I have tube pre kit which (supposedly) works with any of these. Which is most linear? Most musical? Or otherwise preffered?
I can get some or all, and compare, but even different supliers can result in different sound.
Any recommendation? They do have different heater current demands, so i have to account for this.
I already have one working in box and second is up and running on the floor. I want to replace all my solid state pre, as this pre has more musicality for me. I got no schematics, sorry.
I can get some or all, and compare, but even different supliers can result in different sound.
Any recommendation? They do have different heater current demands, so i have to account for this.
I already have one working in box and second is up and running on the floor. I want to replace all my solid state pre, as this pre has more musicality for me. I got no schematics, sorry.
6N1 is not a 6DJ8. Lower gm, higher rp, works at higher voltages. (High impedance) The Russian version is 6N1P. That's a fine tube, but it's definitely not a 6DJ8 equivalent.
6N2 is definitely nothing like a 6DJ8. It's basically a 12AX7 with a 6V heater. The Russian version is 6N2P.
6N11? What the heck is that? Maybe that's the Chinese version of 6922/E88CC.
6N23P is essentially the Russian version of 6DJ8 or ECC88. 6N23P-EV is similar to 6922 or E88CC.
From audiotubes.com:
![chinese[1].jpg](https://www.diyaudio.com/community/attachments/chinese-1-jpg.1004638/ "chinese[1].jpg")
Wait... 6N1P is electrically equivalent to ECC40??
--
6N2 is definitely nothing like a 6DJ8. It's basically a 12AX7 with a 6V heater. The Russian version is 6N2P.
6N11? What the heck is that? Maybe that's the Chinese version of 6922/E88CC.
6N23P is essentially the Russian version of 6DJ8 or ECC88. 6N23P-EV is similar to 6922 or E88CC.
From audiotubes.com:
Wait... 6N1P is electrically equivalent to ECC40??
--
Hi rongon, thanks for plethora of information. That's exactly what i am looking for. Kit comes standard with either 6N11 or 6N2. I do not know what is 6N11.
Attachments
I do not know the circuit or if the parts differ between the kits, but it looks simple enough to draw the circuit.
6N11-J is the Chinese version of 6922.
Personally, I have found no issues with Chinese signal tubes but I tend to buy Soviet.
Personally, I have found no issues with Chinese signal tubes but I tend to buy Soviet.
According to the internet (not always right), 6N11 can substitute any of these: ECC88, E88CC, 6922, 6DJ8 and 7308.
So you are absolutely right, kodabmx.
I have one pair of these, and if I search the drawers, I can likely find 6922 and 6DJ8.
So you are absolutely right, kodabmx.
I have one pair of these, and if I search the drawers, I can likely find 6922 and 6DJ8.
Some other info I found on diyaudio:
Chinese 6N11 is more like Russian 6N23P-EV or western 6922/E88CC
(confirms what rongon wrote)
Chinese 6N11 is more like Russian 6N23P-EV or western 6922/E88CC
(confirms what rongon wrote)
Last edited:
from some other thread info from member in Ukraine:
6N11 - I believe this is actually 6N1P, and if I'm right then it may be directly substituted with 6DJ8/6922/ECC88, although they are noticeably different. Or you may try Svetlana 6N1P.
some else comments: if 6N11 = 6N1P as our ukrainskij friend suggests, then it is also very easy to find
I do have plenty of NOS unbranded (military?) 6N1P and new Svetlana 6N1P still in the original package. Should be fun to compare sound/spectrum once I finish the power supply.
These kits do have power supply on board, but the filtration is not sufficient, so there is some hum. This is what I need to remove first in order to do proper measurements.
6N11 - I believe this is actually 6N1P, and if I'm right then it may be directly substituted with 6DJ8/6922/ECC88, although they are noticeably different. Or you may try Svetlana 6N1P.
some else comments: if 6N11 = 6N1P as our ukrainskij friend suggests, then it is also very easy to find
I do have plenty of NOS unbranded (military?) 6N1P and new Svetlana 6N1P still in the original package. Should be fun to compare sound/spectrum once I finish the power supply.
These kits do have power supply on board, but the filtration is not sufficient, so there is some hum. This is what I need to remove first in order to do proper measurements.
Last edited:
6N11J is not a 6N1. Nothing wrong with 6N1 though depending on what you need to do. If a 6N3 or 6N1 won't do it, I use a 6N6 because 6N23 and 6DJ8 are expensive these days.
I do have plenty of 6N6P, but I do not want to try them in this kit as they require enormous heater current.
My goal is to have 4-5 functioning tube pre, which would accommodate various tubes. Then compare sound to harmonic spectrum. But I do not want to randomly swap tubes which were never meant to be equivalent. Hence I am gathering the information.
My goal is to have 4-5 functioning tube pre, which would accommodate various tubes. Then compare sound to harmonic spectrum. But I do not want to randomly swap tubes which were never meant to be equivalent. Hence I am gathering the information.
Last edited:
6N1 takes 600mA as does 6CG7, 6N6 takes 750mA. Not that much of a difference.
6N2, 6N3, 6N23, etc are 300-350mA.
6N2, 6N3, 6N23, etc are 300-350mA.
Gain of 6N2 is 100. The rest of the data seems correct.
Max voltage specs can be exceeded, too. I've used 6N6 with 320V on the plate in a push pull amp, and some people would say the 90V (some sheets say 130V) spec for 6N23 and 6DJ8 is due to the max Vhk spec and how they were meant for cascode. I've used 6DJ8 at >200V without issues.
Max voltage specs can be exceeded, too. I've used 6N6 with 320V on the plate in a push pull amp, and some people would say the 90V (some sheets say 130V) spec for 6N23 and 6DJ8 is due to the max Vhk spec and how they were meant for cascode. I've used 6DJ8 at >200V without issues.
I have one of those boards/kits. The one I have is a very standard SRPP circuit with a gain in or around 30. Sounds very good with 6n2p-ev in place (mine is the 6n2 version). I think I replaced the cathode cap in it as far as I remember
Yes, i already traced it. It's as simple as it gets. Maybe that's the reason why it sounds good.
I have started to do some measurements with various tubes, and i see differences, but my noise floor is not low enough. I need to address that.
I have started to do some measurements with various tubes, and i see differences, but my noise floor is not low enough. I need to address that.