R raps1514 New member Feb 16, 2025 #1 Hello all, I am new to tubes and have a general inquiry about tube glow. Both 2A3s on my amp appear to have a blue glow on the inner glass and bottom plate only really visible under low light conditions. How normal is this? Note: this is not a BH amp. Thanks! Attachments 1.jpg 1.2 MB · Views: 8 2.jpg 1.2 MB · Views: 5
Hello all, I am new to tubes and have a general inquiry about tube glow. Both 2A3s on my amp appear to have a blue glow on the inner glass and bottom plate only really visible under low light conditions. How normal is this? Note: this is not a BH amp. Thanks!
Paul Birkeland Moderator Staff member Feb 16, 2025 #2 https://www.jacmusic.com/techcorner/ARTICLES/English/blueglow/blueglow.html There's lots of info here.
https://www.jacmusic.com/techcorner/ARTICLES/English/blueglow/blueglow.html There's lots of info here.
R raps1514 New member Feb 17, 2025 #4 Paul Birkeland said: https://www.jacmusic.com/techcorner/ARTICLES/English/blueglow/blueglow.html There's lots of info here. Click to expand... Certainly looks like 'Fluorescence Type 1' and decidedly...normal.
Paul Birkeland said: https://www.jacmusic.com/techcorner/ARTICLES/English/blueglow/blueglow.html There's lots of info here. Click to expand... Certainly looks like 'Fluorescence Type 1' and decidedly...normal.
