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-   -   I have 1 pair of 1J6GT (http://www.diyaudio.com/forums/tubes-valves/24299-i-have-1-pair-1j6gt.html)

Ryssen 15th December 2003 11:42 PM

I have 1 pair of 1J6GT
 
I have 1 pair of 1J6GT, any one know if I can use this tube in an gainstage,preamp.
Anyone have a schema.

fdegrove 15th December 2003 11:58 PM

Hi,

Thats' just another of those US military battery tubes that got left behind...

I must have ditched thousands of those...

O.K. it's like a 6DJ8...sort of...

I've no cct useful for you to copy.

Cheers,;)

P.S. What's next? Shrapnell?

jlsem 16th December 2003 02:51 AM

Quote:

O.K. it's like a 6DJ8...sort of...
No, it's an octal type 19. I vaguely recall an article in Glass Audio a few years ago where it may have benn used as a driver for a 211 amp.

John

i_should_coco 16th December 2003 07:10 PM

I have used it as a differential gain stage in a PP KT-88 amp, was just an experiment, but it sounded superb. - gave the KT-88 that DHT sound. The filament is common to both halves.

It's not really designed for such use and is specified as a class B PP device, but it definately works in class A. Rp is about 15K,

Ryssen 16th December 2003 09:37 PM

Quote:

I vaguely recall an article in Glass Audio
You donīt remember what number it was?
Quote:

but it definately works in class A. Rp is about 15K
You donīt have a schematic?Or can write one down for me?

i_should_coco 16th December 2003 10:04 PM

Quote:

Originally posted by ryssen

You donīt remember what number it was?

It's in GA 2/96 "In Search of the Perfect Tube" by David O'Rourke.

Quote:

You donīt have a schematic?Or can write one down for me?

I don't have the schematic handy, but I basically used it as a Long Tailed Pair phase splitter in the first stage, running 1.5mA or so, with a 56K load. I think Vp was about 130V in this stage.

I also used it in the driver stage with a load of 40K or so, but it's tricky to get enough swing out of it to drive the output stage without resorting to plate voltages higher than the rated max. I did this :eek: , but I certainly wouldn't recommend it, Having said that, I've had no problems with these tubes so far....

Cheers/
Pete


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