Goldmund Wiki and build 2017

[Sensation45]

My Goldmund amplifier from 2013 , PCB layout by me !

Alex

Very nice..

 

[Sensation45]

Q2 Q3 Q9 Q10 Has anyone tried the mje340/50?

 

[nfsgame]

KSE is the Fairchild-noting of the MJE-equivalent. Like KSC for 2SC...

 

[Sensation45]

Thank you nfsgame.

I have the original Toshiba 2sc3421 2sa1358, I want to use them.

 

[Sensation45]

KSE is the Fairchild-noting of the MJE-equivalent. Like KSC for 2SC...

My Goldmund transistors are mpsa42/92. I am attaching the Goldmund Umun schematic..

 

[Sensation45]

view schematics

 

[Sensation45]

KSE is the Fairchild-noting of the MJE-equivalent. Like KSC for 2SC...

I will be using 2sc4883 2sa1859 as vas driver.

 

[Silvio Novais]

My Goldmund amplifier from 2013 , PCB layout by me !

Alex

Alex! From 2013 to 2022 do you think it is necessary to make any updates?
What are the electrical specs of your power supply?

 

[nfsgame]

I will be using 2sc4883 2sa1859 as vas driver.

They are great devices - if you use them right. They're great as drivers in an EF2/EF3. Some are using them as cascoding-devices in combination with low Cob/Cre semis in the VAS (even Marantz in some bolide-style integrated amps). But personally I wouldn't use them plain in this specific VAS. Even the 340/350 are better for this here.

BTW: Your 2SC3421/2SA1358 are now called TTC004/TTA004 with the same specs and are widely available through the big distributors... No need to buy some out of questionable sources...

 

[Sensation45]

They are great devices - if you use them right. They're great as drivers in an EF2/EF3. Some are using them as cascoding-devices in combination with low Cob/Cre semis in the VAS (even Marantz in some bolide-style integrated amps). But personally I wouldn't use them plain in this specific VAS. Even the 340/350 are better for this here.

BTW: Your 2SC3421/2SA1358 are now called TTC004/TTA004 with the same specs and are widely available through the big distributors... No need to buy some out of questionable sources...

Thank you nfsgame In the diagram 2sc3421 2sa1358 these are also available I am undecided

 

[Sensation45]

 

[Sensation45]

I will use Mosfet power transistors 2sk176 2sj56 and I have 1 pair for each channel.

 

[Sensation45]

 

[Silvio Novais]

View attachment 1091121

Are the ECF 10N20/10P20 compatible with this project?

 

[Sensation45]

Are the ECF 10N20/10P20 compatible with this project?

Compatible

 

[Sensation45]

My 500va 2x43v ac transformer for Goldmund 29

 

[Sensation45]

Onkyo a 9511 transformer supply circuit I used in my amp tests 200w 2x32v ac 2x10000uf elna capacitor

 

[Sensation45]

2013'teki Goldmund amplifikatörüm, PCB düzeni bana ait!

Alex

 

[saumon35131]

hello,
I have several questions about the GM29.
What does the HM3S reference correspond to?
Is it a class A or AB originally?

Thank you

PS : I didn't know if I should open a new thread.

 

[trinhanhtu]

goldmund telos 1000 service manual