Tube advice

[WDC]

Does anyone know what the "G" stands for in a 6AS7 G 6AS7G (Chatham (example ))tube.
Are there 220v and 110v versions of this tube and should I be matching a 100v tube with a 110-120v system.


Thanks
WDC

 

[WDC]

While looking for these 6AS7GA tubes I see a lot of different makers ie JAN 6AS7G RCA 12/66 NEW Vacuum Tube, 6AS7 G 6AS7G Chatham JAN, 6AS7G SVETLANA, etc. Is there any particular maker or year that are best for audio amplifiers?

Also would someone explain the primary function of the 6AS7GA class of tubes. I have read a lot about the 6DJ8 class and understand how the sound differs in the various tubes in these class, does the same apply to the 4AS7GA?

I am running a Woo Audio WA3, by the way I have received my WA3 last week and am very happy with it. Once I have time to settle back in here in the USA I will I will post my overall impression of the unit.

 

[Len]

6AS7 is a small dual power triode tube. The G stands for "glass" envelope, and any letters that follow are arbitrary, usually indicating updated iterations. 6AS7 weren't made in the vast variety 6DJ8 and 6SN7s were, and your choices are relatively limited. Some applications like Atmasphere amps drive these bulbs pretty hard and so only the modern Svetlana/Sovteks will do. I doubt this is true for your Woo Audio, and I'm fairly confident NOS tubes like the RCA and Sylvania will do just fine. Unfortunately, I do not have much practical experience with this tube type so I can't tell you what sounds better. This is a cheap tube and I encourage you to tube roll various types to see what sound you like. As for 220V versus 110V, this is not tube-dependant but rather how your amplifier is designed. The 6AS7 can be wired for both 220V and 110V household lines.

 

[WDC]

Thanks that helps.
Does anyone what a Tung Sol Type 41 (or 45) Audio Radio Electron Vacuum Tubes is? is it equivalent to the 6AS7

Thanks again,

 

[Len]

Neither 41 or 45 is a 6AS7 equivalent. In fact, neither have the same pin outs, so you couldn't fit it into the octal socket if you wanted to. 6080 is a substitute. Stick with 6AS7, and I don't recommend experimenting unless you're willing to have something burn out or blow up.

 

[WDC]

Quote:

Originally Posted by Len Neither 41 or 45 is a 6AS7 equivalent. In fact, neither have the same pin outs, so you couldn't fit it into the octal socket if you wanted to. 6080 is a substitute. Stick with 6AS7, and I don't recommend experimenting unless you're willing to have something burn out or blow up.

Thanks for the advise Len and no I wont be sticking anything in without verifying with others it is compatible, I just don’t know enough yet on what compatible and what’s not.

I have found the following tubes can you tell me if they are compatible with the 6AS7 “We dont have any of the 6AS7's but we do have two JAN Tung-Sol 6080WB with springs”. These are 6080 but I’m not sure about the “WB” and what they mead by springs.

Will

 

[Len]

6080WB are ruggardized versions (W designated tubes are almost always ruggardized versions, usually with extra support rounds or heavier micas). The "springs" are probably referring to the mechanism holding the plates/micas in place, designed to help prevent physical shock. These may be used in place of 6AS7.