Goldmund Mods, Improvements, Stability

[wahab]

So far, i didn t see any improvement over the original goldmund,
and this is due to the base schematic itself.

Improving that beast might probably lead us straight to Elektor s LFA amp
which contain almost all the refinements that are generic of this topology..

 

[Krisfr]

So far, i didn t see any improvement over the original goldmund,
and this is due to the base schematic itself.

Improving that beast might probably lead us straight to Elektor s LFA amp
which contain almost all the refinements that are generic of this topology..

Then you have BUILT and Listened to the Schematic?

 

[BMW850]

You cannot do sound improvements because there is no “Goldmund Amplifier clone” to listening.

Rudy

 

[wahab]

Then you have BUILT and Listened to the Schematic?

All the dual serial differentials i had the chance to listen
to using my unvariable speakers did sound very well,
from the JVC AX series to Elektor s LFA..

I suppose that Goldmund s one doesn t make exception.
Also, Hitachi s mosfets are surely a big part of this latter s
claimed sound quality..

 

[Krisfr]

Keantoken:

Is there a "regular regulator" feeding the Shunt Regulator?
Is the Shunt Finished "FINISHED" or do you have more testing to do?
Is there any problem driving 4 outputs per rail?

Thanks

 

[mace1337]

Keantoken:

Is there a "regular regulator" feeding the Shunt Regulator?

Thanks

"pre-tracking" regulator sounds so much cooler than "regular" regulator. 😛

 

[Krisfr]

IS that the CORRECT terminology for it? I think the power supply is going to be more complex than the AMP😉😉😉

I am just wanting to get THIS built...

Thanks

 

[mace1337]

I think so, at least that's what it's called on Jung-type superregs. 🙂

 

[parb]

So far, i didn t see any improvement over the original goldmund,
and this is due to the base schematic itself.

..

gentle reminder. the original purpose and objective is to see what twenty years of electronic research and experiences can do to this circuit. you postulate that nothing can be done, i say lets continue and see where it leads us. i For one think the journey is just as interesting as the result, and im not convinced by the argument that there has been no improvement in electronics that could improve this circuit.

 

[dadod]

I dont know why I have got a filling that for Nico only good amp is his amp.
dado

 

[Luke]

Before you can improve a design you need to identify the weaknesses, reengineer around these weaknesses and then evaluate to see if you have met your objectives without adding more weakness to the overall design.
Withour trying to be funny or reading 23 pages, what are the weaknesses we are trying to fix?
Also intersting comments Nico made about the psu. I think this is one arae the Goldmund team put alot of emphasis IMO.

 

[Lazy Cat]

OK keantoken if you think 10-22 k VAS load would decrease performance significantly than maybe rather use this GND anchor which would do no harm to performance but only improve stability.😉

 

[Lazy Cat]

I kind a like slow progresion of this thread, it gives a room for improvements, investigations, ... yeah quality takes time. 🙂

 

[AndrewT]

Lazycat,
why post a 5.55Mpixel schematic when a 100kpixel can do the job? If you take the time to do it right.

 

[Lazy Cat]

Time consumption's totally insignificant, quality is only what it matters ... 😀

 

[Krisfr]

And Honestly I can not see the LARGE one, when blown UP some of the lines disappear.

Use thicker lines or SOMETHING

Thanks

 

[AndrewT]

Time consumption's totally insignificant, quality is only what it matters ... 😀

yes, quality matters.
The reader should be able to see the information clearly.
The clarity is a measure of the quality.
On that basis you failed completely.

 

[Lazy Cat]

Apologize, but when I open the attachment it is clear and lines are visible also at maximizing the image. I don't see any problem with this image honestly speaking. 😕

Next time will do better, promise. 😉

 

[AndrewT]

I have been honest.
I can't see the information clearly.
When it is thumbnail, it misses out too much.
When it is expanded to screen size, fine lines get missed out.
When it is expanded to full size, I cannot see what information it is trying to present. I would need about 6screens @ 1.3Mpixels to see the whole.
It's too ******g big !!!!

 

[Lazy Cat]

OK, let's try this one. 🙂

PNP and GND connection added. 😉