Hi Guys
I recently saw this video:
https://www.youtube.com/watch?v=bX0o3jAzSBs&tHe says he experienced shorter lifespan due to filament flash when working for a large company, and that they overcome this problem placing a resistor in series with the heater and a switch parallel to the resistor, turning this one on after the current consumption has settled.
I am planning to make a case for my K-12G amplifier, and have been thinking of adding this modification to the heaters.
Do you think this is a good idea? Have you experienced problems or a shorter lifespan on your tubes because of this reason? What kind of resistor should I use, given the total current consumption for all four heaters would be 24w?
I also investigated a little bit about the heater wiring, but I understood (correct me if am wrong) that this is more to eliminate hum, rather than eliminating filament flash.
Thanks guys!