stock marshall tube codes

Discussion in 'The Workbench' started by big dooley, Nov 26, 2010.

  1. mickeydg5

    mickeydg5 Well-Known Member VIP Member

    Joined:
    Sep 30, 2011
    Messages:
    16,270
    Likes Received:
    5,586
    Location:
    US of A
    "No Selection" means the preamp tube was not selected for a specific purpose. So it is an average or standard used tube as you put it.
    Selected tubes would be for gain or microphony level.
     
  2. dan_tramble

    dan_tramble Member

    Joined:
    Mar 25, 2014
    Messages:
    109
    Likes Received:
    19
    Location:
    Dartmouth,NS CANADA
    I have a couple of the gold "high micropony" tubes..

    Does this mean they have a high noise floor? What position would you use that tube in a amp?

    I have some red "low micropony" ones plus a half dozen of the standard 00055 white ones.

    Thanks
     
  3. Matus

    Matus New Member

    Joined:
    Jul 29, 2015
    Messages:
    1
    Likes Received:
    0
    Hi everyone..new to this forum! Owner of VM2466 which is currently waiting to be repaired :/ great amp tho!

    Anyway...as i was messing about trying to find out what's up with it, I pulled out all tubes to check them and that's what brought me to this thread...

    I have a ecc83 0066 in V1 and the rest are 0055...i'm about to change them too but I couldn't find any info on which is the right/better type of tube to use or of it's ok to mix and match like I had?!

    Thanks guys!
     
  4. EADGBE

    EADGBE Active Member

    Joined:
    Dec 13, 2009
    Messages:
    284
    Likes Received:
    61
    I have one like this. It says Marshall on it and it appears to be an EI.
     
  5. grainman

    grainman Active Member

    Joined:
    Feb 10, 2017
    Messages:
    161
    Likes Received:
    106
    Location:
    Canada
    i had stock tung sols el34 in my 1959slp is it current?
     
  6. Mark V

    Mark V New Member

    Joined:
    Jul 23, 2017
    Messages:
    7
    Likes Received:
    1
    My Red logo Marshall valve ECC83 is called vlve-90067. Are you saying this is the JJ low ?
     
  7. Herman Toothrot

    Herman Toothrot New Member

    Joined:
    Jul 26, 2017
    Messages:
    1
    Likes Received:
    0
    Hi! Some days ago, I was offered a matched quartet of 6550 marshall stock valves in a Spanish local shop, they were coded VLVE-00033, so I know they're winged "C" Svetlana. They also had a brown dot sticked on its base. I suppose these serve as markers for matching purposes, following some kind of color code. Does anyone knows if those colors are associated with some kind of values that should be taken into account in the re-biasing?

    Ps. English is not my mother tongue, sorry for any mistakes.
     
  8. mickeydg5

    mickeydg5 Well-Known Member VIP Member

    Joined:
    Sep 30, 2011
    Messages:
    16,270
    Likes Received:
    5,586
    Location:
    US of A
    Marshall does not color code power tubes as far as I know. So the brown stickers may indicate testing my another party.

    Winged C Svetlana tubes are good/great as long as they have not been worn out.
     
  9. deckard1

    deckard1 Member

    Joined:
    Feb 13, 2016
    Messages:
    71
    Likes Received:
    16
    Location:
    Los Angeles, California
    I emailed Marshall tech support last week and the senior tech there said the new DSL's use TAD Mullard tubes.

    Just mentioning it.
     

Share This Page