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Plastic generally isn't an air tight seal. The leaks may be slow, but generally we hope vacuum tubes last for years.
by bluGill 5mo ago
Plastic generally isn't an air tight seal. The leaks may be slow, but generally we hope vacuum tubes last for years.
- Supernaut 5mo ago> generally we hope vacuum tubes last for years If I may offer an anecdote, the output stage in my guitar amplifier is powered by a GEC tube that is now 55 years old. It sounds great. When I found the tube, it had been rolling around for a couple of decades at the bottom of a wooden box. This could simply be survivorship bias, but it does appear that back in the day, they knew how to build these things to last.