B1 with Korg Triode

[Rewind]

Ordered one.

 

[sov]

Would F4 be a good match with B1 Korg Nutube and sensitive speakers?

 

[Zen Mod]

ultrasensitive

 

[sov]

100+ dB?

 

[Rewind]

One of my horn channels then. 110dB.

 

[Zen Mod]

One of my horn channels then. 110dB.

second reply to sov

#184

 

[wineds]

I have ordered B1 BUFFER WITH KORG TRIODE PCB + FAIRCHILD JFETS from the DiyAudio Store. Is there a BOM as yet? Also I searched the thread but what are the power requirements? Looks like 24v but at what current?

 

[RafaPolit]

There's a nice First Watt article with all you answers:
http://www.firstwatt.com/pdf/art_diy_nutube_preamp.pdf

Hope it helps,
Rafa.

 

[carsten.witt]

@yoshida,
i've got an answer, it hasn't turned out as i hoped. Thanks again!

Here ist the answer: "We regret to inform you but this product is not for international customers, available only for the domestic market."

 

[Rewind]

Then why did they take my money? I am getting mine shipped to Norway, just like my nutube that I bought from the DIYaudio store as well.

 

[sov]

Bought mine at RS Components. They stock SP1 and have fast delivery.

 

[wineds]

There's a nice First Watt article with all you answers:
http://www.firstwatt.com/pdf/art_diy_nutube_preamp.pdf

Hope it helps,
Rafa.

Thank you! Silly me to have missed that.

 

[Soundhappy]

B1 Buffer with Korg Triode PCB + Fairchild JFETs – diyAudio Store

Available new B1Triode cute boards + jfet's + resistors

 

[cjfrbw]

Looks like the new board has twice as many JFETs over the Christmas board plus the R1 resistors ??. What do the R1 resistors do?

 

[Soundhappy]

One more time Mr. Pass article bring all the answers to Your new pcb version questions

http://www.firstwatt.com/pdf/art_diy_nutube_preamp.pdf

 

[tsmith1315]

Notice the difference: DSG, DGS

 

[Nelson Pass]

Allows for deluxe use of Toshiba Jfets.

 

[Wodgy]

Does anyone have any recommendations for how best to jury-rig a simple socket for the Nutube that works well with the B1 PCB? There don't appear to be any commercial sockets for the Nutube.

(I know it has a phenomenally long life, but if one tube turns out to be excessively microphonic it would be nice to be able to easily swap it out.)

 

[Zen Mod]

this thingie is already fragile enough and even thinking of pushing it in socket made me nervous

 

[cjfrbw]

One more time Mr. Pass article bring all the answers to Your new pcb version questions

http://www.firstwatt.com/pdf/art_diy_nutube_preamp.pdf

OK, I got it. Grand traditional Toshibas in the K slots and R1 is shorted with a wire if you can obtain the unobtanium in matched pairs.

The kit Fairchilds are specific, different Q1 and Q2 for the J slots and the included R1 resistors are necessary.

I have to make sure I plug those suckers into the right slots.