Hi Carlos
PLL or Lex is fine
I know what you mean -- one can get too bogged down in the science and can slow creativity. LOL.......... I thought electrons were pink?😉
Hi Rudi
It looks excellent - I shall be mounting mine on the sufaces of the heatsinks and inverting them so they are between the heatsink and aluminium plate hoping for a lot of surface area cooling per device.
Thank you -
PLL
Heat exchange to the air, heat transference, heat sinking, depends the are in contact
with air.
The thick panel is nice, it is pretty, but really shows a fake advantage, because the enormous quantity of metal delays the heat transference to the surface..where really you will have heat exchange, heat transference to the air...when air is heated, then aluminium surface is cooled.
The big block goes heating slowly... this is the delay... take some time to heat till the surface..but when reaching the surface, and start to really cool the metal block, the inner metal is already very hot... metal molecules vibrating a lot... and the cooling will happens only by the surface exposed to the air.
What this means...only a delay...if you ask more cooling than the surface can provide, them the metal block will be very hot and will delay a lot to be cooled, because very massive.
Hot iron....the one to clothing, to fabrics, to shirts and pants.... it is 1000 watts...and you switch it on and for several seconds it goes cold...but soon all the inner metal goes hot and the surface goes burning cloth, fingers and everything you touch with the hot iron.
Soldering iron..... when you start, despite several watts of heating in this small block of metal..you have a delay..then , seconds after, you have it melting solder.
Motorcicle, engine sinking... you can run your motorcicle and the head goes cool.... then, it becomes very hot.... this is delay.
If Volker heatsink is running fine and cold, is because the surface dimension is fine, the transformer power is not so huge, his music is not constant, or your environment is cold...for sure the fact to be massive is not an advantage.
It is pretty, cool, lovely, rich, interesting, charming, original, creative and so on..but not more efficient than the same size (area exposed to the air) with 2 milimeters thickness.
Real test is:
take a sinusoidal oscilator, adjust it to 1 kilohertz, inject this sinal with 1 volts peak to both channels input...then connect two 100 watts and 4 ohms resistances in each output...let it working for 1 hours...then tell me what happened...maybe you will be able to cook some eggs there.
regards,
Carlos
with air.
The thick panel is nice, it is pretty, but really shows a fake advantage, because the enormous quantity of metal delays the heat transference to the surface..where really you will have heat exchange, heat transference to the air...when air is heated, then aluminium surface is cooled.
The big block goes heating slowly... this is the delay... take some time to heat till the surface..but when reaching the surface, and start to really cool the metal block, the inner metal is already very hot... metal molecules vibrating a lot... and the cooling will happens only by the surface exposed to the air.
What this means...only a delay...if you ask more cooling than the surface can provide, them the metal block will be very hot and will delay a lot to be cooled, because very massive.
Hot iron....the one to clothing, to fabrics, to shirts and pants.... it is 1000 watts...and you switch it on and for several seconds it goes cold...but soon all the inner metal goes hot and the surface goes burning cloth, fingers and everything you touch with the hot iron.
Soldering iron..... when you start, despite several watts of heating in this small block of metal..you have a delay..then , seconds after, you have it melting solder.
Motorcicle, engine sinking... you can run your motorcicle and the head goes cool.... then, it becomes very hot.... this is delay.
If Volker heatsink is running fine and cold, is because the surface dimension is fine, the transformer power is not so huge, his music is not constant, or your environment is cold...for sure the fact to be massive is not an advantage.
It is pretty, cool, lovely, rich, interesting, charming, original, creative and so on..but not more efficient than the same size (area exposed to the air) with 2 milimeters thickness.
Real test is:
take a sinusoidal oscilator, adjust it to 1 kilohertz, inject this sinal with 1 volts peak to both channels input...then connect two 100 watts and 4 ohms resistances in each output...let it working for 1 hours...then tell me what happened...maybe you will be able to cook some eggs there.
regards,
Carlos
Attachments
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Adjusting bias to 5.8V, plaing the amp for some houers, realy loud 🙂)
The sankens themperatur is not more than 35 °C....
..a little bit too cold? I think they have a operatingthemperatur round about 45 °C ??
