Crooked Vacuum Tube?
Nightfall
Posts: 10,086
in Electronics
Just wondering if this is an issue or not. It's a 12AX7. I'm going to speak in very technical terms here because I'm a tube guru so let me know if I need to dumb it down.
You know how the pins on the bottom have wires on the inside that go to the bottom plate type deal? That lower plate does not go straight across the tube, it's higher on one side than the other. I only looked at it for a few seconds before packing up to come house/dog sit at my friends so it's not in front of me anymore. It could have been that all of the internals were a little crooked. I even think I remember that the pins that stick out the bottom were longer on one side than the other so if you set the pins on a flat surface the glass looked like it was crooked too but I can't really remember those few seconds very vividly.
You know how the pins on the bottom have wires on the inside that go to the bottom plate type deal? That lower plate does not go straight across the tube, it's higher on one side than the other. I only looked at it for a few seconds before packing up to come house/dog sit at my friends so it's not in front of me anymore. It could have been that all of the internals were a little crooked. I even think I remember that the pins that stick out the bottom were longer on one side than the other so if you set the pins on a flat surface the glass looked like it was crooked too but I can't really remember those few seconds very vividly.
afterburnt wrote: »They didn't speak a word of English, they were from South Carolina.
Village Idiot of Club Polk
Comments
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I have some NOS GE JAN tubes in the shape just like you described. Never a problem with them, worked perfect. I even recently acquired a pair of NOS Bendix red banks with a crooked getter, no issue what so ever with those either.2 channel:
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Shouldn't be an issue. It;s not common but it does happen."Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
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I find tubes like that to be a tad bright.
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“When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson -
Wanted to show you guys a picture now that I'm finally back home. The tube is sitting on a level and flat surface.
afterburnt wrote: »They didn't speak a word of English, they were from South Carolina.
Village Idiot of Club Polk -
Looks like the innards are cocked a slight bit and all the pins are slightly bent to one side as well. I'd call it character.
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last one built on a Friday late afternoon or first thing Monday morning.
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I wouldn't use it. The electrons are going to slide down on that one side. Your system will sound louder on that side. Send it to me for disposal immediately.Aaron
Enabler Extraordinaire
