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Old 3rd August 2010, 10:42 AM   #1
diyAudio Member
 
Join Date: Sep 2005
Default Help wanted from DIY audio forum guys from China , Hong Kong or Taiwan!

Hello

I would like to ask some help DIY audio forum member from China or Hong Kong.
I would like to contact with these guys on HKDG forum , to get some information about these amplifier , where I can get these PC board etc .
I would be interested to get some information and PC boards.
?Goldmund?? - DIY ? ? ? - HKDG - Powered by Discuz!
Thank you very much .

Greetings
gabor

Last edited by gaborbela; 3rd August 2010 at 10:45 AM.
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Old 4th August 2010, 12:17 AM   #2
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Here you go, theres a whole thread about this amp here on Diyaudio.

http://www.diyaudio.com/forums/solid...sym-clone.html
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Old 4th August 2010, 12:55 AM   #3
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Sorry that is not the same amplifier .
Please take a look , lateral mosfet power transistors etc .
Jim's Audio is a Symasym clone nothing else! They can call that how they want it. If I call the Trabant BMW it would be still a Trabant !
I do not say that is a bad amp but I'm looking for something else ..
Please look at the schematic I posted .Heaven and Earth the difference between the two amp!
Thank you
Greetings
Attached Images
File Type: jpg GM%20CLONE%20SCH.jpg (146.4 KB, 1392 views)
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Old 4th August 2010, 05:16 AM   #4
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Quote:
Originally Posted by gaborbela View Post
Sorry that is not the same amplifier .
Please take a look , lateral mosfet power transistors etc .
Jim's Audio is a Symasym clone nothing else! They can call that how they want it. If I call the Trabant BMW it would be still a Trabant !
I do not say that is a bad amp but I'm looking for something else ..
Please look at the schematic I posted .Heaven and Earth the difference between the two amp!
Thank you
Greetings
Its not the same amp because it has been tweaked and changed but looking at the board it sure seems it was designed to take those mosfets, you could try asking linuxguru he would be able to tell for sure. Theres also another user here called Anadigit that says he has built a clone of the goldmund circuit from the plans given by a chinese cloner.
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Old 4th August 2010, 05:44 AM   #5
CBS240 is offline CBS240  United States
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Join Date: Aug 2005
Location: K-town
Quote:
...Jim's Audio is a Symasym clone nothing else! They can call that how they want it......
Yup, there are very few new ideas out there. Seems like more and more people are trying to re-invent the same ol' ****. It's all basically been done before, right?

Trying and proving or dis-proving new ideas is what makes the endeavor of DIY audio entertaining and fulfilling, at least for me. For example, the active common mode feedback, and common mode error correction I have been using for the last couple years, I have discussed in this forum but generating very little interest. It is a wonderful way to create a XLS signal from SE source, and also create a very stable VAS bias, leading to a very stable OPS. I'm coming to the conclusion that if it has not been done for 30+ years, people assume it does not work. IMHO, their loss. I suppose I will just continue my work with these ideas in seclusion. Suits me.
__________________
All the trouble I've ever been in started out as fun......
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Old 4th August 2010, 07:49 AM   #6
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Join Date: Sep 2005
Hello
I could write about ANADIGIT and you would be shocked if you know the truth!
"Given by Chinese cloner" the biggest lie in the forum !
I do not want to go into the details > You should be able to get the idea . He was selling his kit $95US channel another post.
I wrote I'll buy it and $125US ask from me .
He said he help me to contact the Chinese guy , so he did .But one of the letter was signed from the Chinese guy ANADIGIT!
Do you get the idea ????????
These stink , fishy smell .
Many people use the forum to fill up his pocket , or take advantage on guys who really interested on new stuff .
Please READ THESE LETTERS BETWEEN ME AND THE CHINESE GUY!
I'll attach at the next post .
Read carefully!

These is incredible to me .
Greetings

Last edited by gaborbela; 4th August 2010 at 08:05 AM.
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Old 4th August 2010, 08:15 AM   #7
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Here is it!