Yes Ekkart, seems your heatsink is really doing a very good job
...a surprise to me....maybe your home temperature is around 22...here i have 30...maybe this is the difference...all i know is based in 30 degrees home.
Well, nothing to complain... the massive heatsink worked great.
Check if your output is really reaching 20 volts each channel,if not you should decrease. R7.....20 volts RMS when using 4 ohms loads will generate the maximum heat, in special if you have a continuous sinusoidal tone, unclipped tone.... connect a dummy load, a resistance to this test, or cheap speakers you do not mind to burn.... so, this way, the amplifier will put out 100 watts RMS each channel...means, more than 300 watts of power consumption.
Congratulations, your amplifier is really "cool" if your heatsinks does not reach 56 degrees celsius under these conditions...in my place, for sure it will overheat.... here is hot.... ocean watter is 28 degrees celsius here..air is 29 or 30 degrees celsius...and this when you are not exposed to sunligth...this is shadows temperature.
My 60 centimeters diameter fan works all time long.... if not you will not be able to be inside this room
regards,
Carlos
...a surprise to me....maybe your home temperature is around 22...here i have 30...maybe this is the difference...all i know is based in 30 degrees home.
Well, nothing to complain... the massive heatsink worked great.
Check if your output is really reaching 20 volts each channel,if not you should decrease. R7.....20 volts RMS when using 4 ohms loads will generate the maximum heat, in special if you have a continuous sinusoidal tone, unclipped tone.... connect a dummy load, a resistance to this test, or cheap speakers you do not mind to burn.... so, this way, the amplifier will put out 100 watts RMS each channel...means, more than 300 watts of power consumption.
Congratulations, your amplifier is really "cool" if your heatsinks does not reach 56 degrees celsius under these conditions...in my place, for sure it will overheat.... here is hot.... ocean watter is 28 degrees celsius here..air is 29 or 30 degrees celsius...and this when you are not exposed to sunligth...this is shadows temperature.
My 60 centimeters diameter fan works all time long.... if not you will not be able to be inside this room
regards,
Carlos
Attachments
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Dear Carlos,
what a nice weather you have....in Germany there is wintertime, -4 degrees midday, -11 in the night, and naturelly shadow temperatures. What is "sunlight" ??!? Can i by something like this in a store? ;-)
Ok, lets talk about my new amp 🙂
I have had a look at the powercunsum.
30 Watts when idle and up to 60Watts when it plays realy loud and somethings in the closed have nice vibrations...
The amp is playing with Canton Ergo SC-L, nice old speakers, and i have never heared them so young and quickly, fresh and dynamically.....cool 🙂
nice regards..volker
Thanks Carlos and Rudie it's all clear to me now.About the resistors Carlos I'll do it your way.For the capacitors I only use the best your amp must be the reference for many people that's my goal.
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Go for it, Meanman.
The BlameES has what it takes to kick any AMP's a**.
(Is this good English? Langenscheidt Translator told me so).
And please: publish some pictures about your progress, pictures of your components, etched board, your measuring instruments, ...
I have two "measuring instruments":
An externally hosted image should be here but it was not working when we last tested it.
and
An externally hosted image should be here but it was not working when we last tested it.
Best regards - Rudi_Ratlos
We are feeling ourselves exausted here... reason why people use to go to see a movie
or go shopping in giant malls we have here...because air conditioned.....Wal Mart is here too, also Carrefour and other big ones.
I live alone, so i have to cook, to clean haus, to wash dishes, wash things, to wipe floor.... and this is exausting because the weather...i am swetting a lot and having multiple shower each day...no wind today.... a hell today.
Daugther, a teenager, is here visiting daddy, i have made a Chocolate Cake to her and she is studying english with her private teacher...next year she will go to Disneyworld.
Doors opened to allow wind flows... fan and air conditioned working all time long.
Thank you by the nice evaluation about the Dx Blame ES...i am glad you also felt it very good.
regards,
Carlos
or go shopping in giant malls we have here...because air conditioned.....Wal Mart is here too, also Carrefour and other big ones.
I live alone, so i have to cook, to clean haus, to wash dishes, wash things, to wipe floor.... and this is exausting because the weather...i am swetting a lot and having multiple shower each day...no wind today.... a hell today.
