gooky
100+ Head-Fier
- Joined
- May 6, 2008
- Posts
- 372
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- 20
gooky, my PH's hummed quite badly when new, sometimes the hum came and went, sometims continuous. I found the hum could be silenced simply by holding the tube (using a cloth!) or gently prodding the base.
But gradually this hum subsided to silence over time (100+ hours). Even after this, they always still hummed in the first few minutes of start up, just like my current Mesa Boogies do, as did the stock JJs. It's seems quite common really amongst new production tubes.
In short, don't worry too much about the hum. It's the dying bit that you really need to worry about.
I noticed that too! What is it about ringing tubes that makes you want to touch them? I'm probably going to put my tube dampers on them. And yes, I was gullible enough to buy dampers at one point. Thanks for your experience, glad to hear your tubes work; hopefully, that'll be the case with mine, at least for a while. I purchased it mainly out of curiosity, but I don't expect it to be very durable.
I don't think it's amp related, been using xf2 tubes on and off for about three years, and never had a problem (knock on wood.)