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Old 26th October 2012, 07:55 AM   #41
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Default Yes... i did it...this made my day.

Today i gonna have Pizza and Coke....i deserve that.

Join the "Corporation" boys!

We are like an army, to defense your freedom and right to listen a good sound!

regards,

Carlos
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File Type: jpg Enjoyment... i did it!.jpg (304.2 KB, 664 views)
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File Type: jpg Army.jpg (534.2 KB, 618 views)
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Last edited by destroyer X; 26th October 2012 at 07:59 AM.
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Old 26th October 2012, 09:58 AM   #42
AndrewT is offline AndrewT  Scotland
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1300 words and no information !
Where are the technical details?
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Old 26th October 2012, 12:48 PM   #43
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Default Ahahahahah!.... have you counted the words?...it seems it is a little bit more

Technical data soon.

Also schematic soon...and pcboard too.

regards,

Carlos
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Last edited by destroyer X; 26th October 2012 at 12:50 PM.
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Old 26th October 2012, 02:20 PM   #44
Krisfr is offline Krisfr  United States
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Hey Carlos are you going to share out the macros that where used to create the PCB in Sprint?
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Old 26th October 2012, 04:10 PM   #45
dadod is offline dadod  Croatia
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Quote:
Originally Posted by AndrewT View Post
1300 words and no information !
Where are the technical details?
But this is "the best audio amp ever made" why do you need any thechical details?
Strange Carlos already made perfect amp, this one now should be super perfect or what.
There is another guy in this forum making the best amps, very interesting self promotion.
dado
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Old 26th October 2012, 06:14 PM   #46
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Default Macros will be shared by Juan...he is starting to make our layout

About best amplifier...well... i had several two best ones...the Dx Blame ST and now the Dx Super A ... now a days Dx Super A is in the throne.... i do not know in the future if i will make another one even better...i doubt...but it is always possible.... as anything is perfect.... this is the most perfect i have listened..but i had not better experience.

Give it a try boys.... tell me what you feel about.

Here is the schematic... the final one...will not change anything more.

What we have interesting about it:

It starts operating with 250 mA each rail (around 20 watts of dissipation) and this is keept this way when you go increasing the volume till you reach 6 Watts RMS at 8 ohms..then it leaves the class A operation and goes, slowly, decreasing the DC bias current that become 5 watts of waste energy (dissipation) at 40 watts RMS and goes to 2 watts of waste energy (dissipation) from 60 watts RMS and up... DC bias current will be around 25 miliamperes minimum all time long, even if you operate it above 60 watts RMS... this represents a very small waste of energy.... this is not that important when we will have 1.5 A of dinamic current each rail when the audio amplifier is in operation... this is Super A... a few watts in classe A (no crossover distortion, a very pure sound at normal listening volumes that usually are not higher than 2 watts RMS each channel)... then when we need power, this kind amplifier "switches" to Class AB and the efficiency becomes much better (jumps from 20 to 30 percent to 55 to 65 percent).... so, you will not have the Class A heat, that could be 300 watts of more of heat... in our case you have 20 watts till 6 watts RMS and power dissipation will be less than 150 watts when operating full power.

I will inform power at several impedances... aprox. 77, 150 and 280 Watts RMS to 8,4 and 2 ohms... THD to 8 ohms full power is less than 0.0015%.... frequency response goes flat from 10 hertz to 130 kilohertz..input impedance is 56K.... sensitivity is 750 milivolts peak to full power swing in the output, but this is adjustable in any other condition you want replacing a single resistor... second harmonic is 6 to 7 times bigger than third (and this is great!)... this is tube alike sonics.

Harmonic distribution and some other graphics will be posted soon....but some information about current, transformer power and other details, were already posted in this same thread and will be the same to the Dx Blame Super A, to the Dx Super A and to the Dx Super A - MKII.... say... power needs to transformers, quantity of electrolitic condensers to the supply to 8,4 and 2 ohms and fuses will be the same as the supply voltage is the same (42 plus 42 volts DC)

regards,

Carlos
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File Type: pdf Dx Super A - MKII - final schematic.pdf (56.1 KB, 407 views)
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A Darlington audio amplifier, a toy for your weekend enjoyment; https://www.youtube.com/watch?v=yk0qvkwsAOY, No overshot; https://www.youtube.com/watch?v=CEgK4l0MH8k

Last edited by destroyer X; 26th October 2012 at 06:41 PM.
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Old 26th October 2012, 07:06 PM   #47
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Default The amplifier is ready to go!... approved!

Here is audio sample i have made a few minutes ago:

Dx Super A - treble reproduction is beautiful - YouTube

regards,

Carlos
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Old 26th October 2012, 07:16 PM   #48
lineup is offline lineup  Sweden
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YouTube music has nothing to do with good sound.
It is a crippled sound in several ways.
What do you think is the bandwidth of a transfer through Youtube?
It is crappy sound, man.
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Old 26th October 2012, 07:46 PM   #49
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Default I know that lineup, the idea is to show the unit is playing

Also to differentiate uncle charlie from other designers that produces only simulator schematics.... i do the whole thing.

I have already explained that to forum folks..the ones use to read my threads know that very well.

Sadly you have not made any new discovery...we all know that.

Build my amplifier and you gonna love me more.

regards,

Carlos
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Old 26th October 2012, 08:04 PM   #50
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Default You know Lineup... Sweden is go to be frozzen cold

Why don't you buy some air tickets with all that matress filled with money you have at your sleeping room.... why not to open it and remove all this money and come to South America then you will listen uncle charlie amplifier live!

My appartment if here, i can have a room for you and a nice bed....here you will pay only your personnal food if you dislike mine.

A good chance to make an International travell, almost for free.... here is almost summer...girls are almost naked at the beaches and they love green eyes.... you can bring your partner Gromanswe with you.

regards,

Carlos
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File Type: jpg Heheheheh..jpg (16.1 KB, 539 views)
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A Darlington audio amplifier, a toy for your weekend enjoyment; https://www.youtube.com/watch?v=yk0qvkwsAOY, No overshot; https://www.youtube.com/watch?v=CEgK4l0MH8k

Last edited by destroyer X; 26th October 2012 at 08:09 PM.
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