People use to say 2SC2922 can put out more treble...and i have also perceived that
But the difference is very small..alike you turn the treble knob from 12:00 to 01:00.
Some folks says that 2SC5200 is a little bit mufled...and this i can agree...from 12:00 to 10:00
The Dx Blame ST has much more bass than the Dx Blame ES...... Dx Blame ST can be used for Classical music that needs good bass reproduction.
The best in sonics is the Dx Blame ES..the best technically is the Dx Blame ST (measure better)
You should try Rudi.... also to feel by yourself if you agree or not with that...your thoughs are much valuable for me, also for our forum friends...give a try in some 2SC5200 or MJL4315 or the lovely ancient 2SC3281...also the pair MJL21194/21193 should be good too....despite these ones i have never listened too..... usually transistors are almost the same..because competition try to match the ones achieve big sells...they try to do the same...and they succeed....if you listen, comparing....differences are...but not so huge.
To move a speaker from the place it is, or to remove some wax from inside our ears...to move a carpet or a furniture, to replace a curtain..all this changes the sound much more.
The feedback condenser, that 220uf, if increased to 1000uf can give you more bass.... despite unballances the dinamic behavior and the amplifier becomes a little bit boomy with some speakers... a criminal action that may satisfy some folks.
These amplifiers, to reduce and control treble is easier than to increase bass...so...maybe this can be the solution...reducing treble you gonna make the the bass appear more present.... we have these two possibilities to change the ballance to have, as a result, the bass more present.
Increasing bass
Decreasing treble
I would like to say, and in a very clear way, that Dx amplifiers are flat...seems that electrically they have no increase or decrease in any frequency we have inside the audible audio spectrum.... but alike every amplifier..dinamically..it has it's own audio signature related equalization... it is louder in treble...same way Dx amplifier, the Standard one, is louder for bass..the Precision 1 is louder from midranges and the HRII is louder everywhere (loud screaming powerfull, low watt (35) crazy machine)
regards,
Carlos
But the difference is very small..alike you turn the treble knob from 12:00 to 01:00.
Some folks says that 2SC5200 is a little bit mufled...and this i can agree...from 12:00 to 10:00
The Dx Blame ST has much more bass than the Dx Blame ES...... Dx Blame ST can be used for Classical music that needs good bass reproduction.
The best in sonics is the Dx Blame ES..the best technically is the Dx Blame ST (measure better)
You should try Rudi.... also to feel by yourself if you agree or not with that...your thoughs are much valuable for me, also for our forum friends...give a try in some 2SC5200 or MJL4315 or the lovely ancient 2SC3281...also the pair MJL21194/21193 should be good too....despite these ones i have never listened too..... usually transistors are almost the same..because competition try to match the ones achieve big sells...they try to do the same...and they succeed....if you listen, comparing....differences are...but not so huge.
To move a speaker from the place it is, or to remove some wax from inside our ears...to move a carpet or a furniture, to replace a curtain..all this changes the sound much more.
The feedback condenser, that 220uf, if increased to 1000uf can give you more bass.... despite unballances the dinamic behavior and the amplifier becomes a little bit boomy with some speakers... a criminal action that may satisfy some folks.
These amplifiers, to reduce and control treble is easier than to increase bass...so...maybe this can be the solution...reducing treble you gonna make the the bass appear more present.... we have these two possibilities to change the ballance to have, as a result, the bass more present.
Increasing bass
Decreasing treble
I would like to say, and in a very clear way, that Dx amplifiers are flat...seems that electrically they have no increase or decrease in any frequency we have inside the audible audio spectrum.... but alike every amplifier..dinamically..it has it's own audio signature related equalization... it is louder in treble...same way Dx amplifier, the Standard one, is louder for bass..the Precision 1 is louder from midranges and the HRII is louder everywhere (loud screaming powerfull, low watt (35) crazy machine)
regards,
Carlos
Metal, we won't introduce any new naming conventions, please.
The namings are property of Carlos' DX DIY Corp. (not a real corporation, only in mind).
