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In Reply to: RE: Tech's view on European tubes heater flash posted by johns dad on April 5, 2016 at 06:01:04:
The you tube poster as a technician would rightly be concerned about filament flare up on power up. And perhaps, he has less experience with vintage tubes than some of the grizzled veterans lurking at this site. Afterall, he did lump the Telefunken brand in with the Amperex group and we all know that Teles don't flare unless truly defective. I have tested literally thousands of tubes and can certainly attest that the flare up phenomenon seems to have no effect on performance and the fact that all those vintage Mullard and Amperex signal tubes are still working after 60 plus years does cast doubt on his conclusions or assumption of a defect problem. Perhaps, tooting his horn to some extent? Anyway, the major take away from all of this is .... DON'T TRUST WHAT YOU SEE ONLINE!
cheers, Dak
Edits: 04/05/16
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Follow Ups
- RE: Looking at the issue logically - DAK 14:01:04 04/05/16 (0)