Why do I have to make up to 15 times when copying Gm:
Why do I have to make up to 15 times when copying Gm:
1. I need the complete sound of Gm. because I love this sound!
2. I need to remove all technical issues when using and causing errors. It's a high-frequency self-inflicting problem, which causes a very bad sound and kills the key components. If you only do it once, you'll think it's great. And you'll say I'm successful - This is a serious mistake!
3. I need to check between PCB schematic and PCB of Gm, and versions of Tl400, 600, 2500 and even Tl500, what's the difference? And I find them very little different.
4. I opened the TL400 and copied the entire PCB and the circuit- leading to almost 95% of the Gm audio output.
5. I have measured and tested on many systems, time and use the dedicated meter Tek AM700. I did it about 4 years ago.
6. After 15 implementation and results achieved:
Gm copied has become the reference sound in my home audio system, and many of my friends.
7. There is a semiconductor solarium competition, in which I participate to help my friends make six different and three of which won the first, second, third, and the other three ranked from: 4. -6. What a surprise!
8. Hanoi Television in Vietnam invites me to film a program on this sound, see here: YouTube
Thank you for all of my sharing for you, if you want to copy GM for yourself then pay attention:
1. Non-1 component values, as well as standard 100%
2. Most important is the PCB and the conductors on the PCB, as well as the connections!
Why do I have to make up to 15 times when copying Gm:
1. I need the complete sound of Gm. because I love this sound!
2. I need to remove all technical issues when using and causing errors. It's a high-frequency self-inflicting problem, which causes a very bad sound and kills the key components. If you only do it once, you'll think it's great. And you'll say I'm successful - This is a serious mistake!
3. I need to check between PCB schematic and PCB of Gm, and versions of Tl400, 600, 2500 and even Tl500, what's the difference? And I find them very little different.
4. I opened the TL400 and copied the entire PCB and the circuit- leading to almost 95% of the Gm audio output.
5. I have measured and tested on many systems, time and use the dedicated meter Tek AM700. I did it about 4 years ago.
6. After 15 implementation and results achieved:
Gm copied has become the reference sound in my home audio system, and many of my friends.
7. There is a semiconductor solarium competition, in which I participate to help my friends make six different and three of which won the first, second, third, and the other three ranked from: 4. -6. What a surprise!
8. Hanoi Television in Vietnam invites me to film a program on this sound, see here: YouTube
Thank you for all of my sharing for you, if you want to copy GM for yourself then pay attention:
1. Non-1 component values, as well as standard 100%
2. Most important is the PCB and the conductors on the PCB, as well as the connections!
Attachments
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The amp I made was using your PCB ! And that is working fine after it has been in use for 4 years or so.
In the schematic R33 is wrong if you use +/- 80V . It should be 330 Ohms. The PCB I showed was somthing I am working on, but not produced yet.
Come on, stop.
With all due respect, I think you guys are wasting the space discussing meaningless things, while I am kind of furious about English that WE DON'T UNDERSTAND.
Please make some distribution, share either schematics or even GERBER files, not just showing pictures telling how big it is, and how rich you are to build these monsters.
With all due respect, I think you guys are wasting the space discussing meaningless things, while I am kind of furious about English that WE DON'T UNDERSTAND.
Please make some distribution, share either schematics or even GERBER files, not just showing pictures telling how big it is, and how rich you are to build these monsters.
Yes, I think if you can do that, the DIY community would be happy.
Come on, just please show us.
What EXACTLY are talking about? GR?
I think you're saying GB.
What I see is that you are not willing to share technical details, just showing off your monsters. I know this in common is VN and China forums, though. Because there are commercial issues.
However, I think DIYauidio is a community that SHAREs openly, especially this is located in a technical area.
What benefits do you contribute to the community?
If the answer is NO, then stop occupying the space, this is a BUILD thread.
I think you're saying GB.
What I see is that you are not willing to share technical details, just showing off your monsters. I know this in common is VN and China forums, though. Because there are commercial issues.
However, I think DIYauidio is a community that SHAREs openly, especially this is located in a technical area.
What benefits do you contribute to the community?
If the answer is NO, then stop occupying the space, this is a BUILD thread.
Attachments
Hi erikovsky!
Yes thank you for your suggestions.
I feel hurt and humiliated because: you said I was Chinese!
Why can not I provide Goldmun's exact schematics because:
1. It is my copyright issue and my respect for Goldmun
2. Do you know what is a NDA ?
3. Five years ago, I had a topic about GM, but diyaudio deleted them and did not allow, because of copyright issues.
*** If you have a standard circuit board, or some Vietnamese to send you the Gm circuit diagram, please share it to the members. I have it all but I can not do this! **
Thank you, and I will not join you on this topic anymore, hello
I am extremely grateful to you!
quanghao
Yes thank you for your suggestions.
I feel hurt and humiliated because: you said I was Chinese!
Why can not I provide Goldmun's exact schematics because:
1. It is my copyright issue and my respect for Goldmun
2. Do you know what is a NDA ?
3. Five years ago, I had a topic about GM, but diyaudio deleted them and did not allow, because of copyright issues.
*** If you have a standard circuit board, or some Vietnamese to send you the Gm circuit diagram, please share it to the members. I have it all but I can not do this! **
Thank you, and I will not join you on this topic anymore, hello
I am extremely grateful to you!
quanghao
Please see my previous post with the service manual from Goldmund:
http://www.diyaudio.com/forums/solid-state/174468-amplifier-heard-154.html#post2499044
As I have not made NDA with Goldmund
http://www.diyaudio.com/forums/solid-state/174468-amplifier-heard-154.html#post2499044
As I have not made NDA with Goldmund
Attachments
Hey Guys,
I am sharing this schematic. This is a larger power rating model.
Enjoy!
Eric
A thing that puzzles about the schematics. The regulated PSU for the front end only puts out +/- 60V , but in the input schematic it says it needs +/- 80V witch also must be the case for full drive to the output