We simply will - one day - have our own design/layout of a PCB able that will be able to support both the BlameST and the BlameES schmematics on the same board and will eventually have ... and will eventually be ...
Best regards
Rudi_Ratlos
The namings are property of Carlos' DX DIY Corp. (not a real corporation, only in mind).
We simply will - one day - have our own design/layout of a PCB able that will be able to support both the BlameST and the BlameES schmematics on the same board and will eventually have ... and will eventually be ...
Best regards
Rudi_Ratlos
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Excuse me...my answers are delayed.... i had troubles with my computer and i am still
fixing it...old computer...5 years old.... not compatible with some modern things....now my ADSL is number two.... faster, now transfering in 865 kilobytes each second, 10 Giga is the way we call here...but the mother board and network adapters are not facing the modern technology, so i am suffering from interruptions.
I have repaired the windows and still scanning with several antivirus to search for virus, spywares and these things, also inspecting the register..reducing things in the HD..well....i am still trying to fix the computer..cleaning memory contact, wipping dust, checking connectors... searching for oxide...these things we all do.....reason why i will not be fast to answer these next days.
There's a delay... i am clicking and waiting the computer to move... seems something is running in the background turning the machine busy..HD stops..but seems it is in between microprocessor and memory.... i am very stupid about computers... feeling myself lost.
regards,
Carlos
fixing it...old computer...5 years old.... not compatible with some modern things....now my ADSL is number two.... faster, now transfering in 865 kilobytes each second, 10 Giga is the way we call here...but the mother board and network adapters are not facing the modern technology, so i am suffering from interruptions.
I have repaired the windows and still scanning with several antivirus to search for virus, spywares and these things, also inspecting the register..reducing things in the HD..well....i am still trying to fix the computer..cleaning memory contact, wipping dust, checking connectors... searching for oxide...these things we all do.....reason why i will not be fast to answer these next days.
There's a delay... i am clicking and waiting the computer to move... seems something is running in the background turning the machine busy..HD stops..but seems it is in between microprocessor and memory.... i am very stupid about computers... feeling myself lost.
regards,
Carlos
Attachments
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Dx Universal, or Dx Blame ES/ST are better than Dx Blame US
US has other meanings..alike United States....and this is not the case down here... despite Brazil is Democratic, a federation of states alike US...we call Estados Unidos do Brasil.... United States of Brazil...we are United States too.
If i have a vote...my vote is for:
Dx Universal (first)
Dx Blame ES/ST (second)
Dx Blame US (third)
Dx Blame UN (United Nations) not very good
Dx Blame Pack seems good.... a package that includes both, ES and ST.... package has funny meaning in some countries..this is good to memorize, to call attention and to make people remember that name.
The group leader, that should decide this is Rudi....it will better, for all of us, to discuss this subject between us...not to open to the whole forum, not to transfer to them, a decision that belongs to us.
regards,
Carlos
US has other meanings..alike United States....and this is not the case down here... despite Brazil is Democratic, a federation of states alike US...we call Estados Unidos do Brasil.... United States of Brazil...we are United States too.
If i have a vote...my vote is for:
Dx Universal (first)
Dx Blame ES/ST (second)
Dx Blame US (third)
Dx Blame UN (United Nations) not very good
Dx Blame Pack seems good.... a package that includes both, ES and ST.... package has funny meaning in some countries..this is good to memorize, to call attention and to make people remember that name.
The group leader, that should decide this is Rudi....it will better, for all of us, to discuss this subject between us...not to open to the whole forum, not to transfer to them, a decision that belongs to us.
regards,
Carlos
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Rudi is in charge if we have not unanimous decision.
He decide and we accept..someone may have authority not to allow things become a mess.
regards,
Carlos
He decide and we accept..someone may have authority not to allow things become a mess.
regards,
Carlos
My favourite name for this PCB design, my decision: DX Blame.
No revision name, no sub-type: the DX Blame PCB will support any version of Carlos' BlameES and ST - amplifiers so far.
