6N11 tube work at 24V power supply? - Page 2

ericj · 14th October 2011, 07:44 PM

Quote:

Originally Posted by Bigun

The 6N1p is often touted as similar to the 6dj8, especially by ebay sellers. But it's not equivalent.

The 6dj8 is known to work well at low B+, but I doubt that the 6n1p works anywhere near as well.

A better choice, and a real equivalent to the 6dj8 is the 6n23p. Not sure if it's pin compatible with the 6n1p though.

Well I did say 'similar'.

I agree that the 6n1p likes a lot more voltage than the 6dj8 or 6n23p, and that the 6n23p is the true russian 6dj8.

AFAIK the 6n1p and 6n23p are pin compatible, meaning that they both have the same slightly different heater configuration vs. 6dj8 types. Always check datasheets and wiring diagrams when swapping tubes.

I have yet to see curves for the 6n11, but the implication I've seen is that it's supposedly a chinese 6n1p.

Zibi · 14th October 2011, 08:36 PM

VR2XMQ - Steve's Blog AF through SHF: Indeed 6N11 Tube Class A Headphone Amplifier Vs. Qinpu Q1 + Indeed L-top 6N3 Buffer Amplifier.

alfiax · 14th October 2011, 09:37 PM

I have yet to see curves for the 6n11, but the implication I've seen is that it's supposedly a chinese 6n1p.

A 6N1 is, predictably, a 6N1P.
A 6N11 is equivalent to a 6N23P (is a 6DJ8 is an ECC88).
The Soviet 6N11(P? S?) is some third thing that you never see. Ask Wavebourn maybe.

So much for the otherwise OK nomenclature. This may have occurred in a period where the USSR and PRC stopped talking so much, I don't know. At least it's not the monoclonal antibody naming system.

siliconray · 15th October 2011, 09:11 AM

The circuit is exactly the same as the one in the link! thanks for the posting

Quote:

Originally Posted by Zibi

VR2XMQ - Steve's Blog AF through SHF: Indeed 6N11 Tube Class A Headphone Amplifier Vs. Qinpu Q1 + Indeed L-top 6N3 Buffer Amplifier.

siliconray · 15th October 2011, 12:20 PM

Could the sound quality be improved by replacing LM317 current limitor with a constant current circuit composed by opamp and transistor?

bichela · 15th October 2011, 11:50 PM

Quote:

Originally Posted by Tony

i think you will be better off with 6GM8 tubes as it is a low voltage tube...

Interesting. is a 6gm8 a space charge tube? I have a few schematics of a home made low voltage power amp. Not sure if I could use it for a standard Push Pull config, it appeared to be for guitar use. May want to play with one of these designs as the power transformer I need for my 6bm8 push pull amp from Edcor is a bit more than I can afford right now.

siliconray · 16th October 2011, 02:24 AM

How about this one:

15th October 2011, 12:20 PM	#15
siliconray diyAudio Member Join Date: Sep 2011	Could the sound quality be improved by replacing LM317 current limitor with a constant current circuit composed by opamp and transistor? __________________ www.siliconray.com High Quality Audio Enclosures, Amp Kits, Amplifiers, PCB Fab Services Chat with me

16th October 2011, 02:24 AM	#17
siliconray diyAudio Member Join Date: Sep 2011	How about this one: __________________ www.siliconray.com High Quality Audio Enclosures, Amp Kits, Amplifiers, PCB Fab Services Chat with me

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14th October 2011, 08:36 PM	#12
Zibi diyAudio Member Join Date: Jan 2006 Location: Bialystok	VR2XMQ - Steve's Blog AF through SHF: Indeed 6N11 Tube Class A Headphone Amplifier Vs. Qinpu Q1 + Indeed L-top 6N3 Buffer Amplifier.

14th October 2011, 09:37 PM	#13
alfiax diyAudio Member Join Date: Oct 2005	I have yet to see curves for the 6n11, but the implication I've seen is that it's supposedly a chinese 6n1p. A 6N1 is, predictably, a 6N1P. A 6N11 is equivalent to a 6N23P (is a 6DJ8 is an ECC88). The Soviet 6N11(P? S?) is some third thing that you never see. Ask Wavebourn maybe. So much for the otherwise OK nomenclature. This may have occurred in a period where the USSR and PRC stopped talking so much, I don't know. At least it's not the monoclonal antibody naming system.

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