hi guaxian,
Yes I have a DX amp, and I really like the PCB layout you have there. 😀
BTW: I think you posted in the wrong forum.
regards
Yes I have a DX amp, and I really like the PCB layout you have there. 😀
BTW: I think you posted in the wrong forum.
regards
heheheh... do you like your board Greg?
this one was funny🙂🙂🙂🙂🙂🙂🙂🙂🙂
Have you any information about the Dx amplifier Greg?
I suggest you to try one of them.... they are nice!
If you have any need to know something about this amplifier.... search for Greg Erskine home pages....they belong to Greg Erskine and may be helpfull.
Here is the adress, give yourself a chance to know a nice home page:
http://users.tpg.com.au/users/gerskine/dxamp/
regards,
Carlos
this one was funny🙂🙂🙂🙂🙂🙂🙂🙂🙂
Have you any information about the Dx amplifier Greg?
I suggest you to try one of them.... they are nice!
If you have any need to know something about this amplifier.... search for Greg Erskine home pages....they belong to Greg Erskine and may be helpfull.
Here is the adress, give yourself a chance to know a nice home page:
http://users.tpg.com.au/users/gerskine/dxamp/
regards,
Carlos
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Very nice , just one thing ... having drivers with separate heatsinks makes for more unpredictable bias. If room/case is cool , drivers will have X Vbe ,with a Hot case or room this will change.
For a type 2 EF the temperature coefficient of both drivers and outputs should be the same. If they are not , amp will be underbiased in the winter , normal or overbiased in the summer (that is if you originally set the bias in the summer).
I did this .. learned the hard way ..Just something to consider.
OS
For a type 2 EF the temperature coefficient of both drivers and outputs should be the same. If they are not , amp will be underbiased in the winter , normal or overbiased in the summer (that is if you originally set the bias in the summer).
I did this .. learned the hard way ..Just something to consider.
OS
It's very good.
You can quickly scan this feedback.
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You can quickly scan this feedback.
£ÛÍƼö£ÝDX AMP ×°»ú±¨µÀ£¬Yeah£¡£¡£¡ - ·Å´óÆ÷DIYÂÛ̳ - HIFIDIYÂÛ̳ - Powered by Discuz!=
Good idea!
Despite the 10,000++ posts about DX amps (ha! most posts in DX threads are not about DX amps!), there has never been a thread from the DX builders about which one they have and how they like it. Good idea, I hope everyone who has built one will post their comments.
About post #1- do they still make green transistors? Are those vintage? And what is your opinion?? Apparently you built a DX so what do you think? This is almost like trolling....
I almost never built the DX, I did not start until over a year after getting my boards, and the original websites and people were gone. And Carlos had moved on to his next designs and lost interest in this old design. And at that time I thought Carlos was a little...unique? I did not know if I liked him or not. He does not answer questions directly all the time as you can see, but he does answer everything in some manner. For some reason I decided to do a build and wow, I'm shocked at how good this amp is.
Link- DX HRII Amp.
Let me say that this amp is simply wonderful to listen to, has much more power than I ever imagined and will still sound good at low and very low volume. The amp does get a little warmer than I thought it would so heatsinking is a plus.
Of all the amps I have made, and I have made a lot of amplifiers, this is the one I listen to the most.
-It kills the gainclones, and it makes the F5 look like a waste of time.
- No it doesn't sound quite as good as the big ExtremA and Krell class A amps, but its very very close. Its also efficient and I dont need to run class A if I'm just going to listen to some background music or tunes for about an hour. But its not just for background music. That would insult the amp. Its a great amp to sit down and listen to for hours. It most closely mirrors my Krell clone, it has deep bass and crisp highs, but is not as organic overall as the Krell. The ExtremA is more analytical and forward. The DX has a silent background and no noise; its good for efficient speakers as well as inefficient speakers.
It is interesting that hundreds of pcbs were made for Krell KSA 50 clones, Krell KSA 100 clones, Aleph X and SymAsym. Yet how many people made these? There are like 5 working Aleph X's and 2 or so KSA100s, less than 20 KSA 50s. A bunch of SymAsyms and less than 10 "Krills".
DX Corp has very rare PCB offerings and yet still people actually go through the effort to make their own PCBs. It is an indicator as to how good these really are (and to good DX marketing). I think that there was a PCB group buy from germany recently and hope that we will have a lot of new shareholders in DX corp reporting in.
