thefragger
Certified Crazy.
Hey guys,
So I bought a lot of ECC81 (12AT7) tubes for funsies, and now I want to test 'em. I crack open my book and, surprise surprise, that good ol' Eico data is all jumbled up and does not make any sense to me.
I checked through all the different booklets and I'm seeing the same variation, but different numbers. :sigh:
Can I just choose one set of grid and plate settings and go along testing away?
Here's my problem:
The Tone Lizard page on the Eico 666 has some great information on testing tubes and comparing the different versions of the manuals to one another (see here: http://tone-lizard.com/Eico666.html). Tone Lizard has found that the 666-04 settings seem to run the 12AT7 tubes more realistically.
So, I'm assuming here that I know things, and what I think I know is that both sections of a 12AT7 tube are the same, which means that I shouldn't have to change the voltage settings when testing the two sections.
Would I be within my right to, say, keep the voltage setting applied to the grid and plate, only changing the levers which assign the pins?
:scratch2:
So I bought a lot of ECC81 (12AT7) tubes for funsies, and now I want to test 'em. I crack open my book and, surprise surprise, that good ol' Eico data is all jumbled up and does not make any sense to me.
I checked through all the different booklets and I'm seeing the same variation, but different numbers. :sigh:
Can I just choose one set of grid and plate settings and go along testing away?
Here's my problem:
The Tone Lizard page on the Eico 666 has some great information on testing tubes and comparing the different versions of the manuals to one another (see here: http://tone-lizard.com/Eico666.html). Tone Lizard has found that the 666-04 settings seem to run the 12AT7 tubes more realistically.
So, I'm assuming here that I know things, and what I think I know is that both sections of a 12AT7 tube are the same, which means that I shouldn't have to change the voltage settings when testing the two sections.
Would I be within my right to, say, keep the voltage setting applied to the grid and plate, only changing the levers which assign the pins?
:scratch2: