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Perhaps 80 is loaded with too large first filter capacitor. Nothing more than 22uF should be used there. After the choke - freelance.
Such an arcing surely means almost-dead tube. Either the current or voltage rating was exceeded, or there was some gas inside.
Kinescoop 2 years ago
i did replace the 80. the amp is a yamamoto a-08s using a type 45 output tube. it is a SET pumping out a full 2 watts of power.
kgturner 3 years ago
Comment removed
hopsieflopsie 4 months ago
This has been flagged as spam show
Google for: "white spark Emission Labs"
You will find the explanation there
hopsieflopsie 4 months ago
That is neat to see, but should be immidiatly shut off and a new 80 put in. Is this one of the SET amps that uses 300B tubes?? I want to hear what one sounds like. I am experimenting using 01a tubes as a pre amp and have been very pleased with the resutls.
darksound1973 3 years ago