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2359glenn | studio - Page 370

post #5536 of 10927

So I turned the amp back on. 

 

I really wish I knew how to take low light shots with a camera.  This is the coolest thing I've seen since the first time I ever saw a tube light up.  The blue is definitely on the inside of the glass itself, it's not coming from the filament or the plate.  Now that I've looked more closely it actually swirls and snakes around on the glass a bit.  It's also twice as bright as it was last time, the blue is almost as prominent as the filament glow with the lights in the room off.

 

They seem to sound normal.  Cool stuff.

post #5537 of 10927

Eye and Ear candy! k00l!

post #5538 of 10927


Best I can manage.
post #5539 of 10927

Here's a picture of my PrimaLuna with a quad of 6550C Russian tubes and all of them have blue swirls. They seem to be okay since they've been like that for the past 3 years.

AppleMark

post #5540 of 10927

From what I was reading this seems to be more common with pentodes and beam tetrodes than it is with triodes.  Certain types of blue can mean gas and that the tube is no good, I guess if it is a cloudy blue coming from inside the plates.  Glenn told me one of the National Union tubes I sent him for testing the amp started to glow blue from gas so I thought maybe blue was bad period for 45 tubes.  Since what this Tung Sol seems to be doing is no big deal I'm just going to sit back and enjoy the light show.

post #5541 of 10927

Here's some info on tubes that have that blue glow:

http://www.thetubestore.com/Resources/Matching-and-other-tube-info/Blue-Glow

 

post #5542 of 10927
Thread Starter 
Quote:
Originally Posted by Xcalibur255 View Post
 

So I turned the amp back on. 

 

I really wish I knew how to take low light shots with a camera.  This is the coolest thing I've seen since the first time I ever saw a tube light up.  The blue is definitely on the inside of the glass itself, it's not coming from the filament or the plate.  Now that I've looked more closely it actually swirls and snakes around on the glass a bit.  It's also twice as bright as it was last time, the blue is almost as prominent as the filament glow with the lights in the room off.

 

They seem to sound normal.  Cool stuff.

 

Ooh... I wanna see! Got a DSLR?

:popcorn:

post #5543 of 10927
Thread Starter 
Quote:
Originally Posted by jc9394 View Post

That blue glow is pretty common with 596.


PAS_4099.jpg

 

The British are coming :confused: 

 

Very nice, jc9394! :wink:

post #5544 of 10927
Quote:
Originally Posted by Clayton SF View Post

Here's a picture of my PrimaLuna with a quad of 6550C Russian tubes and all of them have blue swirls. They seem to be okay since they've been like that for the past 3 years.

I finally made it to the new local hifi shop today. They had the same PrimaLuna loaded with KT88 s driving some Klipsch RF-7II. I was really impressed. I've seen the ads for the amp in Stereophile and always wanted to check it out. I'm going back with some of my own music next time.
post #5545 of 10927

It should be fine to use Tyrell.

Check this article:

 

http://tubesound.com/2008/09/30/brown-or-black-getter-flashing-does-not-mean-used/#more-333

 

Eric I thought I was following.................. 

post #5546 of 10927
post #5547 of 10927

ive never seen a blue glow on any of my 596 or any of my other tubes. only noticed it once with my GEC 6AS7G curved base.

post #5548 of 10927
Thread Starter 

None of my tubes either. Maybe I'll set up the Nikon for Time-lapse fotos...

post #5549 of 10927
The tubes I own that glow blue are:

596, JJ 300B, Sovtek 5U4g, 6550C

Some of them glow blue more than others.
post #5550 of 10927

i guess my 596 isn't mighty :(

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