#16
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As far as replacing power and preamp tubes is concerned, preamp tubes typically last a lot longer than power tubes. I've got a set of 12AX7 preamp tubes in a Marshall that have been there for twenty-seven years and are going strong. They have survived a burned out pair of EL-34 power tubes.
Bob
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"It is said, 'Go not to the elves for counsel for they will say both no and yes.' " Frodo Baggins to Gildor Inglorion, The Fellowship of the Ring THE MUSICIAN'S ROOM (my website) |
#17
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#18
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Of course, taking the amp chassis out of the cab to work on BIASing, yea.. not something you do unless you know what you're about.
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Ray Gibson SJ200 Taylor Grand Symphony Taylor 514CE-NY Taylor 814CE Deluxe V-Class Guild F1512 Alvarez DY74 Snowflake ('78) |
#19
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Agreed. There is nothing wrong with a blue glow in your power tubes. Same with getting fingerprints on the glass. The tube isn't going to get hot enough for the oil to cause them to break. |