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Old 26th December 2012, 08:23 PM   #371
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Default Thank you dear Juan..about the coil i am in contact

with a doctor from sciences.... a scientist that works into laboratories...he will give me some return about my questions about.

regards,

Carlos
__________________
Dx Blame ST with a tube preamp. recorded with Xperia cell phone, https://www.youtube.com/watch?v=Qjs32J0gdj0; https://www.youtube.com/watch?v=nhrZ...vDnDhEpNv_XVxg
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Old 27th December 2012, 03:24 AM   #372
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Attention! I have only 3 more pair of the Dx Super A is some one interested please let me know vargasmongo@gmail.com.



Regards
Juan
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File Type: jpg 3.jpg (587.0 KB, 422 views)
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Old 27th December 2012, 07:09 AM   #373
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Default These boards will become rarities in a matter of weeks

I want the name of the last one to buy...he will be in the Dx Corporation history.

People making authopsy of the MKIII Hx made some people feel afraid of our brand dear Juan..... these boards (quantity) used to be sold in a couple of days....maximum of 2 days....so.... despite they had not the intention to do that, they did a lot of injuries on our amplifier's image.

Some guys.... a lot of them in actually, when listen that something is not fine with one model, or one particular construction, something someone build...and appearing something strange into the waveform (while clipping)... if they guy have not deep knowledge about what this represents in sonics (practice skilled guy that understand how much a perfect waveform is important or not) then they guy become scared... afraid that something is wrong there.

If the designer is a week person, then he give up and stop to work for the comunitty due to the injustice made (without the intention to harm...but negative things told about an unit really harms because people become afraid, scared about the unit..they say it is defective..that has a bug) then the amplifier is killed because a couple of guys that use the practice to search for microscopic bugs...and all amplifier has their weak points and small failures..anything is perfect in our analogic world.... but uncle charlie is persistent...i will be here from now to the ethernity...at least more 15 usefull years of my life... and i will be defending the unit, exploring the unit, selling the unit image, showing pictures, movies, sound samples and testimony of builders...then i gonna fix the whole stuff.

A pity is that one or two posts criticising a waveform that swings strange when clipping (not used level of power ..only transients goes there an IF you are listening high volume) kills the image of a brand that is several years in this forum.... thousand guys have assembled the brand in the whole world... a pity that a single negative thing can kill several positive things...very unfair the human mind related that.

I am sure these guys did that "in the name of science" alike youtube photonicinduction, but despite made that without the intention to harm...they have attacked the image creating a suspection that "something is not fine there".

Sadly was authopsy.... the amplifier was inspected after death....because when we inspect clipping, we are inspecting the amplifier OUTSIDE the normal use we give to them.... in the death range...when it is not more usefull...this was so crazy but people did that based into the premise that an amplifier that shows something strange while clipping is addicted to self destruction ...when was tested hard and have not self destructed...so... a fake premisse.

People, because of these guys, addicted to myth and things not really connected to the reality of music listening... making the authopsy put fear in our builders...they step back..and sadly...they are loosing the opportunity to listen the best amplifier ever made...much better than all others i have made..the ultimate unit that have killed, smashed and surpassed the Dx Blame ST and other excellent models.

Because fanatism, non sense behavior..... post morten (after death) doctors inspecting a dead unit..because clipping it is dead...dead for your use...dead as something usefull.

Or you know someone that listen distortion?....that drive amplifiers into distortion and feel this pleasant.... pure madness...obsession, disease.

This amplifier will be here, published for years long because great....and as soon as people forget that authopsy, then they will run to you Juan.... you gonna see this...people building and saying wonderfull things about the unit..then the ones are scared will run to you.

Be prepared to order 200 pcboards or more....this is guaranteed and i am writing here as a document that i will recall to prove you i am rigth..because this amplifier is really very good!

regards,

Carllos
__________________
Dx Blame ST with a tube preamp. recorded with Xperia cell phone, https://www.youtube.com/watch?v=Qjs32J0gdj0; https://www.youtube.com/watch?v=nhrZ...vDnDhEpNv_XVxg

Last edited by destroyer X; 27th December 2012 at 07:26 AM.
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Old 28th December 2012, 12:53 PM   #374
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I have this idea last night, I was stering at the heat sink for a while, and I notice that I can place a 18 AWG wire copper enameled wire into the heat sink as a hook so at the same time also will keep in place the BD139 VAS transistors, I apologize for my poor English, mister Carlos just happen to have another idea he will posted soon too, here is the video link.

Dx Super A Heat Sink ideas 2 - YouTube

Regards
Juan
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Old 28th December 2012, 01:22 PM   #375
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Default Very good Juan ... and here is a complementary idea

Please, post your video at thr MKIII Hx thread too.

