Thanks for all the replies, but I was really asking why a tube becomes noisy and doesn't just go out? What causes the noise?
Thanks
Thanks
Bad Tube in an Audible Illusion M3A
After using an Audible Illusion M3A preamp for over three years I finally had a tube go bad. I noticed a loud whoosh in the right channel and traced it to the phono section. By swapping the tubes between left and right I discovered it was the tube on the right side causing the noise. The tube had only about 300 hours on it.
I've had tubes that I replaced because the highs diminished, I have a tube in an amp that rattles when it powers up, but I've never had a tube get noisy. Why does a tube do this? It would seem the tube would short out or just stop working.
In hindsight I shouldn't complain, this is the first tube I've had go bad in the M3A!
I've had tubes that I replaced because the highs diminished, I have a tube in an amp that rattles when it powers up, but I've never had a tube get noisy. Why does a tube do this? It would seem the tube would short out or just stop working.
In hindsight I shouldn't complain, this is the first tube I've had go bad in the M3A!