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I'm still tempted to think they are building them in some new way that is responsible. Chuck's query should get to the bottom of it. But meanwhile, does anyone have a JJ ECC83 and a microscope? 
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Originally posted by Enzo
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Tube no microscope.Originally posted by g1 View PostI'm still tempted to think they are building them in some new way that is responsible. Chuck's query should get to the bottom of it. But meanwhile, does anyone have a JJ ECC83 and a microscope?
Nevetslab has a stereomicroscope
nosajsoldering stuff that's broken, breaking stuff that works, Yeah!Comment
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Man thats a clean break, looks like when we'd make chem glassware and score a big tube with a triangular file then wet the scratch with spit and touch a molten glass blob to it. But 12AX7s do not get very hot, EL34world's Thelonius used an IR thermometer to measure them at about 125F/52C after 10 minutes idle time. Very Odd!
Several people have reported this behaviour as specific to JJs but mostly 5-8 yrs ago. Theory then was sped up production gave a high stress area.Last edited by tedmich; 04-10-2023, 01:38 AM.Comment
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