Post pics of your glowing tubes

[quadtech]

Thanks! It is my DIY amp - VTA driver board, Trafomatic
OPTs and PT, SS rectified.
The chassis was hand made for me by a local sheet
metal professional - no CNC! The slots are
made by drilling holes at the ends and some kind of
die punch for the slots.

 

[Jeb-D.]

 

[richwalters]

pckid212
Far too much blue in those ElectoHarmonix 88's: Apart from camera over-exposure: What's the cause of this type of blueness ??

 

[boywonder]

Nice amp Jeb! Is that another DIY amp? If it is, I'm curious about the front panel lettering.....

 

[piero7]

😀

 

[Mr. Triatic]

An externally hosted image should be here but it was not working when we last tested it.

 

[Rob11966]

BTW Rob, whereabouts in Australia are you?

Hi Mellowtone,

Randwick, Sydney.

 

[Jeb-D.]

Nice amp Jeb! Is that another DIY amp? If it is, I'm curious about the front panel lettering.....

Thanks! Yes, it is a DIY based on 6as7g. The etching on the faceplate is derived from my last name (DePaiva). People referred to us as the DP's back in the day. The faceplate was too plain beforehand.

 

[968driver]

Eimac 450TH

Hi,
this one Eimac 450TH of the Magma mono power amplifier from N.A.T. (Serbia)
produces 160 W pure class A in 4 or 8 Ohms.

Kind regards, 968driver.

 

[boywonder]

Thanks! Yes, it is a DIY based on 6as7g. The etching on the faceplate is derived from my last name (DePaiva). People referred to us as the DP's back in the day. The faceplate was too plain beforehand.

Is the control/volume lettering dry transfer with clear coat, silkscreen, etc? I see that your logo is etched.....

 

[Jeb-D.]

Is the control/volume lettering dry transfer with clear coat, silkscreen, etc? I see that your logo is etched.....

It's etched with black color fill. I had front panel express do it.
Front Panel Express - Custom Front Panels with free Front Panel Designer - Home

 

[Geek]

The 6V6 in my "Roctal" guitar amp 🙂

Cheers!

 

[rkoonce]

71A P-P amp

My 71A push-pull amp. 56 drivers, 82 rectifier, VT105 regulators.

An externally hosted image should be here but it was not working when we last tested it.

 

[jrenkin]

Wow, just starting to play with ordinary tubes and to see all this esoteric stuff. This hobby just gets more crazy all the time. What are the tubes Piero7 is lighting up? And what the heck is an Eimac 450th? That is an awesome art piece. Does it sound as good as it looks?

 

[Golana]

Phillips branded;

 

[Cassiel]

Way to go rkoonce. Light blue, purple and orange... only pink is missing.😀

 

[Tubelab_com]

What are the tubes Piero7 is lighting up?

It is a Russian GU29 and like my 211 it is not supposed to do that. It is a gassy tube. Details in this thread.

http://www.diyaudio.com/forums/tubes-valves/150649-gu29-damaged.html

And what the heck is an Eimac 450th?

Eimac makes big transmitting tubes for radio and TV stations, ham radio and short wave broadcasting. The 450th is one of their small ones. Several adventuresome DIYers have become bored with common audio tubes and have employed some of the smaller transmitting tubes in audio applications. Most transmitting tubes are not well suited for audio, but some work very well. The 211, 845 and 833A tubes shown in my glowing post are also transmitting tubes.

 

[Evenharmonics]

The internal glowing of some SED EL34s in the Dynakit VTA-70

I use SED EL34 for my Dynaco amp as well. That picture must have been taken soon after turning it on. Mine does that too but the blue glow disappears a few minutes later.

Bizarre blue glow from a pair of Shuguang 300-** in a Tubelab SE

How do those mesh sound compared to other 300B?

 

[Pckid212]

pckid212
Far too much blue in those ElectoHarmonix 88's: Apart from camera over-exposure: What's the cause of this type of blueness ??

Not sure. Found that picture during a Google search and it got me interested in tube glow.

 

[TheGimp]

6P1P-EV doing the Blue Glow on the Screen thing.


I guess I shouldn't be surprised at all the tubes exhibiting a similar phenomenon.