SET Asylum

Get rid of that tube eater.

40.0.40.10

In Reply to: RE: 300B Tube-life expectancy... SURVEY!!! posted by Tone! on November 29, 2007 at 23:41:19

I have a pair of early Svetlana 300Bs that have about 9800 hours on them and still perform great. My amp runs them close to the classical 300B operating point. I run them at 360V, 65ma, -75V into a 4K OPT. I get 6.5 watts. I don't understand way people run the crap out of their tubes. In order to get 10W out of a 300B you have to run them close to their max. However, the difference between 6.5W and 10W is less then 2dB. Treat your tubes nicely, and they will last for a good while.

Edits: 11/30/07

Follow Ups:

RE: Get rid of that tube eater. - Paul Joppa 09:54:12 11/30/07 (1)
- I've seen that too. (nt) - JLH 12:35:28 11/30/07 (0)

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