PCB long ....but short
Hi ,
I'am back again vith another long .... but short variant PCB , not electrical verifyed , I hope without errors . http://i43.tinypic.com/14a6b9.gif . or http://picasaweb.google.com/popalexmm/Electronice#5349809667795331074
Regards Alex mm .
Hi ,
I'am back again vith another long .... but short variant PCB , not electrical verifyed , I hope without errors . http://i43.tinypic.com/14a6b9.gif . or http://picasaweb.google.com/popalexmm/Electronice#5349809667795331074Regards Alex mm .
PCB for MJL 21193
Hi MJL 21193 ,
I made for you the layout , I think It's acceptable http://i43.tinypic.com/2cx6d7n.jpg
Regards Alex mm .
Hi MJL 21193 ,
I made for you the layout , I think It's acceptable http://i43.tinypic.com/2cx6d7n.jpgRegards Alex mm .
Alex do the things the way i like
Congratulations Alex...another nice board...you are becoming our "forum reference" about board"s layout.
You are skilled, clever and competent..but i found a defect on that...you are so productive, and offer so many options, all them very good, that disturbs a little people intention to build your stuff... so many good possibilities sometimes drives people to be "paralised" watching so many choices without beeing able to decide the better one to use.
I suggest to offer one, and ask for the thread opener acceptance, then keep that one without modifications.
You see... watching your lovely board i felt interested to build.... but if you appear with other i will be in stand by waiting by the last model you may make...and i will not move anymore...who knows if you will not appear with something super hiper great special design?..... so.... that option is harmfull.
I could see, while maintaining threads alive, that several options of circuits and boards are a big problem.
If Da Vinci decided to upgrade Monalisa...maybe would paint a moustache there..and all magic could disappear.
I hope, this will not happens here....i am not following this thread... i have only watched the schematic and found it alike the one Bittner does, and now curious that i could see your name into the thread...i came to visit....i really do not know if you have offered just one or several layouts.
regards,
Carlos
Congratulations Alex...another nice board...you are becoming our "forum reference" about board"s layout.
You are skilled, clever and competent..but i found a defect on that...you are so productive, and offer so many options, all them very good, that disturbs a little people intention to build your stuff... so many good possibilities sometimes drives people to be "paralised" watching so many choices without beeing able to decide the better one to use.
I suggest to offer one, and ask for the thread opener acceptance, then keep that one without modifications.
You see... watching your lovely board i felt interested to build.... but if you appear with other i will be in stand by waiting by the last model you may make...and i will not move anymore...who knows if you will not appear with something super hiper great special design?..... so.... that option is harmfull.
I could see, while maintaining threads alive, that several options of circuits and boards are a big problem.
If Da Vinci decided to upgrade Monalisa...maybe would paint a moustache there..and all magic could disappear.
I hope, this will not happens here....i am not following this thread... i have only watched the schematic and found it alike the one Bittner does, and now curious that i could see your name into the thread...i came to visit....i really do not know if you have offered just one or several layouts.
regards,
Carlos
Even if that might not be practical, designing the pcb with input stage options might be doable. Then everyone can decide to use FETs and/or cascodes there.
Will it ever be?
That's why a versatile pcb might be a good option.
Have you tried it?
It might be interesting to know what affects what and how. Did you make any notes on that?
One thing I might be interested to know is if using a regulated supply, perhaps higher voltage, for the low current stages might not improve things and if you are thinking of trying it.
Will it ever be?
The base amp , WITHOUT the additions is up and working. While I am 99% sure the cascode will work and still be stable , the BASE design is 100% (listening to it now
That's why a versatile pcb might be a good option.
Have you tried it?
It might be interesting to know what affects what and how. Did you make any notes on that?
One thing I might be interested to know is if using a regulated supply, perhaps higher voltage, for the low current stages might not improve things and if you are thinking of trying it.
PDB
Alex mm, will you be making the PCBs available to everyone?
I am with Carlos, the fewer options the better, too many options means that you really don't know which one to pick. If all the options give little improvement in performance can we decide which way to go and just pick one?
Of course you did the work so its your decision, just my opinion.
Alex mm, will you be making the PCBs available to everyone?
I am with Carlos, the fewer options the better, too many options means that you really don't know which one to pick. If all the options give little improvement in performance can we decide which way to go and just pick one?
Of course you did the work so its your decision, just my opinion.
Only two PCB for supersymasym
Hi ,
First of all I wish to thanks for comments , but only two PCB for Supersymasym was posted in this thread , and one for MJL 21193 another schematic , not so many choices only two .I promise to myself not to doo anymore PCB for diyAudio , to not create confusion . I stil waching in the future threads what interesting me .
All the best Alex mm.
Sorry for my bad english.
Hi ,
First of all I wish to thanks for comments , but only two PCB for Supersymasym was posted in this thread , and one for MJL 21193 another schematic , not so many choices only two .I promise to myself not to doo anymore PCB for diyAudio ,
to not create confusion . I stil waching in the future threads what interesting me . All the best Alex mm.
Sorry for my bad english.
Man...in the name of God!
Hey Alexandru!
We will be in a big ship without you!
Do not abandon us, you are the best doing that....please, do not do that.
Offer boards to the ones you want, to the schematics you like...do not give up..we need you.
Please!
Stay with us...just make one board only...just one.
I know you are not happy with uncle Charlie...i am sorry if i was rude or energic with you with a direct mail...i was just obbeing things i have learned into this forum.
Do not abandon us Alex...please!
We gonna be hucked without you!... you gonna kill this forum...will be more an more empty... a terrible dry desert...we are still having problems...a lot of "the same" amplifiers rolling...now Symassym..already explored...so.... forum is going bad in my point of view...if you abandon...my God!
If you cannot make just one...all rigth... i will accept several models if this will make you happy and you will stay with us.
To the Trust you are invited to make several...the ones you want.
Cooperative fellows are a rarity..we have thousands of analists, theorists, disturbers, boring fellows, "why don't you" fellows...but people that build and offer help, produce boards, tested schematics, built schematics...those are rarity..you are one of the best ones we have..if not the best to make boards.
regards,
Carlos
Hey Alexandru!
We will be in a big ship without you!
Do not abandon us, you are the best doing that....please, do not do that.
Offer boards to the ones you want, to the schematics you like...do not give up..we need you.
Please!
Stay with us...just make one board only...just one.
I know you are not happy with uncle Charlie...i am sorry if i was rude or energic with you with a direct mail...i was just obbeing things i have learned into this forum.
Do not abandon us Alex...please!
We gonna be hucked without you!... you gonna kill this forum...will be more an more empty... a terrible dry desert...we are still having problems...a lot of "the same" amplifiers rolling...now Symassym..already explored...so.... forum is going bad in my point of view...if you abandon...my God!
If you cannot make just one...all rigth... i will accept several models if this will make you happy and you will stay with us.
To the Trust you are invited to make several...the ones you want.
Cooperative fellows are a rarity..we have thousands of analists, theorists, disturbers, boring fellows, "why don't you" fellows...but people that build and offer help, produce boards, tested schematics, built schematics...those are rarity..you are one of the best ones we have..if not the best to make boards.
regards,
Carlos
Attachments
Exactly , Alex has made a very nice board. I am also done with a very nice one. I see NO reason why both artworks can not be offered as options. My board will just be the "strait up" supersym, exactly the one at the beginning of the thread. Alex's can be the modified one with the cascode /JFET.
With alex's , one could just jumper C-E's on the cascodes and run a "strait" supersym .. no issue. In fact, if alex uploads his artwork to me, I will host it for the thread.
To answer calmart's question , I HAVE run the cascoded FET input stage successfully with the KSC1845's on every topology (balanced ,APT,self and RCA "bootstrapped"). The reason my present amp does not have it , is that the perceived sound improvement did not justify it for ME (truly subjective). CFP inputs , JFET ... all the different input stage configurations sounded nearly the same with this and other topologies (again subjective).
