- Have a good time, everyone, help me figure it out.I have a CAYIN 860 amplifier with 12ax7,12au7,6n6 and four ct88 lamps in it,in the manual that I have it says that the lamps should stand 12ax7,12au7,6cg7 and 4pcs ct88,who can explain to me and who can have a circuit with a 6cg7 lamp,I will be very grateful.
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HI Vladimir,
It could help if you take some pics of the amp, especially the 6n6 tube, and the wiring. That could be a Russian 6Н6П, Chinese 6N6 or the RCA 6N6.
Regards,
Jose
It could help if you take some pics of the amp, especially the 6n6 tube, and the wiring. That could be a Russian 6Н6П, Chinese 6N6 or the RCA 6N6.
Regards,
Jose
You could try sending an e-mail to: info@cayin.cn
Something like this... maybe...
Dear Spark Audio,
I purchased this amplifier in {insert year} and have been extremely happy with the sound. However, just recently the amp is starting to sound distorted on one channel. I would really like to get it working again and was wondering if you could please e-mail me the circuit diagram?
{I have attached the receipt as a proof of purchase.}
I am also happy to sign the non-disclosure agreement to ensure You I will not share the circuit diagram with anyone else. I studied electronics (long ago) and would like to attempt to repair it myself.
Thank you,
Worm regards,
{Your name}
Good luck!
Something like this... maybe...
Dear Spark Audio,
I purchased this amplifier in {insert year} and have been extremely happy with the sound. However, just recently the amp is starting to sound distorted on one channel. I would really like to get it working again and was wondering if you could please e-mail me the circuit diagram?
{I have attached the receipt as a proof of purchase.}
I am also happy to sign the non-disclosure agreement to ensure You I will not share the circuit diagram with anyone else. I studied electronics (long ago) and would like to attempt to repair it myself.
Thank you,
Worm regards,
{Your name}
Good luck!
Extreme_Boky
Hi, and what kind of lamps do you have, I wrote to this email and they answered and sent a diagram.
I was repairing and modifying a 265Ai amp... different amps.
It looks like a Chinese 6N6T... is it a 9-pin tube? Take a photo of the valve base.... and confirm that the valve part number is indeed 6N6T.
See here for more info:
https://www.diyaudio.com/community/threads/soviet-6n6-and-6n6g-and-6n6p1.376795/
Also, I attached the 6N6 spec sheet... but your valve might be a nine-pin one... 6N6/6H6 are interchangeable... but there are many variations.
It looks like a Chinese 6N6T... is it a 9-pin tube? Take a photo of the valve base.... and confirm that the valve part number is indeed 6N6T.
See here for more info:
https://www.diyaudio.com/community/threads/soviet-6n6-and-6n6g-and-6n6p1.376795/
Also, I attached the 6N6 spec sheet... but your valve might be a nine-pin one... 6N6/6H6 are interchangeable... but there are many variations.
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I believe Chinese 6N6 is the same type as Russian 6N6P.
This twin triode has the same pinout as a 6CG7/6FQ7, so you could drop it in and the circuit would probably work. But there are significant differences between 6CG7 and 6N6(P).
US 6N6 is a completely different thing, and is not compatible at all.
Did you purchase this amp new? Or did you buy it used, from a previous owner? It could be that the circuit originally specified a 6CG7, but someone put a 6N6 in its place. Like I said, it would probably work. But the circuit might work better with a 6CG7.
Incidentally, 6CG7/6FQ7 is electrically identical to USA 6SN7, Russian 6N8S, Chinese 6N8.
But 6SN7, etc. is an octal based tube, so is not physically compatible at all. Only the same electrically.
This twin triode has the same pinout as a 6CG7/6FQ7, so you could drop it in and the circuit would probably work. But there are significant differences between 6CG7 and 6N6(P).
US 6N6 is a completely different thing, and is not compatible at all.
Did you purchase this amp new? Or did you buy it used, from a previous owner? It could be that the circuit originally specified a 6CG7, but someone put a 6N6 in its place. Like I said, it would probably work. But the circuit might work better with a 6CG7.
Incidentally, 6CG7/6FQ7 is electrically identical to USA 6SN7, Russian 6N8S, Chinese 6N8.
But 6SN7, etc. is an octal based tube, so is not physically compatible at all. Only the same electrically.
rongon
hi, I didn't buy a new one, but I think it's unlikely that someone changed the lamp. so I want to figure it out and I'm looking for a 6CG7 circuit.
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Hi Vladimir, I have not received the manual.
@rongon basically said it all. The tube is a Chinese 6N6, a copy of a Russian 6Н6П. Both 6CG7 and 6N6 are double triodes, similar mu, but the 6N6 is a much more powerful tube. One can replace the other in some cases, but it's impossible to say for sure without looking at the schematic.
The important question is: Is the amplifier working?
@rongon basically said it all. The tube is a Chinese 6N6, a copy of a Russian 6Н6П. Both 6CG7 and 6N6 are double triodes, similar mu, but the 6N6 is a much more powerful tube. One can replace the other in some cases, but it's impossible to say for sure without looking at the schematic.
The important question is: Is the amplifier working?
hello everyone, maybe someone has a circuit for the CAYIN 880 amplifier, it seems to me it is very similar to the CAYIN 860 circuit, please help me find the circuit.
Correct. Don't put the 6CG7 until you see the schematic to be sure it makes sense.
Strange that the manual says 6CG7, neither Russia or China have an equivalent tube for noval sockets.
@jcalvarez
there are no problems with such a lamp, but it is not worth risking, there is also an 880 amplifier, but there is no circuit for it either, I think the circuit is very similar,
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This test report (in German) of the 880 mentions "...the robust 6N6..."
https://cayin.com/tests/stp_07_12_SD_Cayin_300dpi.pdf
https://cayin.com/tests/stp_07_12_SD_Cayin_300dpi.pdf
jcalvarez
Got it, thanks, I'll take a look.
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From what I understood the 6N6 is between the output tubes and the phase splitter, it could be a cathode follower.