RE: GoldmundSaturday, July 31, 2010 11:27 PM
From: "watchara saladkaew" <scalaraudio@hotmail.com>Add sender to ContactsTo: gaborlaszlo2@yahoo.ca
Hi,
I don't have a kit I have only populated and tested board.
Also without schematic because I don't want anyone clone it again.

I'll attach my pictures next email (camara empty battery)

Thanks
Anadigit


--------------------------------------------------------------------------------
Date: Sat, 31 Jul 2010 11:01:36 -0700
From: gaborlaszlo2@yahoo.ca
Subject: RE: Goldmund
To: scalaraudio@hotmail.com

Hello

How much is the Gamut kit ?
Of course I ask the better one .
Please let me know .
Any picture from the PC board .

Thank you very much
Greetings gabor

--- On Sat, 7/31/10, watchara saladkaew <scalaraudio@hotmail.com> wrote:


From: watchara saladkaew <scalaraudio@hotmail.com>
Subject: RE: Goldmund
To: gaborlaszlo2@yahoo.ca
Received: Saturday, July 31, 2010, 5:44 AM


Hi,
I have seen your schematic as long as I remembered.
I hope will lucky with your amplifier.

I also have GAMUT D200 MKIII and M250 clone kit.

Thanks
Watchara
-------------------------------------------------------------------------------------

--- On Sat, 7/31/10, watchara saladkaew <scalaraudio@hotmail.com> wrote:


From: watchara saladkaew <scalaraudio@hotmail.com>
Subject: RE: Goldmund
To: gaborlaszlo2@yahoo.ca
Received: Saturday, July 31, 2010, 12:16 AM


Hi,
Sorry I can't sell PCB and Jfets because it's my JOB is not my DIY.
I calculated and set them each channel (I can't separate them)

I also used vishay draloric smd in this PCb, too

I can sell only PCBs if you order me more than 20 Pcs (350SUD) because I have to find other parts with myself and matched them again.

Do you want other model ? I have MBL8001AM cloned.

Thanks
Watchara


--------------------------------------------------------------------------------
Date: Fri, 30 Jul 2010 05:48:59 -0700
From: gaborlaszlo2@yahoo.ca
Subject: RE: Goldmund
To: scalaraudio@hotmail.com

Hello

The main reason why I only would like to get PC board I almost has all the parts at home .
I made some pictures so you can see it .
It would be a waste to buy all the parts again and I have the at home .
BC 100uF 100v I have 12Pc
Orig Japanese Hitachi (not Renesans wich is not so good as Hitachi , I tested)
MPSA42 & 92 I have 50PC each.
Only I would need the PC board and two JFet .
If ever you will have just PC boards please let me know .
Thank you

Greetings gabor

--- On Fri, 7/30/10, watchara saladkaew <scalaraudio@hotmail.com> wrote:


From: watchara saladkaew <scalaraudio@hotmail.com>
Subject: RE: Goldmund
To: gaborlaszlo2@yahoo.ca
Received: Friday, July 30, 2010, 12:51 AM


Hi,
I sold to many DiyAudio users such as
analogguy : movieandmusiclover@
rubydac : rubydac@
cloneforlife : cloneforlife@
phonixaudio@

I sell only populated PCB because I don't like to answer any question if it wasn't work when they're solder by themself
All model which you refered to are my collection, too

Sorry if I couldn't sell you only PCB.

Thanks
Watchara


--------------------------------------------------------------------------------
Date: Thu, 29 Jul 2010 21:31:33 -0700
From: gaborlaszlo2@yahoo.ca
Subject: RE: Goldmund
To: scalaraudio@hotmail.com

Hello

I live in Canada .
Do you have any reference , people who bought your kit ?
You know I have a lot of DIY amps: Aleph X ,F5 ,Krell KSA clone ,ProFet, Darlington power amp so on .
I really don't need one more , I need a good one !
I like to build my own amp , use silver solder , the best parts I can afford it etc .
I don't know much about your kit , not even the orig Goldmund .
To me very interesting , I made a lot of research ,they amplifiers are pricey also I think one of the best .
I would be more interested to get PC boards now .To much money I spent on DIY parts .Also I have 10pair orig Japanese Hitachi mosfet , BJT-s etc .
Please let me think about your kit .The reason I have to many amps and parts around me .
Thank you very much for your support , all the information .

