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shovel
10-15-2006, 01:59 AM
Dose anyone know where to find a chart that shows the interchange and numbers of tubes.I ordered a set of 6L6 GC tubes for my Bassman Ten and got a pair of 6N3Cs.I putt em in and they sound good.I want to know if I can swap the 12AT7 for a 12AU7 just to try some diferent tones.Thanks for any help.
Tom Phillips
10-15-2006, 02:57 AM
Dose anyone know where to find a chart that shows the interchange and numbers of tubes.I ordered a set of 6L6 GC tubes for my Bassman Ten and got a pair of 6N3Cs.I putt em in and they sound good.I want to know if I can swap the 12AT7 for a 12AU7 just to try some diferent tones.Thanks for any help.

The 6N3C is often described as the Russian equivalent of a 6L6GC. I suspect that many "6L6GCs" that are of Russian origin are re-marked "6L6GC" before hey are sold. However, I would be miffed to receive "6N3Cs" if I purchased "6L6GCs" unless there was an upfront agreement. I cannot really vouch for how equivalent the 6N3C is to the 6L6GC but in reality there are lots of differences between every brand of tube being marketed today as a 6L6GC.
If you Goggle 6N3C you will find lots of information.

I'd say that you can swap a 12AT7 for a 12AU7. The 12AU7 is usually used in driver situations and is not really known for being used in a location that is responsible for much tone. If you post the amp model and location in the circuit I'm pretty sure you will get some good advice.

Tom
steve
10-15-2006, 04:56 PM
Dose anyone know where to find a chart that shows the interchange and numbers of tubes.I ordered a set of 6L6 GC tubes for my Bassman Ten and got a pair of 6N3Cs.I putt em in and they sound good.I want to know if I can swap the 12AT7 for a 12AU7 just to try some diferent tones.Thanks for any help.

The "6N3C" is a 6L6G equivalent according to this site:

http://www.machmat.com/sales/6l6.htm

In Russian they are 6П3С, the second character is a "P" sound, the fourth is an "S" sound in the Cyrillic alphabet.

I've never heard anything but bad things about the 6П3С, but have never personally tried them. YMMV.

The 6П3С-EB is the millitary version rated for long life and mechanical durability. It is the same tube as the Sovtek "5881."

As far as equivalents go, download this software:

http://www.duncanamps.com/tdslpe/

When you plug in a tube number, it gives you tube data, equivalents (both close and identical) and pinout. It will aslo give you a list of tubes with the same pinout.

steve