NS-10 schematic

[Zen Mod]

Master?

 

[Nelson Pass]

I don't have an NS10 schematic on me, but I can recreate the
essentials from memory - when I get some time.

 

[Zen Mod]

I don't have an NS10 schematic on me, but I can recreate the
essentials from memory - when I get some time.

OK,Master ;
just take your time - and do it just for fun.
I'm not desperate regarding NS-10,I'm just curious in (anticipated ) elegancy........
hehe-if my English is good enough to anybody know what I mean.....

 

[Nelson Pass]

I drew the attached this morning.

😎

 

[Zen Mod]

I drew the attached this morning.

😎

😀

 

[lumanauw]

What is NS10? Is it driver card or preamp?

 

[mastertech]

Mr Pass thanks


cheers

 

[Zen Mod]

What is NS10? Is it driver card or preamp?

battery charger

 

[jacco vermeulen]

Lumanauw ,

the NS-10 was the first pre-amp made by Threshold, late 70s.
Second product after the first Stasis power amplifier

 

[Zen Mod]

who's that girl 😉

Master,can we get some resistor values (or hints) in exchange for this little pic ?
and,yeah,is phono preamp equally interesting?

 

[jacco vermeulen]

Oh No, all that hair again !!
Nice tie though.

 

[Zen Mod]

hehe-just spot that "ultra-A class" term
tnx to God that Master is engineur ,not PR type of person

 

[jacco vermeulen]

Did Mr Besné design the Threshold logo ?
From what i gathered he started as an industrial designer.

 

[lumanauw]

In picture in post #10, it is stated this preamp is non-feedback type.
Q1 and Q2 are bipolars, Q2 doesn't have RE degeneration, so the gain must be big.
R1 and R3 is forming feedback divider/gain factor. So, this CCT is feedback, not non-feedback.
Am I wrong here?

 

[Zen Mod]

In picture in post #10, it is stated this preamp is non-feedback type.
Q1 and Q2 are bipolars, Q2 doesn't have RE degeneration, so the gain must be big.
R1 and R3 is forming feedback divider/gain factor. So, this CCT is feedback, not non-feedback.
Am I wrong here?

nope ; you're right

ultra class A and non feedback are most used tools in creating super fine audio fog
😎
that's why we have Master here- to jump above all this mumbo jumbo stories and to have opportunity to look in "real life " circuits

 

[Nelson Pass]

Did Mr Besné design the Threshold logo?

He did.

In picture in post #10, it is stated this preamp is non-feedback type.
Q1 and Q2 are bipolars, Q2 doesn't have RE degeneration, so the gain must be big.
R1 and R3 is forming feedback divider/gain factor. So, this CCT is feedback, not non-feedback.

The non-feedback portion of the circuit was the moving coil
gain stage. The ultra-class-a referred to the much higher than
usual bias found on the transistors, particularly the input stage.

 

[TJ]

how about the sound compare to the current (PassLabs ) pre amp ?

 

[Cobra2]

SL-10

-the next in line, SL-10, is it much different from the NS-10?

Arne K

 

[Nelson Pass]

Re: SL-10

-the next in line, SL-10, is it much different from the NS-10?

If you navigate to the directory

www.passlabs.com/np/

you will find the SL10 schematic, where you will see a cascoded
differential front end, followed by a circuit similar to the NS10.

😎

 

[Cobra2]

Thanks!

-will (maybe) put my hands on one soon...

Arne K