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Telefunken help

Discussion in 'Amps and Cabs [BG]' started by Stu L., Apr 7, 2004.


  1. Stu L.

    Stu L. Supporting Member

    Nov 27, 2001
    Corsicana, Texas
    I just received a few Telefunken tubes, and I'm not sure what the designations might be. I'm used to the common "12AX7" or "EL84" etc, but these have some other numbers that are throwing me off. They are

    -ECH81
    -EABC80
    -EF89
    -ECC85
    -EL34

    I know what the EL34 is, and I *think* the ECC85 is a 12A_7, but can anyone offer any help as to what the others may be? And any advice on how to test them? Thanks so much :)
     
  2. Stu L.

    Stu L. Supporting Member

    Nov 27, 2001
    Corsicana, Texas
    Oh, I just found an EM80, so any help with that too would be nice :)
     
  3. 12AX7 is the same as ECC83 European designation, as for the other tubes I don't think that they will be of much use to you except maybe the EL34.
     
  4. Stu L.

    Stu L. Supporting Member

    Nov 27, 2001
    Corsicana, Texas
    The ECC85 look to be built like a 12AX7, do you know anything about that one? Thanks for the help.
     
  5. Well, duh!!! :confused: Who doesn't know this stuff??

    the -ECHH81 is the same as a 6AJ8
    -EABC80 is the same as 6AK8
    -EF89 = 6DA6
    -ECC85 = 6AQ8
    -EL34 = Pretty self explanatory.

    Just kidding! I stole all those numbers off this page:

    http://www.vacuumtubesinc.com/new5.html

    There's more variations of vacuum tubes than you can shake a stick at. Just because it looks like a 12ax7 doesn't mean it has the same pin outs as any other tube. Good luck finding a use for them. I mean seriously. And be careful handling them, every Telefunken I've had the lettering comes off if you breathe on them!
     
  6. Stu L.

    Stu L. Supporting Member

    Nov 27, 2001
    Corsicana, Texas
    Thank you very much. I searched all over the net and couldn't find a "Tubes for Dummies" ;). If nothing else, I can use these tubes for fishing bobbers, it is that time of year :D.

    How would you go about determining the pinout of a tube?
     
  7. Plug the tube number into here: Tube Search

    Most of the numbers have pinout diagrams.
     
  8. Stu L.

    Stu L. Supporting Member

    Nov 27, 2001
    Corsicana, Texas
    Thanks PSG. I'm learning very quickly that tubes are cool :)
     
  9. Bob Lee (QSC)

    Bob Lee (QSC) In case you missed it, I work for QSC Audio! Gold Supporting Member Commercial User

    Jul 3, 2001
    Costa Mesa, Calif.
    Technical Communications Developer, QSC Audio
    Except when you're using them. Then they're hot. ;)

    Sorry, I couldn't resist that. :hyper:
     
  10. Stu L.

    Stu L. Supporting Member

    Nov 27, 2001
    Corsicana, Texas
    Ya know, I almost said that myself
    :D