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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Whats the right time to change tubes,.. posted by Japesgalore on June 27, 2008 at 12:27:53:
I pulled tubes (not power tubes- never please) in active circuits with zero volume and not caused harm to any tube or device over a period of 40 years. Mind you, not recommended. One very remote possibility is of inserting/removing tubes in an active circuit created an internal arc in a tube such as blowing a hole in a small section of a grid wire. But, both tubes at the same time? That is extremely unlikely in a small signal tube circuit. And, for the most part small signal tubes operate at rather low voltages in a circuit 'snubbed' with a plate resistor. Not the best circuit for creating an arc in a tube in-between internal elements. So, I doubt I have been blessed with 'lady luck' over 40 years. Trying that trick with power tubes is another matter.
Other factors come into play here. First, the background noise at different times in your environment causes small differences in perception of what you are hearing. Are you remembering the best CD youu heard at 1am in the morning? Changes in your electrical power distribution system can actually change the sonics ever so slightly. Electrical distribution power is usually cleaner late at night. Temperature & even humidity ever so slightly can alter the sound. As for the CD player, perhaps it is time to clean the unit.
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Follow Ups
- RE: Whats the right time to change tubes,.. - Neff 02:41:39 06/28/08 (0)
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