I always turn down the bias on the old tubes before I put in the new tubes.Your old tubes do get tired and need more of a push ,so when you put in your new ones they shouldn't need as high a bias....This works for me...
Biasing for new tube
I'm new to the tube world so I apologize if this is a no-brainer question for the experts. I am replacing one tube in a VTL MB 185 that arced on me. Do I need to check bias after the new tube is installed -- the VTL manual tells me to do so when I install all new tubes, but it's not clear as to the procedure when replacing a single tube. I'm getting the replacement tube from VTL. Any help will be greatly appreciated.
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- 6 posts total
- 6 posts total