WDC
New Head-Fier
- Joined
- Nov 2, 2004
- Posts
- 38
- Likes
- 1
Sorry if this is not the right Forum for this question but I am not seeing anything specifically for tubes.
When matching triodes in a power tube (6AS7 for insistence), what is the variance between the triode 1 & 2 that distinguishes Pass/Fail. Is this a fixed number or percentage of minimum GM? Same question when matching between tubes?
What is the standard one can reasonably expect, as well as a hard industry P/F spec?
Thank you
Will
Something found on the net:
TheTubestore.com “Many of the most commonly used pre-amp tubes (e.g. 12AX7, 12AU7, 12AT7, 6922) actually have two identical sections inside of them. These two sections are technically called triodes and are intended to have equal electrical performance characteristics. It is two tubes in one enclosure..."
When matching triodes in a power tube (6AS7 for insistence), what is the variance between the triode 1 & 2 that distinguishes Pass/Fail. Is this a fixed number or percentage of minimum GM? Same question when matching between tubes?
What is the standard one can reasonably expect, as well as a hard industry P/F spec?
Thank you
Will
Something found on the net:
TheTubestore.com “Many of the most commonly used pre-amp tubes (e.g. 12AX7, 12AU7, 12AT7, 6922) actually have two identical sections inside of them. These two sections are technically called triodes and are intended to have equal electrical performance characteristics. It is two tubes in one enclosure..."
Last edited:
