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Phil Allison[_4_] Phil Allison[_4_] is offline
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Default Triode Naming Convention

Xtrchessreal wrote:

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Section 1 is so called due to lower hum compared to section 2.


** The 2 triodes of a 12AX7 / ECC83 are identical, one doe not "hum" more than the other.

Internal connection arrangements for grids and heaters vary between versions and brands, maybe having a small effect on capacitive coupling if high impedances feed he grids.

It is very common to use DC voltage for the heaters to eliminate any issues whether grid or cathode related.



..... Phil