As one who has gone "around the world" with all the AB DIY amps on the forum , (bootstrap , self ,leach, this one , roender's folded design) , I must say , even objectively , only this one and roender's can retain the same precise hypnotic sound from the "first watt" to insane levels at hundreds of watt's (really).
After submitting my "plain jane" supersym (maybe tonight) , I want to start on a standardized OPS so I can just "plug in" any
modified LTP/VAS creation without having to redo the complete board. This way, I can test ANY mod , at full power within hours of conception. This will also give me chance to play with SMD input stages (Aussie amp style) , which , by the way.. I feel is the way to go (as far as the LTP/VAS).
OS
Re: PCB for MJL 21193
You are amazing Alex! Verrrry cool. I will email you.
alex mm said:Hi MJL 21193 ,
Regards Alex mm .
You are amazing Alex! Verrrry cool. I will email you.
Re: Only two PCB for supersymasym
Alex, please disregard all those ridiculous comments, which sound a bit as if trying to contain your enthusiasm on this project.
Even the suggestions made to you on how to better setup tracks, lowering THD and all that, should be instructive to many of us.
Several parts in syma can be improved, and designing even a thousand pcbs for it can be helpful, even if perhaps boring to others. To me it's not.
alex mm said:First of all I wish to thanks for comments , but only two PCB for Supersymasym was posted in this thread , and one for MJL 21193 another schematic , not so many choices only two .I promise to myself not to doo anymore PCB for diyAudio ,
All the best Alex mm.
Sorry for my bad english.
Alex, please disregard all those ridiculous comments, which sound a bit as if trying to contain your enthusiasm on this project.
Even the suggestions made to you on how to better setup tracks, lowering THD and all that, should be instructive to many of us.
Several parts in syma can be improved, and designing even a thousand pcbs for it can be helpful, even if perhaps boring to others. To me it's not.
Hi ostripper
I did a new version, called for Supersym-2.
I have achieved a good result , distortion of 0.005% with 180W rms in 20Khz, Slew rate is the 90 Vus.
I also added the short circuit protection.
What is your opinion, I should open another topic?
I use the same transistors of the design (are very good you chose well). The original project is yours, so I am asking
-I do not have the pcb
I did a new version, called for Supersym-2.
I have achieved a good result , distortion of 0.005% with 180W rms in 20Khz, Slew rate is the 90 Vus.
I also added the short circuit protection.
What is your opinion, I should open another topic?
I use the same transistors of the design (are very good you chose well). The original project is yours, so I am asking
-I do not have the pcb
I would not mind at all , In fact I would like to see it.. submit .asc and/or schema..
is it triple.??Give me a freakin' break , man... (attached) is the 95% done version, I am not getting paid for this , so I do it on my own time line. The other 4 in this folder
http://71.236.32.49/pdf1/SUPERSYM_ASSD/
are PDF'ed with screen prints and all.
Quasi (poweramp under development) did his first bugfilled draft of the NMOS a couple weeks into the thread and another month or so went by before a workable version appeared. In this thread,
things were going good till our s. american friend (dx) just had to inform Alex MM that he was doing too many versions. WTF !!! Is he the #$%#@ in' forum master. I was truely impressed by alex's
Sym' w/ PS included , and now a$$wipes scared him away and totally Pee'd me OFF.
There are a lot of threads in DIYA land that offer NOTHING besides concept , a tease , or a bunch of subjective banter... nothing you can build .. or even discuss.
So BS and sarcasm are very counter-productive here as this project, (at least the base design) does no wrong. I even shorted it , blew a fuse , and it still works.
OS
Attachments
It was not you that I was referring to , Carlos has been hounding my threads for a while now with his "suggestions".
I thought you were implying about the lack of a board so fresh into the thread. I think it is better to throw some idea's around before a final version is "released". What devices , mounting constraints ,trading simulations ...all should be explored before finalization.
OS