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Questions about tubes and gear that glows. FAQ

RE: tube choice

I already communicated with BL about that power cord. I rewired my ancient (about as old as the original ST70? and used 16-2 and a simple strain relief. Had to 'hog out' the mount and to do so I isloated it with TAPE on inside and out. I vacuumed after than SLOWLY peeled the tape. I used a MAGNET at the same time and DID trap a few additional particles..

As for the ST70 / 120? New chassis is 16ga (= 55 thousandths) of an unspecified STAINLESS alloy.
They claim non-magnetic which, IMO, is a red herring since ANY metal conducting electricity will also have a magnetic field AND the reverse is true. I don't know if a standard 'nibbler' would work or if I'd need machine shop help with a proper chassis punch.......
Cost for such a punch is in the 100s of $$.

Is what you saw with a 'live chassis' the result of a Hot ? neutral swap? If so? What do the directions say about this wiring? Short (sorry!) of doing something VERY WRONG, how do you fry a power switch?

And yes, my take from limited reading is that the KT120 is overkill. the KT88 seems to be the sweet spot. It also has good availability. There is MORE CONCENSUS about the 'goodness' of the KT88 than any other tube almost without exception.
Too much is never enough


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