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Old 22nd January 2013, 09:04 PM   #11
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Quote:
Originally Posted by rknize View Post
Only a few of them glow blue...
How come my metal base SED 6550 s don't glow blue? Huh?
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Old 22nd January 2013, 09:22 PM   #12
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Not enough air in them.
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Old 22nd January 2013, 10:25 PM   #13
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Hopefully all the tubes glow. But a relatively small cap will reduce the flicker to the point where it wont be noticed.

I'm not a tubie but from what I read "Blue is Wrong", "Red is Right"

Last edited by KatieandDad; 22nd January 2013 at 10:28 PM.
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Old 23rd January 2013, 04:13 AM   #14
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Some blue is OK. Blue on the glass for example...just impurities in the glass getting excited by stray electrons. Certain SED tubes really glow.
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Old 23rd January 2013, 09:55 AM   #15
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thanks for the help. yes the tubes will light up if the amp is on but I just wanted know if I was on the right path, All my parts in about 2weeks cannt wait
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