The Reference 6J5 Thread (L63, 6C5, 12J5, 6P5, etc.)
- Thread starter chrisdrop
- Start date
You have probably already seen this, borrowed from here: https://vacuumtubesinc.com/index.php/hallofshame
Fake 6C5G
"The tube at left is clearly branded 6L5G, but has a paper tag labeling it as a 6C5. 6L5G tubes have a shiny nickel plate with no internal shielding. Most 6C5G tubes have a perforated or mesh shield as the center tube. To be fair, there is a rare form of the 6C5G made for Silvertone (pictured at right) that does not have the shield.
The 6L5G is essentially a 150mA filament version of the 6C5G, which has a 300mA filament. However, the internal shield of the 6C5G makes the output capacitances much different".
Fake 6C5G
"The tube at left is clearly branded 6L5G, but has a paper tag labeling it as a 6C5. 6L5G tubes have a shiny nickel plate with no internal shielding. Most 6C5G tubes have a perforated or mesh shield as the center tube. To be fair, there is a rare form of the 6C5G made for Silvertone (pictured at right) that does not have the shield.
The 6L5G is essentially a 150mA filament version of the 6C5G, which has a 300mA filament. However, the internal shield of the 6C5G makes the output capacitances much different".
leftside
Headphoneus Supremus
That’s probably a mistake rather than a deliberate fake. Hardly seems worth it for that tube.You have probably already seen this, borrowed from here: https://vacuumtubesinc.com/index.php/hallofshame
Fake 6C5G
"The tube at left is clearly branded 6L5G, but has a paper tag labeling it as a 6C5. 6L5G tubes have a shiny nickel plate with no internal shielding. Most 6C5G tubes have a perforated or mesh shield as the center tube. To be fair, there is a rare form of the 6C5G made for Silvertone (pictured at right) that does not have the shield.
The 6L5G is essentially a 150mA filament version of the 6C5G, which has a 300mA filament. However, the internal shield of the 6C5G makes the output capacitances much different".
I have some 6L5 somewhere that work perfectly fine in the 6J5 sockets. I’ll have to dig them out.
If it was a fake, it was a really bad one. You would at least cover the 6L5G branding with the paper label so I agree, no fake intended.
bcowen
Headphoneus Supremus
Mine work just fine in place of 6J5's. These RCA's aren't top contenders for me, but they sound OK....and look cool.
maxpudding
100+ Head-Fier
I think the purpose of the sticker is just to tell people that the tube is interchangeable with 6C5 tubes
But it should tell that it 'might be'.
JKDJedi
Headphoneus Supremus
What happens if you drop dual triode tubes in an adapter designed for dual single triode tubes ? I sold the adapter and the buyer dropped dual triode tubes in there, now their amp has distortion.
therremans
1000+ Head-Fier
Like using two 6sn7s in a dual 6j5 (single triode octal) adapter? Never tried it.What happens if you drop dual triode tubes in an adapter designed for dual single triode tubes ? I sold the adapter and the buyer dropped dual triode tubes in there, now their amp has distortion.
Two totally different pin layouts. Can’t imagine it would be good for the tubes or amp. So it sounds like it damaged the amp?
Depends, but the major issue would be causing a short that damages a component.
JKDJedi
Headphoneus Supremus
yeah ..the amp I just sold... Jesus Christ...the luck..Like using two 6sn7s in a dual 6j5 (single triode octal) adapter? Never tried it.
CAJames
500+ Head-Fier
Based on the pinouts it seems like it would be bad for the tubes. Hard to tell how the amp would react though.
therremans
1000+ Head-Fier
Well hopefully you got paid and it’s their amp and their (bad, “unlucky”) choices they have to live with. Which amp? DM me if you need.
JKDJedi
Headphoneus Supremus
thanks I'll do that soon as I get out of this supermarket..
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