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Old 28th March 2009, 01:33 AM   #1
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Default 12SN7 vs 7N7 bs 6SN7

I webbed somewhere that the 12V version was somewhat less capable than the 7SN and 6SN versions. As this somewhat vertically challenged version seems to fit the architectural bill for the Impasse project, I wonder if anyone could comment on its merits in comparison to its brethren.
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Old 28th March 2009, 02:09 AM   #2
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That might be true of the 6SN7GTB, in TV service. Dig up some data sheets, via TDSL.

I suspect that, for audio purposes, date of manufacture is most important. Scrounge around for some 14N7s and get Emporium, PA, made tubes at highly attractive prices.
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Old 28th March 2009, 11:43 AM   #3
45 is offline 45  Italy
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Default Re: 12SN7 vs 7N7 bs 6SN7

Quote:
Originally posted by jackinnj
I webbed somewhere that the 12V version was somewhat less capable than the 7SN and 6SN versions. As this somewhat vertically challenged version seems to fit the architectural bill for the Impasse project, I wonder if anyone could comment on its merits in comparison to its brethren.
Don't worry and go ahead!
There is no systematic way to state that a 6SN7 is better than its 12SN7 variant (or the contrary) just because of the filament voltage, especially because they are indirectly heated.
More likely you will find some differences between a 6SN7GT and a 6SN7GTB .....


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Old 28th March 2009, 01:10 PM   #4
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hey-Hey!!!,
Ratings aside, it seems the older GT by Sylvania are a bit more expensive than the modern GTB variants. Go for the 7N7/14N7; they'll be much cheaper and you can choose between internals of the older GT style or the newer GTB style. ~$5 for a 14N7 compared to nutsy, sky's the limit for 6SN7's...
cheers,
Douglas
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Old 28th March 2009, 01:32 PM   #5
SY is offline SY  United States
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Jack, would you like a nice 5692 instead? I think I owe you something...
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Old 28th March 2009, 05:43 PM   #6
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hey-Hey!!!,
Consider also 2C50; 12SN7 base, gm, and heater but half the mu.
cheers,
Douglas
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Old 28th March 2009, 05:53 PM   #7
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Quote:
Originally posted by SY
Jack, would you like a nice 5692 instead? I think I owe you something...
Let's just wait until I see if the boards work.

After this, it's Red Light.

Keep the red lamp burning --
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Old 28th March 2009, 07:01 PM   #8
JoshK is offline JoshK  Canada
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Quote:
Originally posted by Bandersnatch
hey-Hey!!!,
Consider also 2C50; 12SN7 base, gm, and heater but half the mu.
cheers,
Douglas
They seem a bit rare judging by how easy they are to find.
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