You really owe it to yourself to build a DX and see just how good they are. Please build and get 1 share of common stock in DX corp. I built so many amps and listen to DX the most, it is the best compromise between many design factors. Build DX. Despite the fact that there are no fancy logos or big name designers, no pain when you touch with your finger. No pain in your back when you lift the amp. No pain in your electric bill. No hard to fine exotic parts. No need to play loud to sound good; no fancy audio precision graphs.
Despite the 10,000++ posts about DX amps (ha! most posts in DX threads are not about DX amps!), there has never been a thread from the DX builders about which one they have and how they like it. Good idea, I hope everyone who has built one will post their comments.
About post #1- do they still make green transistors? Are those vintage? And what is your opinion?? Apparently you built a DX so what do you think? This is almost like trolling....
I almost never built the DX, I did not start until over a year after getting my boards, and the original websites and people were gone. And Carlos had moved on to his next designs and lost interest in this old design. And at that time I thought Carlos was a little...unique? I did not know if I liked him or not. He does not answer questions directly all the time as you can see, but he does answer everything in some manner. For some reason I decided to do a build and wow, I'm shocked at how good this amp is.
Link- DX HRII Amp.
Let me say that this amp is simply wonderful to listen to, has much more power than I ever imagined and will still sound good at low and very low volume. The amp does get a little warmer than I thought it would so heatsinking is a plus.
Of all the amps I have made, and I have made a lot of amplifiers, this is the one I listen to the most.
-It kills the gainclones, and it makes the F5 look like a waste of time.
- No it doesn't sound quite as good as the big ExtremA and Krell class A amps, but its very very close. Its also efficient and I dont need to run class A if I'm just going to listen to some background music or tunes for about an hour. But its not just for background music. That would insult the amp. Its a great amp to sit down and listen to for hours. It most closely mirrors my Krell clone, it has deep bass and crisp highs, but is not as organic overall as the Krell. The ExtremA is more analytical and forward. The DX has a silent background and no noise; its good for efficient speakers as well as inefficient speakers.
It is interesting that hundreds of pcbs were made for Krell KSA 50 clones, Krell KSA 100 clones, Aleph X and SymAsym. Yet how many people made these? There are like 5 working Aleph X's and 2 or so KSA100s, less than 20 KSA 50s. A bunch of SymAsyms and less than 10 "Krills".
DX Corp has very rare PCB offerings and yet still people actually go through the effort to make their own PCBs. It is an indicator as to how good these really are (and to good DX marketing). I think that there was a PCB group buy from germany recently and hope that we will have a lot of new shareholders in DX corp reporting in.
You really owe it to yourself to build a DX and see just how good they are. Please build and get 1 share of common stock in DX corp. I built so many amps and listen to DX the most, it is the best compromise between many design factors. Build DX. Despite the fact that there are no fancy logos or big name designers, no pain when you touch with your finger. No pain in your back when you lift the amp. No pain in your electric bill. No hard to fine exotic parts. No need to play loud to sound good; no fancy audio precision graphs.
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lgreen, do you prefer the sound of the DX Amp to the SymAsym's? How different in terms of sonic signature are these two amps?
Thanks.
Thanks.
hehheheh....yeah!...what's the difference?
Yes Ostripper..what is the difference in your point of view..as you have build several amplifiers, alike i did.
I have build both..also i have helped Michael Bittner to produce the first Symassym...about the modern ones i do not know....but the original one is more knew to me as my own face looking at the mirror.
Bittner used to produce high quality recording, using flat microphone (professional) and digital recorder (professional too)..then he uploaded Wave files to me and to John Mateus.... this way we have helped to evaluate...once i found small harsh and have shown Bittner..he fixed that.
Then people started to make several amplifiers based in the Symassym...... Michael gone away and i did the same...because the original was lost in the middle of several options..people have not opened new thread to new option, some of them made this way..others stay in the thread doing other amplifiers with their names or Symassym B Style, or Symassym C style..... these new ones i have not tested..only the last model..and that last i have not appreciated alike the first one Michael Bittner did.
What is the difference?
I would never inform that... say..in an absolute way.... alike to say..this is better than that one.....Bittner is my friend and also i am friend of myself...but others can say.
I have compared amplifiers several times..without absolute winners...i used to say..this one is good for bass..this other one has special sound stage..and so on.
