Simplistic NJFET RIAA

[Salas]

I will be testing with modded denon 103. There is dynavector DVX1S waiting on the wing.
Quan

I knew of XV-1S flagship category cart, that one you mention I don't know it.
Anyway both the Denon and such carts will be 0.3mV or plus so the high sensitivity build set will do fine. Loading can sometimes be best at more than recommended by manufacturers.

 

[Salas]

Yes China made @ 25$ is prob. not the best money can bay.
I thought about borrowing a LCR meter calibrated from job but with my long projects its nice to have one at home.
Will take the tester into work and test it up against a calibrated tester

If you will note down the deviations for some ranges like tens of nF, tens of uF etc. you could guess better absolute values too, given it shows some measure of repeatability on its own readings, at least now. For temp delta or long term stability, only God knows.

 

[quan]

I knew of XV-1S flagship category cart, that one you mention I don't know it.
Anyway both the Denon and such carts will be 0.3mV or plus so the high sensitivity build set will do fine. Loading can sometimes be best at more than recommended by manufacturers.

Yes Salas, my typo error again. The XV-1S recommended loading is >60R so i would just use the 100R for a start and take it from there.
Quan

 

[Salas]

Its a good plan. There was one I had been listening through a Boulder 2008 at an audiophile's few year's ago and we were changing loads on a plug in card that pre has for soldering loads, but I can't remember the value we ended up for it. So do investigate.

 

[Salas]

...Having a flashback. It maybe was a toss between 150R and 180R.

 

[quan]

...Having a flashback. It maybe was a toss between 150R and 180R.

Will try with SF. I have heard in other system using Ypsilon SUT(loading with 100R) and Herron audio sounding fantastic.
Quan

 

[skouliki]

Is it important to match 2sk117gr IDSS between channels? Is there any benefit?

 

[Salas]

Fairly matched so to have about equal currents through LEDs etc. Unless you compensate in the LEDs Vf. Makes it simpler to do it on Idss level. 0.5mA dif won't manifest much for instance.

 

[skouliki]

Thanks Salas

 

[quan]

Hi Salas, can you confirm TP2 on the board?. I can see TP1 clearly but TP2 seems to be next to the row of resistors. Is R4 leg the right one?
Quan

 

[quan]

Found the answer on the guide so please ignore previous post. Should have read it better . Sorry guys

 

[Salas]

Looks like you are adjusting?

 

[Salas]

C3's input side shows the same voltage as TP2 if its handier 4U to reach by the way.

 

[quan]

My build is almost there, putting it in the case then will turn it on for the first time thus checking the start up procedure. Thanks .
Quan

 

[Erlend Sæterdal]

Waiting for XLR 5 pin For the power cable.

 

[Salas]

OK, we will be learning from you two soon then. Good luck in testing.

 

[Marra]

I connected my Simplistic into my system this morning and music came out of the speakers.Feeling rather pleased with myself I walked towards the speakers only to realise that the left channel was distorting.It sounds like crinkling paper but lower in tone.This is the board that biased up properly after I'd reorientated the led's.

 

[Salas]

What happens if you will swap the channels as they come from the TT? Then as they go out to pre? Do that first to confirm that the channel needs servicing and we will think about it.

 

[Marra]

Thanks I will do that this afternoon.

 

[Turbon]

This might show up as swedish - change to your prefered language and hopefully it will show the same products.

Vishay Metal Film Resistors - Through Hole | Mouser

Regards

Ok, I'll give up... I'll pay 25% commision if someone who finds the gathering of the perfect components fun or amusing. I'll bet it's not only me getting frustrated - whenever I find the right value I have to buy them in thousands. So, could some of you wizards set up an GB for the passives at least exept for the parts in TB's minikit. So, gather 4 kits and yours would be paid for. Of course the receivers pays for shipping and PP fees.

Now - go for it!

Regards