Email Charlie at Vacuum Tube Valley--he will answer you right away, even on weekends, and knows EVERYTHING. I just ordered a ($$$) quad of NOS Sylvania 6SN7's from him for my Cary SLP98.
Tube issues Mumbo jumbo?
Hello
I am trying to decipher the jargon associated with some tube data sheets as the info applies to one tube and it’s closest variants.
Namely the 6SN7 – 5692, primarily so the appropriate replacement can be selected for a BAT VK 60.
The problem I think stems from info BAT provided me regarding initial start up and biasing process the amp does all by itself. Their recommendation is to use those tubes which are rated at 600v plate voltages. The 600v is applied only during this startup process, and for only a minute or two or at some point during it.
Perhaps I’m missing something somewhere and it wouldn’t be the first time either… but I can find no 6SN7, 6SN7GT, 6SN7GTA, 6SN7GTB, OR 5692 with 600v plate voltage specs. Using Duncan tube data sheet, Vacuum tube Museum, and a couple other spots I don’t recall the names of… none show that high a level Va capacity. I did see one type listed at 450 Va… but I've seen none showing a 600va ability.
Is there such a thing? I’m figuring at least the sovtek 6SN7 that BAT supplied with the amp possess such a rating, yet I see no info that supports it as 600v either.
What’s going on?
I am trying to decipher the jargon associated with some tube data sheets as the info applies to one tube and it’s closest variants.
Namely the 6SN7 – 5692, primarily so the appropriate replacement can be selected for a BAT VK 60.
The problem I think stems from info BAT provided me regarding initial start up and biasing process the amp does all by itself. Their recommendation is to use those tubes which are rated at 600v plate voltages. The 600v is applied only during this startup process, and for only a minute or two or at some point during it.
Perhaps I’m missing something somewhere and it wouldn’t be the first time either… but I can find no 6SN7, 6SN7GT, 6SN7GTA, 6SN7GTB, OR 5692 with 600v plate voltage specs. Using Duncan tube data sheet, Vacuum tube Museum, and a couple other spots I don’t recall the names of… none show that high a level Va capacity. I did see one type listed at 450 Va… but I've seen none showing a 600va ability.
Is there such a thing? I’m figuring at least the sovtek 6SN7 that BAT supplied with the amp possess such a rating, yet I see no info that supports it as 600v either.
What’s going on?