Daugther, a teenager, is here visiting daddy, i have made a Chocolate Cake to her and she is studying english with her private teacher...next year she will go to Disneyworld.
Doors opened to allow wind flows... fan and air conditioned working all time long.
Thank you by the nice evaluation about the Dx Blame ES...i am glad you also felt it very good.
regards,
Carlos
Attachments
Yes Meanman, i think it will be a reference...in Brazilians foruns the amplifier is
considered top performer..people is buiding to compare with Macintosh..hehehe... i feel pity about that one.
thank you,
regards,
Carlos
considered top performer..people is buiding to compare with Macintosh..hehehe... i feel pity about that one.
thank you,
regards,
Carlos
I do not drink dear Rudi...only once a year..during christmas.
But i love the taste of whisky, and in special the smell..... smells good, i use after shave, i love that wooden smell.
Yes... i do shave the neck.
regards,
Carlos
But i love the taste of whisky, and in special the smell..... smells good, i use after shave, i love that wooden smell.
Yes... i do shave the neck.
regards,
Carlos
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I would like to thank people from Germany, from Italy and from Russia
that has visited the youtube video "Germans in Brazil".
Very good number of hits for a couple of days...so, thank you folks!.. I will produce an other one with hundreds of pictures for you, and very soon.
regards,
Carlos
that has visited the youtube video "Germans in Brazil".
Very good number of hits for a couple of days...so, thank you folks!.. I will produce an other one with hundreds of pictures for you, and very soon.
regards,
Carlos
Attachments
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Dx amplifiers assembled around the world....part 1 from two videos
only part one is ready...there are much more than that to come:
YouTube - Destroyer x amplifiers - pictures
Germans have evaluated the Dx Blame ES, and they did comparisons
What happened?
We gonna see in the next exciting chapter... "The smashed one!"
Rudi will post something at night (Germany time)
regards,
Carlos
URL=http://img11.imageshack.us/i/shootout014.jpg/]
only part one is ready...there are much more than that to come:
YouTube - Destroyer x amplifiers - pictures
Germans have evaluated the Dx Blame ES, and they did comparisons
What happened?
We gonna see in the next exciting chapter... "The smashed one!"
Rudi will post something at night (Germany time)
regards,
Carlos
URL=http://img11.imageshack.us/i/shootout014.jpg/]
An externally hosted image should be here but it was not working when we last tested it.
[/URL]
Beautifull picture....yeah, Rudi told me that would post
your conclusions, evaluations and review about.
The tunning you gave into the bias deeply interests me.
Very good job you have done together...deep congratulations.
regards,
Carlos
your conclusions, evaluations and review about.
The tunning you gave into the bias deeply interests me.
Very good job you have done together...deep congratulations.
regards,
Carlos
DXCorp. AMP Shootout
The management board of DXCorp. Intl. German Divission (consisting of Volker, my friend Joe and me) performed a shootout
between two of the most famous creations of the DXCorp.: the Standard DXAmp (mine) and the BlameES (Volker's).
Here are the two antagonists:
The BlameES: on the ALU bottom plate, the Standard DXAmp in the wooden case.
The equipment: Files in .flac-format, being stored on Volker's PC, being converted to analog in his Advance Acoustic MPP 505
and driving a pair of CANTON Speakers Ergo SC-L.
After Joe and I had taken place and Volker switched on his BlameES:
I felt a big shock 😱 .
Aaarrggghh! The BlameES played "like a dull", like a belling deer.
Loud, but with lack of precision, lack of heights and with a muffled bass.
Hard to believe since Carlos always spoke most highly of the BlameES.
After some minutes of listening we installed my Standard DXAmp and listened to the same music (Katie Melua, Eric Clapton and some Jazz music).
The DXAmp played more precisely, with sharp bass outlines, but missing a bit of fundament.
However: the total sonic impression of the DXAmp was superior to that of the BlameES.
Volker informed us that he has followed Carlos' instructions concerning the adjustment of the BlameES.
Adjust bias trimpot to read from 3.3V to 6V over the 100 ohms series resistor.
He began with 3.3V several days ago and reached 6V yesterday.