Juan's idea complementary video - YouTube

regards,

Carlos
__________________
Dx Blame ST with a tube preamp. recorded with Xperia cell phone, https://www.youtube.com/watch?v=Qjs32J0gdj0; https://www.youtube.com/watch?v=nhrZ...vDnDhEpNv_XVxg
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Old 28th December 2012, 03:14 PM   #376
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I made this last night the Dx Super A BOM and images so you guys can have and idea what to get, I use DigiKey websites as reference, I personally used DigiKey because they deliver faster to Puerto Rico and shipping for me is lot cheaper too, you guys probably have the supplier of your preference too, I already order parts last night so I hope I can get those parts soon.


Regards
Juan
Attached Images
File Type: jpg Dx Super A top.jpg (879.1 KB, 360 views)
Attached Files
File Type: pdf Dx Super A components layout.pdf (53.5 KB, 152 views)
File Type: zip Dx Super A BOM.zip (21.9 KB, 125 views)

Last edited by vargasmongo3435; 28th December 2012 at 03:16 PM. Reason: grammar error
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Old 1st January 2013, 03:21 AM   #377
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Happy new year guys! weeeeeeeeeeeeeeeeeeeeeeeeeeuuuuu


Feliz año nuevo!!!!!!!!
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Old 1st January 2013, 06:43 AM   #378
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Default Thank you Juan.... i had great moments

I wish you all had passed great moments.

This new year, give a break to your ears....offer to your brain a real sonic sensation... listen a Dx amplifier.

Remember that the best pleasures of our life we have not to pay for them... this way is a Dx amplifier...you have not to pay for it...it is a real undisguised DIY for free project.

regards,

Carlos
Attached Images
File Type: jpg happy New Year.jpg (693.5 KB, 294 views)
File Type: jpg 003.JPG (916.0 KB, 258 views)
__________________
Dx Blame ST with a tube preamp. recorded with Xperia cell phone, https://www.youtube.com/watch?v=Qjs32J0gdj0; https://www.youtube.com/watch?v=nhrZ...vDnDhEpNv_XVxg

Last edited by destroyer X; 1st January 2013 at 06:57 AM.
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Old 2nd January 2013, 05:22 AM   #379
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Default Dx adjustable and stabilized power supply was made, mainly, to the Dx Super A

Because i am sure some guys (from Brasil is guaranteed) will increase the stand by current... then noises from the supply gonna appear, because class A drains a lot of energy from the supply, asking for a lot of capacitance...and this is expensive.... Dx Supply was made because of that, to give you the electronic filtering, the capacitance multiplier effect, to supress noises from the mains when you drain 300 watts of even more if you want.

It was posted separately but was a mistake, now moderators have moved and Solid State guys will not even know the supply exist, but i will publish in this thread and inside others Dx threads, as this is a complementary feature for the Dx Corporation series of amplifiers.

There's on set of boards free at Juan's home...last ones...these gonna be rarities in a matter of 15 years, after Dx death... i already have 62 years old...brazilian life spectance is more or less 70 years only.

regards,

Carlos
Attached Images
File Type: jpg Dx adjustable and stabilized power supply to the Dx Super A.jpg (765.7 KB, 204 views)
Attached Files
File Type: pdf Dx regulated supply.pdf (50.4 KB, 116 views)
File Type: pdf Dx Super A.pdf (55.4 KB, 130 views)
__________________
Dx Blame ST with a tube preamp. recorded with Xperia cell phone, https://www.youtube.com/watch?v=Qjs32J0gdj0; https://www.youtube.com/watch?v=nhrZ...vDnDhEpNv_XVxg

Last edited by destroyer X; 2nd January 2013 at 05:27 AM.
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Old 2nd January 2013, 07:12 PM   #380
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Default This kind of supply, series pass with error amplifier, is suggested

to use together a Dx Super A and all Dx amplifiers.

Naturally we have to change something if you enter with higher voltages then the 31 volts plus 31 volts AC i have entered...also my power limit, now a days, is 200 watts to each rail..total of 400 watts safe and 460 watts to each rail (unsafe) and 1020 watts to each rail (unsafe).

Datasheet from transistors used in the output said then can dissipate 230 watts each one of them (do you believe?)...i am considering a more conservative value of 100 watts each one of them.

Not only a Dx Supply can be used... any good series pass supply, having error amplifier, may fit.

Here you see a 3D virtual image... we are finishing the supply layout and it gonna be published here, because it was made to be used together the Dx Super A.

regards,

Carlos
Attached Images
File Type: jpg Dx Supply - a.jpg (414.2 KB, 79 views)
File Type: jpg Dx Supply - c.jpg (924.5 KB, 62 views)
File Type: jpg Dx Supply - b.jpg (901.4 KB, 55 views)
__________________
Dx Blame ST with a tube preamp. recorded with Xperia cell phone, https://www.youtube.com/watch?v=Qjs32J0gdj0; https://www.youtube.com/watch?v=nhrZ...vDnDhEpNv_XVxg
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