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300B tube death question........


Has anyone experienced the death of their 300b tube? What happened.....Exploded? Imploded? Awesome fireworks display? I'm just preparing myself for when it happens.

Also, the 300b tubes in my amp is underbiased and it won't reach optimum recommended voltage settings (volt meter should read 700ma but tube is at 450ma). The amps have manual bias adjustments only.

So far nothing has happened and the sound is fine. Should I replace them now or wait until they die? (see above question).

Amps: ASL monoblocks SET amps - (2) 300b per channel
Tubes: Valve Art 300B 98C

Thank you for sharing.
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Showing 2 responses by swampwalker

swampwalker's avatar
swampwalker
5,138 posts
 
If you are saying that you cannot get the bias reading high enough, even with the pot turned up all the way, then something is wrong.
swampwalker's avatar
swampwalker
5,138 posts
 
NO return on a defective tube makes them a non-viable supplier, IMO. Sounds like they are using their customers as QA/QC. For 20 bonus points, what large software supplier uses the same business model? Seriously, unless your vendor is 30% lower in price than the competition, then their policy in unsupportable.
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