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How it's made: Vacuum tubes

post #1 of 20
12/20/12 at 7:11am
Thread Starter 

 

I just saw this on How It's Made, and I thought I'd share it with you guys. Pretty neat. 

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post #2 of 20
12/20/12 at 6:23pm

Awesome and unreal!

 

Thanks for posting!!

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post #3 of 20
12/20/12 at 6:38pm

Nice find. Very interesting!

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post #4 of 20
12/21/12 at 4:37am

Nice!

 

Those tubes are enormous though!!

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post #5 of 20
12/21/12 at 4:40am

Nice find.

Thanks

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post #6 of 20
12/21/12 at 6:13am

Wow those tubes are literally enormous

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post #7 of 20
12/21/12 at 2:32pm

That's quite a job. Makes me appreciate tube amps even more. = )

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post #8 of 20
12/21/12 at 3:24pm

... that was awesome...

 

and what a fantastic CRAFT! I mean Almost purely all hand made... and I love that they "pair" tubes together! I love how  involved people are to the process of tubes! A ss is made my machine, but MAN makes the Tube ;3


Edited by Mshenay - 12/21/12 at 7:03pm
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post #9 of 20
12/21/12 at 8:10pm
That's pretty awesome! Ancient technology. :P
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post #10 of 20
12/22/12 at 8:52am

Pairing tubes helps, especially in A/B and class B operations. Matching improves sonic accuracy.

 

I had no idea there was so much hands on glass work. No wonder these things can be mass manufactured by machines.

 

It is ancient when you consider that tube technology came around the turn of the 20th century. Although improvements to design of tubes and tube circuits still continues in the audio world.

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post #11 of 20
12/22/12 at 9:18am

After looking on the kr-audio website, I was upset that the amps with those tubes have 3% of THD !

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post #12 of 20
12/22/12 at 10:10am
Tubes have much higher THD specs over their transistor counterparts. The trick is in the H - harmonic.

Tubes generally produce even harmonic distortion that is usually more pleasing to our ears. This distortion is what gives the "tube" sound.
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post #13 of 20
12/22/12 at 10:27am
Quote:
Originally Posted by rtaylor76 View Post

Tubes have much higher THD specs over their transistor counterparts. The trick is in the H - harmonic.
Tubes generally produce even harmonic distortion that is usually more pleasing to our ears. This distortion is what gives the "tube" sound.

 Yep but look at that old mcintosh 275 who has 0.5% of THD, the difference is huge, I don't see the point of getting a 16K amp to have so much distortion, even if it's euphonic, you can add distortion or "tube sound" yourself.

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post #14 of 20
12/22/12 at 10:45am

They didn't mention the purpose of the getter even briefly.

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post #15 of 20
12/22/12 at 10:46am
Quote:
Originally Posted by rtaylor76 View Post

Tubes have much higher THD specs over their transistor counterparts. The trick is in the H - harmonic.
Tubes generally produce even harmonic distortion that is usually more pleasing to our ears. This distortion is what gives the "tube" sound.

 

When you compare ONE triode tube to ONE Bipolar Junction Transistor, actually the tube is MORE linear.

 

Solid state line level amps may have 30 transistors and a lot of feedback, an "equivalent" line level tube amp may have two triodes and very little feedback.

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