Enjoy both..they are both lovely..build both!
The best i have ever heard, a matter of coincidence, is the one i have tweaked.... Douglas Self Blameless that i am calling Dx Blame ST (because modified a lot)...this is one i could say as an absolute winner....i was lucky not to be stubborn...as i have build the Blameless before and i found it awfull..absolutelly stérile...but i see was because my mistakes during construction, my selection of parts..and also i have made huge modifications (huge because sonic results) in the Blameless.
There's a group buy in Brazil, in the www.htforum.com and there they are providing kits... 2 boards for separated supplies, one board for AC delayed insertion (current sourge protection), 2 boards for protection, transistorized protection to speaker delayed insertion and also for off set....also for thermal drift..and two boards for amplifiers.....but i have asked not to provide outside Brazil... at least for a while..till i have some brazilian opening group buy inside this same forum..to have transparency and show things more clear.....also..brazilian prices are very low compared to international prices...so.... this empty any intention of strangers, from the International audio communitty, our friends, to open a group buy..because if Brazilians enters will offer by a very reduced price that gonna empty the internacional group buy...this is the reason group buy was not created here in this forum.
There are several Dx amplifiers Paulo:
The Dx Amplifier.....the standard, most simple, the first.
The Dx HRII
The Precision 1
The Trust
The DHR Turbo
The Fokker
The Troyan
and the last one, the Dx Blame ST..... i could not know the one you want to know differences.... and they exists... each one of them has it's own sonic signature..the one seems people have enjoyed the must was HRII and now the Dx Blame ST
I am sorry to invade your thread my dear Guaxian.... i am already going away.
thank you,
Carlos
Yes Ostripper..what is the difference in your point of view..as you have build several amplifiers, alike i did.
I have build both..also i have helped Michael Bittner to produce the first Symassym...about the modern ones i do not know....but the original one is more knew to me as my own face looking at the mirror.
Bittner used to produce high quality recording, using flat microphone (professional) and digital recorder (professional too)..then he uploaded Wave files to me and to John Mateus.... this way we have helped to evaluate...once i found small harsh and have shown Bittner..he fixed that.
Then people started to make several amplifiers based in the Symassym...... Michael gone away and i did the same...because the original was lost in the middle of several options..people have not opened new thread to new option, some of them made this way..others stay in the thread doing other amplifiers with their names or Symassym B Style, or Symassym C style..... these new ones i have not tested..only the last model..and that last i have not appreciated alike the first one Michael Bittner did.
What is the difference?
I would never inform that... say..in an absolute way.... alike to say..this is better than that one.....Bittner is my friend and also i am friend of myself...but others can say.
I have compared amplifiers several times..without absolute winners...i used to say..this one is good for bass..this other one has special sound stage..and so on.
Enjoy both..they are both lovely..build both!
The best i have ever heard, a matter of coincidence, is the one i have tweaked.... Douglas Self Blameless that i am calling Dx Blame ST (because modified a lot)...this is one i could say as an absolute winner....i was lucky not to be stubborn...as i have build the Blameless before and i found it awfull..absolutelly stérile...but i see was because my mistakes during construction, my selection of parts..and also i have made huge modifications (huge because sonic results) in the Blameless.
There's a group buy in Brazil, in the www.htforum.com and there they are providing kits... 2 boards for separated supplies, one board for AC delayed insertion (current sourge protection), 2 boards for protection, transistorized protection to speaker delayed insertion and also for off set....also for thermal drift..and two boards for amplifiers.....but i have asked not to provide outside Brazil... at least for a while..till i have some brazilian opening group buy inside this same forum..to have transparency and show things more clear.....also..brazilian prices are very low compared to international prices...so.... this empty any intention of strangers, from the International audio communitty, our friends, to open a group buy..because if Brazilians enters will offer by a very reduced price that gonna empty the internacional group buy...this is the reason group buy was not created here in this forum.
There are several Dx amplifiers Paulo:
The Dx Amplifier.....the standard, most simple, the first.
The Dx HRII
The Precision 1
The Trust
The DHR Turbo
The Fokker
The Troyan
and the last one, the Dx Blame ST..... i could not know the one you want to know differences.... and they exists... each one of them has it's own sonic signature..the one seems people have enjoyed the must was HRII and now the Dx Blame ST
I am sorry to invade your thread my dear Guaxian.... i am already going away.
thank you,
Carlos
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