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Old 21st September 2013, 06:42 AM   #11
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Hello guys I'm about to go bed here in Puerto Rico is 1:38 am jejejeje please use this e-mail
vargasmongo@yahoo.com
send me your full address and how many boards you want I be happy to help the best I can

Regards
Juan
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Old 21st September 2013, 09:55 AM   #12
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Dx Super A
Dx Regulator
What is the Dx Super A?
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Regards Åke
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Old 21st September 2013, 10:57 AM   #13
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Default It is a very long story or history...and all already explained

till the exaustion in this thread:

Dx Blame ST together Dx Super A

And also in this one that is complementary, because it is the Dx Supply:

Dx Supply, output adjustable, stabilized power supply

It is not the Super A from JVC, it is the Dx Super A, a simplified circuit that increases bias in the stand by mode and return to class AB when you increase the volume..then.... after you increase the volume, the amplifier operated in class AB alike andy Blameless style audio power amplifier...where the bias is provided by the audio signal...the whole story, the evolution, the upgrade and update is in these threads you can read if you want.

To explain in details i would have to write the thread once again...and this was already made...so, if you are really interested, then you will spend some time watching, reading, studying and evaluating.

Two group buys already closed in Brasil have distributed hundreds of kits of pcboard and also kits including parts (Brazil only)

Juan was distributing pcboards from the first layout and already finished too.

Impressive you have not the knowledge...so long time the stuff was published here..so many videos about...so many guys assembling....maybe you where in other forum or in a country without internet, travelling for research, holidays or work.

I will post some videos..but there are 12 foruns with this material all over the world....there' a man in Siberia listening this amplifier..another in Bali...other in Alaska.

If you imagine to find Super A from JVC.then do not go ahead...this is a different simplified style...a Dx Super A...not a Super A.

Here you have the start.... everything was modified..the Gradiente circuit was not easy, nor stable, not cheap.... was abandoned..... i leave it to make something more simple that can produce the same "effect" in aound reproduction with less heat...also my circuit is not a non swithing amplifier..it is a higher bias Class AB amplifier only... an you can easy return to the normal operation (class AB), with standard biasing the whole world uses, just moving thebias adjustment trimpot to one end... some videos in Portuguese, others have Portuguese and Englsih narrative...others only English, all depends to the forum i was writting to... well.. audio electronics is audio electronics is the same in every language..i am able to understand electronics in any language and i am not more clever than you are...so...you can understand too if ou want it:

http://www.youtube.com/watch?v=FJyPfaxXGqs
http://www.youtube.com/watch?v=KNfqk9Zxino
http://www.youtube.com/watch?v=ZN8H97jGtu4
http://www.youtube.com/watch?v=IH7evPgBGo8
http://www.youtube.com/watch?v=7leZbQ8Ebsk

Much more to come.

regards,

Carlos
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Last edited by destroyer X; 21st September 2013 at 11:05 AM.
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Old 21st September 2013, 11:03 AM   #14
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Payment sent.

Blessings, Terry
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Old 21st September 2013, 11:19 AM   #15
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Default Here you have more videos if you are interested.

Dx Super A prototype board - YouTube
Dx Super A prototype board - part A - YouTube
YouTube
Dx Super A - starting to prepare the circuit board. - YouTube
Dx Super A prototype board - part B - YouTube
Dx Super A prototype board - part C - YouTube
Dx Super A in Portuguese language - YouTube
Dx Super A installed and first test done - YouTube
Dx Super A - 300mA in class A - Supply 40 + 40V - YouTube
Do not assemble Dx Super A for a while - YouTube

Here i have asked people not to assemble...the Gradiente circuit was found
too much dangerous, not stable, not easy to adjust...was replaced for something much more simple that produced the same audio result.

Dx Super A together Dx Blame ST operating 40 volts - YouTube
Dx Blame ST - Dx Super A - YouTube
Gradiente Model 1660 e módulo Dx Super A - YouTube
Dx Super A is hot - YouTube
Dx Blame ST+ SuperA+Low pass+Blend+cheap speaker - YouTube

And much more to come...surprises me that people has not an idea about what is Dx Super A.

Maybe the guy want to debate, or discuss...i will not do it...too much busy to discuss the stuff already approved.

regards,

Carlos
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Last edited by destroyer X; 21st September 2013 at 11:34 AM.
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Old 21st September 2013, 11:33 AM   #16
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Default Thank you still4given

Well..... i found that i may have more than 50 more videos about the Dx Super A...so...if someone is really interested to see the evolution, then go to my channel:

Carlos Mergulhão - YouTube

regards,

Carlos
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Old 21st September 2013, 03:53 PM   #17
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Thank you mister still4given boards are send it today

Regards
Juan
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Old 21st September 2013, 06:18 PM   #18
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Default This is great folks.... the group buy is flowing nicely

I suggest you all to check one to the other...to avoid mistakes.

This happens...so...check adress...after send to Juan ask his confirmation prior for shipment.

It looks Adi pcboards are being delivered now!

regards,

Carlos
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Old 21st September 2013, 09:03 PM   #19
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Default Watcj this.... Juan i already building his own

He found 4 pcboards with some small failures in the silk screen..some interrupted lines of white silks screen..anything important...but we are using (his own boards and mine own pcboards) the defective ones

We are reserving the best ones for you.

regards,

Carlos
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Last edited by destroyer X; 21st September 2013 at 09:07 PM.
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Old 22nd September 2013, 12:54 PM   #20
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The silkscreen doesn't matter, as long as the copper traces are intact! Even if they aren't.... a solder bridge will fix that :-)

Juan

Can you please let me know total shipping cost to Australia so I can transfer payment to you.

Regards

Christian
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