitances present in a pcboard are too much complex to go imagining or calculating..we have to assemble to be sure the unit will not oscilate.... the only way we have to be sure is building..there's no other way.

We have two international diy foruns selling boards by cost price... i will let them exaust.... will be waiting them to finish, to manufacture boards, to ship to diy for free customer, will be waiting them to assemble, will give them follow up..and then i will think about to start in other foruns other group buys, using boards provided by diyaudio members....of course we can open group buy here for these new board layout designs...but only after the group buys that are running finish their job....many monthes to come.

Thank you very much Joel Tayag (drowranger)

Do not post gerbers here... pirates may use to produce boards and sell them in Ebay... they already have old gerbers from old amplifiers and they are still having fun..let them busy with old amplifiers... and this new one will be explored in our foruns.

I am posting your picture because you look good.... Dx Corporation members usually looks good..exception is the chairman..ahahahahaha

regards,

Carlos
Attached Images
File Type: jpg Joel Tayag.jpg (21.1 KB, 250 views)
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Last edited by destroyer X; 23rd July 2011 at 09:43 AM.
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Old 23rd July 2011, 09:52 AM   #227
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Default check this one

Quote:
Originally Posted by destroyer X View Post
I do think i may use two or three different layout...i do like yours...send me gerber files in order to me to check layers... also i want more layouts....only silk screen in pdf, copper tracks in pdf and both combined, as a ray x view..silk screen and parts located upper the board and copper tracks that we can see if the board was transparent and made by glass..... will be needed also image in pdf, informing board dimension, in black and white...one with copper tracks in black to hot iron image transference made at home...and another with copper tracks in Black, in order to people use the photographic method to make image transference to a copper board covered by photo sensitive chemical material.

In advance to check, i will ask you please, dear Tayag, to check this with a lot of care...then i will check once again...it is normal, common for us humans, to make mistakes.

I do like your board layout.... i do appreciate how it looks....but i need more data... dimensions and details.... i have to inspect pads and copper thickness and distance in between copper tracks...distance from input to output and if some part may couple magnetically.

As i told folks in the video... i want this board produced as soon it receive approval, so, you may be able to do it, to assemble it by yourself for testing purposes and i will instruct you what kind of testing to perform... also that board can be shipped to my home and i can do that by myself if you want...not needed me to do... you can do that.

Inductances and capacitances present in a pcboard are too much complex to go imagining or calculating..we have to assemble to be sure the unit will not oscilate.... the only way we have to be sure is building..there's no other way.

We have two international diy foruns selling boards by cost price... i will let them exaust.... will be waiting them to finish, to manufacture boards, to ship to diy for free customer, will be waiting them to assemble, will give them follow up..and then i will think about to start in other foruns other group buys, using boards provided by diyaudio members....of course we can open group buy here for these new board layout designs...but only after the group buys that are running finish their job....many monthes to come.

Thank you very much Joel Tayag (drowranger)

Do not post gerbers here... pirates may use to produce boards and sell them in Ebay... they already have old gerbers from old amplifiers and they are still having fun..let them busy with old amplifiers... and this new one will be explored in our foruns.

I am posting your picture because you look good.... Dx Corporation members usually looks good..exception is the chairman..ahahahahaha

regards,

Carlos
Attached Files
File Type: pdf top view.pdf (79.7 KB, 113 views)
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Old 23rd July 2011, 10:38 AM   #228
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Default Interconnect your ground tracks in order to avoid us

To run wires....search for Alexandru's ground style and copy the style please.

There's a lot of run to develop your boards.....better vertical and horizontal alignment can be made....a more organized arrangements to components....alike soldiers in a parade, they go aligned vertical and horizontal.

I know you are still learning the stuff....a very good starting job you have done...then go ahea.

regards,

Carlos
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Old 23rd July 2011, 10:54 AM   #229
alex mm is offline alex mm  Romania
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..... revised layout and silk screen
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File Type: jpg DX MK III HX.jpg (598.5 KB, 135 views)
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File Type: pdf DX MK III HX.pdf (144.3 KB, 161 views)
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Old 23rd July 2011, 11:10 AM   #230
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Default It has a mistake dear Alexandru...that 330 ohms resistance should

connect to the negative rail instead to be connected to ground...i have sent you a video explaining this...want me to post the video?

Please my dear...fix that as soon as you can as Meanman is waiting these files to order manufacturer to produce boards.

I am very sorry my first video had audio narrative saying to put it to ground...was my mistake...i do mistakes too...this is not your privilege...everybody does mistakes... then i made a yellow text superimposed to the video saying i was wrong.... saying the 330 resistance should go to the negative rail line...after diodes...the input circuitry negative rail line.

Image attached.... yes...if you need you can connect to the 4.7ohms resistance too, as it goes to negative and we can use it too (in an emergency, to make things faster and easy to you)

Can be alike meanman did...the colour image attached.

regards,

Carlos
Attached Images
File Type: jpg Connect 330 ohms to negative rail.jpg (154.6 KB, 136 views)
File Type: jpg Correct circuit.jpg (96.0 KB, 91 views)
File Type: jpg Can be this way too..if more easy to make modificatins.jpg (212.3 KB, 89 views)
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Last edited by destroyer X; 23rd July 2011 at 11:25 AM.
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