I am in a hurry.
I will visit Volker right now and together we will power on his second BlameES for the 1st time.
His second BlameES consists of a pair of Todd's Rev. 1.3 PCBs and "rolled-your-own" PSUs.
I currently have one pair of transformers left:
So keep your fingers crossed.
I will report on this event tonight.
Best regards
Rudi_Ratlos
No revision name, no sub-type: the DX Blame PCB will support any version of Carlos' BlameES and ST - amplifiers so far.
I am in a hurry.
I will visit Volker right now and together we will power on his second BlameES for the 1st time.
His second BlameES consists of a pair of Todd's Rev. 1.3 PCBs and "rolled-your-own" PSUs.
I currently have one pair of transformers left:
An externally hosted image should be here but it was not working when we last tested it.
So keep your fingers crossed.
I will report on this event tonight.
Best regards
Rudi_Ratlos
An externally hosted image should be here but it was not working when we last tested it.
And so the good ship BLAME sets sail - searching for new sonics and dreams beyond the misty electronic seas..........Bon voyage!
So.... boss said.... name was found...we need a leader..and this project the one is
Rudi....so.... we will accept, gladly and smilling.
In my country, maybe yours too..we think that when too much people is inside the kitchen, giving suggestions and including spices, condiments and so on..the food, at least, will result salted...usually awfull.
Not to have a strong Oberkommando is not good...the Dx Blame could be Dx Shame.
So, leaders, commanders, are a need...in this case Rudi said what he decided..... in this new board project we have a Commander, a responsable by the new board design, so decisions must be taken by him.... he will not mess with the schematic....the focus is other..is board style, name, colour, artistical vision ... how it will look..the features alike supply included or not and so on....he said what he decided and.....
and we gonna say.... Yeeeeeessss!.... that's the way i like.... a man is a man... a chicken is a bird!
Good, Gut, ótimo, magnifique, buonno, magnifico, parfàit!
Carlos
Rudi....so.... we will accept, gladly and smilling.
In my country, maybe yours too..we think that when too much people is inside the kitchen, giving suggestions and including spices, condiments and so on..the food, at least, will result salted...usually awfull.
Not to have a strong Oberkommando is not good...the Dx Blame could be Dx Shame.
So, leaders, commanders, are a need...in this case Rudi said what he decided..... in this new board project we have a Commander, a responsable by the new board design, so decisions must be taken by him.... he will not mess with the schematic....the focus is other..is board style, name, colour, artistical vision ... how it will look..the features alike supply included or not and so on....he said what he decided and.....
and we gonna say.... Yeeeeeessss!.... that's the way i like.... a man is a man... a chicken is a bird!
Good, Gut, ótimo, magnifique, buonno, magnifico, parfàit!
Carlos
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Hi Director X, visitors
Would you like one of Rudi's toroids? Just click on "steal" over the image in his post! hahahahaha!
Awww!...it doesn't work? time for a computer upgrade! - try WINDOWS 8.
Well, I have some of Rudi's ES PCBs now. They arrived after a long time. So much for 'luftpost'. It won't be long before starting now.
regards
Would you like one of Rudi's toroids? Just click on "steal" over the image in his post! hahahahaha!
Awww!...it doesn't work? time for a computer upgrade! - try WINDOWS 8.
Well, I have some of Rudi's ES PCBs now. They arrived after a long time. So much for 'luftpost'. It won't be long before starting now.
regards
Yep... Dx Blame...the name include ST and ES... serves for both..generic, short and
precise...good decision.
Steal one more for me Ian (een)
regards,
Carlos
precise...good decision.
Steal one more for me Ian (een)
regards,
Carlos
This afternoon was not as successful as I hoped.
One of Volker's new DX Blame / PSU boards (Todd's offcially released 1.4 layout, Greg'S DX PSU)
worked form the start, could be easily adjusted to 4.7V, no component getting warm, .... success.
But the other one:
After power-on: no explosion, the voltage dropping over the 100 Ohm resistor beneath the fuse showed a value of 6.2V.
