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Help me decipher these testing figures on NOS tubes?
Old 13th July 2005
Gear Addict
celebritymusic's Avatar

Help me decipher these testing figures on NOS tubes?


Just wondering what the figures for tests on tubes represent, and what are good figures?

Below I have two examples of testing figures for matched pair tubes. Which are the better performing tubes, and why?

1. Tested : 13.5/11.8-12.4/11.2 7LC delta 0C1

13.1/11.4-12.5/11.4 7LG delta OC1

2. Tested : 9.8/9.8-9.5/9.5 7xx delta9A2

9.2/8.8-9.8/9.3 7xx deltaF2


Shaun Thomson
Old 14th July 2005
Lives for gear
brianroth's Avatar

I'd say they meant something to whoever was running the testing setup, but unless they explain their methods, it's just gibberish to the rest of us.

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