Threshold NS10 Lineamp PCB

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rumors said:
Hello,

it is own necessary U1?
I have modified the schematic :

Thank

Yes it is. The opamp locks the output at 1/2 supply voltage, and acts like a dynamic DC feedback path that bias up Q1 at the same time. No need to worry about it, the circuit sounds fine even with that opamp.... (or partly because of )
BTW with the output at 12V, this is probably a good place to drop in a Black Gate NP, since they are rumoured to sound best with some voltage over them, right Tony😉

🙂

BTW These chassis, that I am working on, will become the home of Le Cheff's masterpiece😎
They are standing right on their faces😉
 

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steenoe said:
really fast:bigeyes:

😎

Very fast indeed ... In the time It takes me to copy Tonys little board, you just build 2 complete mono amps ...
🙄

So ... The new version of the NS10 board.
I corrected some components orientation issues (my bad, not Tonys)
Still double sided, this time with just Top side ground plane and GRD traces also on the top (is it a good idea?).
BTW : Do you want the GRD plane being connected to the SIG GRD trace at some point ? Where?
(As an example I put a Jumper with thermal pad near DC input connector for this purpose.)

At your service

Manu

Twitchie : You're greedy boy ... but you will be first on the list .... 😉
 

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:angel:

Thank you Manu, I'm just making sure I will have something to build if I ever find myself with some free time on my hands. :smash:

Has anyone compared the NS10 to the P1.7 (Aleph)? It sounds like the "Man with 10 000 amps" (Steenoe) is using the NS10, so it must be special :cloud9: :yes: :scratch2:

diyAudio - more emoticons than I can use
diyAudio - more projects started than I can finish
 
No need to thank me.

Tony is concocting a very nice and splendid, and very compact new shuntreg board ...
Soon we will be all happyest camper ...

Twitchie : If you're boring, you could visit the house of Glenn Gould in the Beach and, in my name, make a deep bow ...
my master in music understanding ...
Greatest of all ...


I would trust Mr. (at least) 10.000 DIY amp's taste ...

Manu
 
Manu said:



BTW : Do you want the GRD plane being connected to the SIG GRD trace at some point ? Where?
(As an example I put a Jumper with thermal pad near DC input connector for this purpose.)


That’s a very good question, more than most think.

Even thou on my layout is connected I would usually not do it, that’s because we were supposly following Nelson’s design of those past days but really don’t know if he did it this way…. So…

Today I keep input signal ground separated from the general ground of the circuit and join them at the star Grd. together, in this case, with R2.

But that’s my flavor
😉
 
Manu , my humble xperience ;

lookie lookie on Shunty pcb - you have two possible bridges for connecting gnd plane and power gnd ;
preferred one is at power input side ........

but - NB that bridge is for power gnd and gnd plane connection , not audio gnd in any case ....
 
That must be some kind of telepathy (soul transmission without the need of PSU -
(sorry , rakija is useful in this case, but I digress)
... or known as Tapioca, but I really don't know why)
Anyway I was just thinking of you ... wanted to ask what you think ...
I, oeuf corse, looked at shunty pcb, and so I thought it were alright to put Jumpy at DC input.

But as you know, I am just a ...

Manu
 
Antonio,
only kidding, slow-driving through Mexico in a classic convertible with 2 nuts and a guide would be a Huck Finn wet dream.
(long time ago me once did the middle part of the P-A, but that was with a real basketcase Puerto-Rican at +60mph)

Anyone of you considered comparing it with a fetty version, or is that sac(k)-rilege ?
 
jacco vermeulen said:
.....

Anyone of you considered comparing it with a fetty version, or is that sac(k)-rilege ?


me thinks that Antonio already tried ( somewhere in time of first two NS10 threads ....... long time even before Papa made NS10 :rofl: ) ......

at least tried Jfet as first skinny

just to remember - Steen my crazy Danske man had one major sin in that time ..... trying shunt reg proto , without 'nuff patience ( "something is buzzing ....... " )
 
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