He told us that the sound has been improving each day and we dared and adjusted the trimpot so the voltage over the 100Ohm
series resistor beneath the rails read 7.75V. 😕
Only then did the BlameES begin to show his real talents.
He began "to play": smooth, with emotion, big and wide stage, outlining the instruments and voices, the clarinette no longer sounded harsh, it sounded natural.
And Carlos is right: the bass is indeed playing a very little bit shy (at least in my ears, not in Volker's).
Of course: the BlameES has lots of bass and it can make your home tremble, but do not mix “Bass” and “loudness”.
When it comes to a sudden drum, the touch of a string of a bass guitar, I missed the “attack”, the velocity of the bass.
Adjusted like this (7.75V) the BlameES plays and sounds beautifully.
It is a great AMP indeed.
Compared with my Standard DXAmp there is a difference like between two generations: the DXAmp, playing like a teenager, easy-going, impetuously,
whereas the BlameES plays "adult", naturally, with a deep and stable fundament, with charme and emotion.
I wonder if the SANKEN transistors Volker used are the perfect choice for the BlameES, since we had to overdrive Carlos' recommendations by nearly 2V.
Is this "healthy" for the BlameES, Carlos?
Should we try another brand of output-transistors?
And there is another thing that deeply impressed me: Volker's way to keep the SANKENs cool: to simply screw them into his 10mm ALU bottom plate.
I put my finger on the bottom plate and the SANKENs when I entered Volker's home: 30 degrees.
We listened 2-3 hours and when I left I checked the temperature another time: 30 degrees.
Tonight I will publish some more pictures.
So long - Rudi - Vice-Admiral of DXCorp. Intl. German Division
The management board of DXCorp. Intl. German Divission (consisting of Volker, my friend Joe and me) performed a shootout
between two of the most famous creations of the DXCorp.: the Standard DXAmp (mine) and the BlameES (Volker's).
Here are the two antagonists:
The BlameES: on the ALU bottom plate, the Standard DXAmp in the wooden case.
The equipment: Files in .flac-format, being stored on Volker's PC, being converted to analog in his Advance Acoustic MPP 505
and driving a pair of CANTON Speakers Ergo SC-L.
After Joe and I had taken place and Volker switched on his BlameES:
I felt a big shock 😱 .
Aaarrggghh! The BlameES played "like a dull", like a belling deer.
Loud, but with lack of precision, lack of heights and with a muffled bass.
Hard to believe since Carlos always spoke most highly of the BlameES.
After some minutes of listening we installed my Standard DXAmp and listened to the same music (Katie Melua, Eric Clapton and some Jazz music).
The DXAmp played more precisely, with sharp bass outlines, but missing a bit of fundament.
However: the total sonic impression of the DXAmp was superior to that of the BlameES.
Volker informed us that he has followed Carlos' instructions concerning the adjustment of the BlameES.
Adjust bias trimpot to read from 3.3V to 6V over the 100 ohms series resistor.
He began with 3.3V several days ago and reached 6V yesterday.
He told us that the sound has been improving each day and we dared and adjusted the trimpot so the voltage over the 100Ohm
series resistor beneath the rails read 7.75V. 😕
Only then did the BlameES begin to show his real talents.
He began "to play": smooth, with emotion, big and wide stage, outlining the instruments and voices, the clarinette no longer sounded harsh, it sounded natural.
And Carlos is right: the bass is indeed playing a very little bit shy (at least in my ears, not in Volker's).
Of course: the BlameES has lots of bass and it can make your home tremble, but do not mix “Bass” and “loudness”.
When it comes to a sudden drum, the touch of a string of a bass guitar, I missed the “attack”, the velocity of the bass.
Adjusted like this (7.75V) the BlameES plays and sounds beautifully.
It is a great AMP indeed.
Compared with my Standard DXAmp there is a difference like between two generations: the DXAmp, playing like a teenager, easy-going, impetuously,
whereas the BlameES plays "adult", naturally, with a deep and stable fundament, with charme and emotion.
I wonder if the SANKEN transistors Volker used are the perfect choice for the BlameES, since we had to overdrive Carlos' recommendations by nearly 2V.
Is this "healthy" for the BlameES, Carlos?