Cheers gabor

--- On Fri, 7/30/10, watchara saladkaew <scalaraudio@hotmail.com> wrote:


From: watchara saladkaew <scalaraudio@hotmail.com>
Subject: RE: Goldmund
To: gaborlaszlo2@yahoo.ca
Received: Friday, July 30, 2010, 12:02 AM


Hi,
I have only full assambled and tested model.
My PCB was cloned from original Goldmund mimesis 29
I soldered Hitachi 2SK1058/2SJ162 matched to my board.

They're no need external DC supply because it has bridge diode onboard (high speed with minin size) but if you need to upgrade later I suggest +/- 70V 8A per channel

Mr.Anadigit just sent me your link which you posted in DiyAudio, it is not original Goldmund and they're modified to joking model :-)

1 PCB is mono chennel : 125USD
1 Chassis is mono chennel (included huge heatsink) : 100USD

Where did you lived in ?

Thanks
Watchara


--------------------------------------------------------------------------------
Date: Thu, 29 Jul 2010 20:40:04 -0700
From: gaborlaszlo2@yahoo.ca
Subject: Re: Goldmund
To: scalaraudio@hotmail.com

Hello
Thank you for your letter .
Can you provide more information price , do you sell just PC boards ?
I like your kit, nice, only I dont like Renesans made laterals.
I have some orig Hitachi at home .
Do you provide full schematic, I think about the PS.
Probably there are more (stuff) parts under those cover not just transformers .
Also these is a very nice design , these is also yours to?
Unsub Page sordnagelof?e= 7EHDUxqU3VHhSIEAHX3omUA&m= 2141261&l=0
Missing pictures!!!!!!!!!!!!
Please le me know
Thank you
Greetings gabor


--- On Thu, 7/29/10, watchara saladkaew <scalaraudio@hotmail.com> wrote:


From: watchara saladkaew <scalaraudio@hotmail.com>
Subject: Goldmund
To: gaborlaszlo2@yahoo.ca
Received: Thursday, July 29, 2010, 11:25 PM


Hi,
I just receiived your request from Mr.Anadigit

My goldmund Mimesis29 clone is used original parts and well matched.
200WRMS with +/-70V supply rails.
400WRMS into 4 Ohms
Minimum load are 2 Ohms into 700WRMS

Thanks
Watchara


To understand well you have to start read the letters from the back by date!
I took out some people personal info .
So who is the Chines cloner or ANADIGIT ???


Greetings Gabor

Last edited by gaborbela; 4th August 2010 at 08:36 AM.
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Old 5th August 2010, 10:53 AM   #8
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Thanks for bring this to my attention, I always thought that only sane honest people would come to a forum like this one but in the last couple of weeks I have become aware of some very dubious characters around here.
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Old 5th August 2010, 11:28 AM   #9
wahab is offline wahab  Algeria
diyAudio Member
 
Join Date: Nov 2009
Location: algeria/france
Quote:
Originally Posted by gaborbela View Post
Sorry that is not the same amplifier .
Please take a look , lateral mosfet power transistors etc .
Jim's Audio is a Symasym clone nothing else! They can call that how they want it. If I call the Trabant BMW it would be still a Trabant !
I do not say that is a bad amp but I'm looking for something else ..
Please look at the schematic I posted .Heaven and Earth the difference between the two amp!
Thank you
Greetings
Apart from the lateral fets and the use of one (irrelevant mpsa42)
driver per fet , there s nothing different from a symassym , unless
the latter has no cascoded differential, and yet , it wouldn t change
the global picture...
If you have the hitachi s laterals in stock, there s better ways to
use them that this design which is no more than a variation of
the original hitachi AN , dating back from the late 70s...
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Old 5th August 2010, 01:47 PM   #10
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Wahab you would be very surprised if you built one these amps, they can sound terribly good, depending on how you compensate them.
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