Not so bad - I thought.
We left the room for 5 minutes, came back, there was a very light smell in the area above the board (?),
we tried to adjust, turned the trimmer from left to right: nothing happened to the voltage.
It did not follow the VBE multiplier at all, constantly stayed at 6.2 V.
I touched the big SANKENs with my fingers: cool, I touched the second VAS, Q7, BD137: very hot.
So we have to find out what is going wrong with this board.
I will collect in a document any error ever made (the ones I know of course), while building the DX Blame.
Maybe this document will be a help for those who start with the DX Blame so they do not repeat these errors.
Best regards - Rudi_Ratlos
One of Volker's new DX Blame / PSU boards (Todd's offcially released 1.4 layout, Greg'S DX PSU)
An externally hosted image should be here but it was not working when we last tested it.
worked form the start, could be easily adjusted to 4.7V, no component getting warm, .... success.
But the other one:
After power-on: no explosion, the voltage dropping over the 100 Ohm resistor beneath the fuse showed a value of 6.2V.
Not so bad - I thought.
We left the room for 5 minutes, came back, there was a very light smell in the area above the board (?),
we tried to adjust, turned the trimmer from left to right: nothing happened to the voltage.
It did not follow the VBE multiplier at all, constantly stayed at 6.2 V.
I touched the big SANKENs with my fingers: cool, I touched the second VAS, Q7, BD137: very hot.
So we have to find out what is going wrong with this board.
I will collect in a document any error ever made (the ones I know of course), while building the DX Blame.
Maybe this document will be a help for those who start with the DX Blame so they do not repeat these errors.
Best regards - Rudi_Ratlos
An externally hosted image should be here but it was not working when we last tested it.
These problems, always connected to human mistakes..very normal and natural.
can be good to point out after we find the trouble...so..we can point what wrong happened....before the moment we discover, just punish the designer, because a natural suspection can born inside the mind of the future builders...suspections the board has something wrong or the circuit has something wrong...better to publish your adventure, in details, when you get out of it as a winner, showing the damaged part between your finger tips to our friends.
Before we find the guilty one to blame, just spread fear and light suspections.
regards,
Carlos
can be good to point out after we find the trouble...so..we can point what wrong happened....before the moment we discover, just punish the designer, because a natural suspection can born inside the mind of the future builders...suspections the board has something wrong or the circuit has something wrong...better to publish your adventure, in details, when you get out of it as a winner, showing the damaged part between your finger tips to our friends.
Before we find the guilty one to blame, just spread fear and light suspections.
regards,
Carlos
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As I said, Carlos:
One board works "as designed".
The other does not.
I am sure everybody will tell me right now: "Rudi: compare the 2 boards very closely. Take a magnifying glass, check the connection of the transistors to the heatsink, check once more the values of resistors, capacitors, directions of diodes, capacitors, resistances, ..."
That is what I will do.
Regards - Rudi_Ratlos
One board works "as designed".
The other does not.
I am sure everybody will tell me right now: "Rudi: compare the 2 boards very closely. Take a magnifying glass, check the connection of the transistors to the heatsink, check once more the values of resistors, capacitors, directions of diodes, capacitors, resistances, ..."
That is what I will do.
Regards - Rudi_Ratlos
Yes...this is the good way to do having a working board
But, you had some smell, also VBE multiplier was not adjusting bias..so... now you may have some transistor burned..and the best way is to test the suspects removing them from the board and measuring them outside.
regards,
Carlos
But, you had some smell, also VBE multiplier was not adjusting bias..so... now you may have some transistor burned..and the best way is to test the suspects removing them from the board and measuring them outside.
regards,
Carlos
Sorry Ian,
it was late in the evening yesterday and I have already begun checking the board.
I am talking about the 2nd VAS, being a BD139 of course.
Best regards - Rudi
it was late in the evening yesterday and I have already begun checking the board.
I am talking about the 2nd VAS, being a BD139 of course.
Best regards - Rudi
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