Should we try another brand of output-transistors?
And there is another thing that deeply impressed me: Volker's way to keep the SANKENs cool: to simply screw them into his 10mm ALU bottom plate.
I put my finger on the bottom plate and the SANKENs when I entered Volker's home: 30 degrees.
We listened 2-3 hours and when I left I checked the temperature another time: 30 degrees.
Tonight I will publish some more pictures.
So long - Rudi - Vice-Admiral of DXCorp. Intl. German Division
I remember SANKENs as sounding very neutral, some might call it flat or dull
Analytical is not my favourite word, but might be fair to use
"Clean and objective" could be other possible phrases
Running that cool indicates very low bias
Knowing Carlos, that might be intentional 😉
And I guess it also points at amps being stable
Yes, intentional to run cool and bias settings are for start up only
It was excelent you mention that, this will be helpfull for builders.
For sure each transistor set needs different bias to perform optimized, and this is done, usually the way you did..congratulations to you Rudi, and also Volker, by your "sensitivity" to check bias and to readjust.
Nice review, realistic and fair, this is what Dx Blame ES is, not a teenager amplifier.
So, was registered here, that bias seetings for 7.5 volts (75 miliamperes) resulted perfect using Sankens...good that... this means 75 miliamperes and is already considered normal to AB amplifiers, that usually go from 25 to 100 miliamperes.
Thank you very much, now enjoy your amplifier and smash some competition... let the Blame kill some other brands too, i am deeply interested to know if others can make the same or better job.
But remember, some friends can not appreciate to have expensive amplifiers smashed.... it is up to you to create the "stammtisch" with comparative, A to B testings.
The amplifier worked cool, this is fine, mine one here goes warm and i am using a very small heatsink, sized for 150 watts only....my home temperature is 29 degrees... lovely this amplifier, alike some others, works cool, does not overheat.
regards,
Carlos
It was excelent you mention that, this will be helpfull for builders.
For sure each transistor set needs different bias to perform optimized, and this is done, usually the way you did..congratulations to you Rudi, and also Volker, by your "sensitivity" to check bias and to readjust.
Nice review, realistic and fair, this is what Dx Blame ES is, not a teenager amplifier.
So, was registered here, that bias seetings for 7.5 volts (75 miliamperes) resulted perfect using Sankens...good that... this means 75 miliamperes and is already considered normal to AB amplifiers, that usually go from 25 to 100 miliamperes.
Thank you very much, now enjoy your amplifier and smash some competition... let the Blame kill some other brands too, i am deeply interested to know if others can make the same or better job.
But remember, some friends can not appreciate to have expensive amplifiers smashed.... it is up to you to create the "stammtisch" with comparative, A to B testings.
The amplifier worked cool, this is fine, mine one here goes warm and i am using a very small heatsink, sized for 150 watts only....my home temperature is 29 degrees... lovely this amplifier, alike some others, works cool, does not overheat.
regards,
Carlos
Some images of yesterday's shootout
Joe: Chief Attorney at Sound
Volker: Chief Engineer and Prototype Explorer, adjusting the BIAS
The "King of the AMPs":
Best regards - enjoy 😀 - Rudi_Ratlos (Vice Admiral of DXCorp. Intl German Division)
Joe: Chief Attorney at Sound
An externally hosted image should be here but it was not working when we last tested it.
Volker: Chief Engineer and Prototype Explorer, adjusting the BIAS
An externally hosted image should be here but it was not working when we last tested it.
The "King of the AMPs":
An externally hosted image should be here but it was not working when we last tested it.
Best regards - enjoy 😀 - Rudi_Ratlos (Vice Admiral of DXCorp. Intl German Division)
An externally hosted image should be here but it was not working when we last tested it.
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That's perfect...all Dx Corporation members have nice titles
Division, Overseas, Chairman, CEO, General Manager, Director...all Dx members are executive class people, all VIP.
Good!.... we are positive...we love one each other, we cooperate, we share.
regards,
Carlos
Division, Overseas, Chairman, CEO, General Manager, Director...all Dx members are executive class people, all VIP.
Good!.... we are positive...we love one each other, we cooperate, we share.
regards,
Carlos
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