B1 with Korg Triode - Page 151

qwertyl · 13th February 2019, 09:26 AM

Quote:

Originally Posted by Rewind

Wow, thanks for a detailed answer. So now they are $250 preamp ornaments?

Yes, but who knows where the future takes me

Centurion53 · 13th February 2019, 01:12 PM

Thanks tsmith1315 for the reply. Sage advice indeed. I'm new to this forum and there is such a vast amount of material here that it's easy to fall down rabbit holes

.

Soundhappy · 13th February 2019, 04:57 PM

audioXpress Korg Nutube 6P1 article from P. Millett

https://www.audioxpress.com/files/attachment/2672

Eric · 13th February 2019, 06:35 PM

Thanks for posting Pete's article! Looking at this again, I keep seeing the same data: Vf=0.7v and If = 17mA.

My measurements show that with a 24.0v regulated supply, my Nutube is running at Vf = 0.704v and If = 18.9mA being drawn across the 475R for both channels. Is this a long-term problem? It seems that I'm outside of the SOA...

avdesignguru · 13th February 2019, 09:49 PM

Quote:

Originally Posted by qwertyl

Yes, but who knows where the future takes me

Jensens would be most useful in inverting the polarity of the B1 Korg outputs to avoid having to invert the loudspeaker connections.

Bassivus · 13th February 2019, 09:53 PM

Quote:

Originally Posted by avdesignguru

Jensens would be most useful in inverting the polarity of the B1 Korg outputs to avoid having to invert the loudspeaker connections.

That was my consideration... I could salvage a pair of JT-11-BMCF to use

R-K Rønningstad · 14th February 2019, 04:37 PM

http://www.jensen-transformers.com/w...-112p-2hpc.pdf

Rewind · Yesterday, 06:18 PM

Got my Nutube från the DIYAudio shop. It took 15 days to Norway.

qwertyl · Today, 10:50 AM

A few boards + nutubes posted today: see here

mcgillroy · Today, 04:12 PM

Thx qwertyl!

13th February 2019, 04:57 PM	#1503
Soundhappy diyAudio Member Join Date: Oct 2012 Location: Montpellier near Mediterranean Sea France	audioXpress Korg Nutube 6P1 article from P. Millett https://www.audioxpress.com/files/attachment/2672 __________________ class A amplifiers with full range speakers sings like angels in heaven

13th February 2019, 06:35 PM	#1504
Eric diyAudio Member Join Date: Nov 2000 Location: Central PA, USA	Thanks for posting Pete's article! Looking at this again, I keep seeing the same data: Vf=0.7v and If = 17mA. My measurements show that with a 24.0v regulated supply, my Nutube is running at Vf = 0.704v and If = 18.9mA being drawn across the 475R for both channels. Is this a long-term problem? It seems that I'm outside of the SOA... __________________ My DIY Basement Theater, Aleph-X Amps, LDR based BA-3 pre, Pearl II, highly modded Technics SL-1200, F4, M2, Aleph-J, MoFo, a40, several ACAs, FHXL, Tang Band 1772 bass-reflex

Today, 10:50 AM	#1509
qwertyl diyAudio Member Join Date: Apr 2003 Location: UK	A few boards + nutubes posted today: see here __________________ Builds: M2, Aleph J, B1 Korg, Pearl II, BA-3 Pre, BA-3 Power, F4, Sony VFET, 300B SET, Audio Note AN-E

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13th February 2019, 01:12 PM	#1502
Centurion53 diyAudio Member Join Date: Dec 2018 Location: Albuquerque, New Mexico	Thanks tsmith1315 for the reply. Sage advice indeed. I'm new to this forum and there is such a vast amount of material here that it's easy to fall down rabbit holes .

14th February 2019, 04:37 PM	#1507
R-K Rønningstad diyAudio Member Join Date: Jan 2006 Location: Oslo	http://www.jensen-transformers.com/w...-112p-2hpc.pdf

Yesterday, 06:18 PM	#1508
Rewind diyAudio Member Join Date: Jan 2009 Location: Oslo	Got my Nutube från the DIYAudio shop. It took 15 days to Norway.

Today, 04:12 PM	#1510
mcgillroy diyAudio Member Join Date: Aug 2012	Thx qwertyl!

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