NOS tubes on Stereomour glows differently

altec604e · 1717

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Offline altec604e

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on: March 12, 2014, 09:10:23 AM
Hello,

I built my Stereomour amplifier some time ago.

My 2A3 RCA NOS tubes glows differently.

One of them has a much more brighter blue glow than the other one.

To my ears both channels sound the same, but I shut the amp down quite shortly after seeing this -  and I am now awaiting answer from you before turning it on again.


I`m new to tubes so I`m posting because I do not know if this is normal behavior on NOS tubes - or if somethings wrong....


All help will be appreciated







Signal Source : Thorens TD 124 MkI / SME 3012 / Denon DL103

Setup : Quad 44 / Bottlehead Stereomour / Altec 604E in DIY 612C cabs


Offline Doc B.

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Reply #1 on: March 12, 2014, 09:13:43 AM
The blue glow is not a problem. Play away.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.


Offline altec604e

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Reply #2 on: March 12, 2014, 09:16:53 AM
Cool !

Will put it on right away .

Just out of curiosity : what is causing the difference in the brightness of the blue light ?

Thanks.

Signal Source : Thorens TD 124 MkI / SME 3012 / Denon DL103

Setup : Quad 44 / Bottlehead Stereomour / Altec 604E in DIY 612C cabs


Offline Natural Sound

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Reply #3 on: March 12, 2014, 10:00:35 AM
Cool !

Will put it on right away .

Just out of curiosity : what is causing the difference in the brightness of the blue light ?

Thanks.

The following link explains what you are asking.
http://www.thetubestore.com/Resources/Matching-and-other-tube-info/Blue-Glow



Offline altec604e

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Reply #4 on: March 12, 2014, 10:05:27 AM

Thank you so much !


Signal Source : Thorens TD 124 MkI / SME 3012 / Denon DL103

Setup : Quad 44 / Bottlehead Stereomour / Altec 604E in DIY 612C cabs