barrymclark Posted July 23, 2010 Author Share Posted July 23, 2010 Tung Sol reissue tubes have almost no filament glow when compared to other tubes. only the sovtek LPS has less glow, due to the spiral filament. Does the brightness of glow mean anything at all? Link to comment Share on other sites More sharing options...
tulk1 Posted July 23, 2010 Share Posted July 23, 2010 Does the brightness of glow mean anything at all? Only if it's glowing blue, and on the outside! Which means you have a leak in the tube. And then, of course, if there is NO glow and the tube doesn't get hot. Link to comment Share on other sites More sharing options...
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