Best looking tube?

Rob11966 · 25th April 2009, 09:53 AM

Frivolous question I know but one of the features that we all love is the look of glowing tubes.

I am thinking of shape and glow and considering both driver and power tubes.

My next build will be guided by the answers! I know this is bad

SY · 25th April 2009, 10:01 AM

http://www.pmillett.com/glowing_hybrid.htm

Gordy · 25th April 2009, 10:57 AM

Quote:

Originally posted by Rob11966
Frivolous question...
I know this is bad

Yes; you are a very bad, bad boy.

Oh alright then...

304TL , especially with full enclosure as done by Moth (http://www.mothmuseum.com/mothaudio/m304tlhi.html) and Alum Rock (http://www.alumrocktech.com/photos/1a.shtml).

6C33 , but not particularly linear according to the datasheet, so best kept as a voltage regulator.

Almost anything from Sophia and Emission Labs (http://www.sophiaelectric.com/setube.htm, http://www.emissionlabs.com/html/products/products.htm)

jackinnj · 25th April 2009, 12:13 PM

Well, the ne plus ultra of my ham-radio youth was the 4CX250:

And I used this beauty, a 2E26 in my first 6m amplifier --

rcavictim · 25th April 2009, 12:39 PM

I have been putting parts aside to make a high powered monoblock for subwoofer based on a pair of 450TH's. That is the large beauty in the far right of the attached photo. Moving towards the left 833A, 805, KT88. I currently enjoy a SET stereo amp using the 805.

mashaffer · 25th April 2009, 01:31 PM

That 703A is a fascinating tube. I think that is the first triode data sheet I have seen with no mu specified anywhere. What kind of voltage gain do you get with it?

astouffer · 25th April 2009, 02:28 PM

Quote:

That 703A is a fascinating tube. I think that is the first triode data sheet I have seen with no mu specified anywhere. What kind of voltage gain do you get with it?

I have a pair of those tubes and noticed the same thing. There's also a mistake on the physical dimensions in the datasheet. This page claims the mu is 12. Always wanted to use a CCS or choke load this as a driver for something larger. As far as sockets go you need to have access to a machine shop.

http://www.r-type.org/exhib/aaa0555.htm

TubeHead Johnny · 25th April 2009, 06:07 PM

I'm not into the exotic types, but I think the old Tung-Sol coke bottle 6550's look kinda sexy, especially under dim lights and a few glasses of wine!

tvi · 25th April 2009, 07:12 PM

Pedersen S3/500 ?

Regards
James

6f6 · 25th April 2009, 07:16 PM

Magic Eye tubes, such as 6U5, were no doubt selling point for radios in the 30's.

25th April 2009, 09:53 AM	#1
Rob11966 diyAudio Member Join Date: Jun 2007 Location: Australia	Best looking tube? Frivolous question I know but one of the features that we all love is the look of glowing tubes. I am thinking of shape and glow and considering both driver and power tubes. My next build will be guided by the answers! I know this is bad

25th April 2009, 10:01 AM	#2
SY diyAudio Moderator Join Date: Oct 2002 Location: Chicagoland Blog Entries: 1	In the Small Signal category... http://www.pmillett.com/glowing_hybrid.htm __________________ If there's a sucker born every minute, where do the rest of them come from?

25th April 2009, 01:31 PM	#6
mashaffer diyAudio Member Join Date: Jun 2004 Location: Indiana	That 703A is a fascinating tube. I think that is the first triode data sheet I have seen with no mu specified anywhere. What kind of voltage gain do you get with it? __________________ If We The People refuse to hear the truth we will be ruled by liars.

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25th April 2009, 12:13 PM	#4
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	Well, the ne plus ultra of my ham-radio youth was the 4CX250: And I used this beauty, a 2E26 in my first 6m amplifier --

25th April 2009, 06:07 PM	#8
TubeHead Johnny diyAudio Member Join Date: Jan 2005 Location: The emerald city, Seattle, WA.	I'm not into the exotic types, but I think the old Tung-Sol coke bottle 6550's look kinda sexy, especially under dim lights and a few glasses of wine!

25th April 2009, 07:16 PM	#10
6f6 diyAudio Member Join Date: Oct 2006	Magic Eye tubes, such as 6U5, were no doubt selling point for radios in the 30's.

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