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Tube Talk

Discussion in 'Amp Building/Technical/Repair' started by Paul Running, Apr 16, 2020.

  1. Paul Running

    Paul Running

    Joined:
    Apr 12, 2020
    Location:
    Arnprior
    Sorry folks, it's off the topic that I have intended: at the top of the thread I made reference to overload characteristics of a tube as an objective view. I did not intend it to be a taste test. I was hoping to see some feedback from experimenter/builders who have made new discoveries in the application of tubes in musical instrument amplifiers from a scientific standpoint. I am not trying to re-invent the wheel here and I believe that their is some characteristic of the tube that has yet to be discovered. If you wish, I am open to a private conversation.
     
    jb welder likes this.
  2. zdogma

    zdogma Gold Member

    Joined:
    Mar 21, 2006
    Location:
    Ottawa, Ontario
    I want to talk about the crystal lattice and fragile harmonics!!!!
     
  3. zdogma

    zdogma Gold Member

    Joined:
    Mar 21, 2006
    Location:
    Ottawa, Ontario
  4. Paul Running

    Paul Running

    Joined:
    Apr 12, 2020
    Location:
    Arnprior
    Globally, there seems to be alot of negative comments on his video and yet most of his amplifiers are fetching huge sums of money. Could it be that some people are envious of his accomplishments? Really, it is a theory that he believes and who are we to disprove the man...can you be 100% sure that his theory is incorrect?
     
    Last edited: May 6, 2020
  5. Paul Running

    Paul Running

    Joined:
    Apr 12, 2020
    Location:
    Arnprior
    The term "valve" is a more accurate term because a true vacuum is a perfect insulator which has infinite resistance and by the application of Ohm's law: no current would flow; elementary school mathematics...if you divide any number with infinity other than infinity, you will get zero. A valve could not function in a true vacuum.
     
  6. guitarman2

    guitarman2 Gold Member

    Joined:
    Aug 25, 2006
    Location:
    Brantford, Ontario
    Does anyone know what ever happened to him? I used to see him fairly often but not for many years.
     
  7. Lincoln

    Lincoln Gold Member

    Joined:
    Jun 2, 2008
    Location:
    Fort Saskatchewan, Alberta
    I noticed Electro-harmonix in Russia has started marketing 7025 tubes. I bought one to try out "just because". The etching on the tube says 7025EH. Must be a special Eddie Van Halen signature model. ;)
     
  8. Paul Running

    Paul Running

    Joined:
    Apr 12, 2020
    Location:
    Arnprior
    That would be the 7025EVH model.:cool:
     
  9. Lincoln

    Lincoln Gold Member

    Joined:
    Jun 2, 2008
    Location:
    Fort Saskatchewan, Alberta
    I couldn't afford the 7025EVH. I just got the plain old 7025EH.........
     
    Paul Running and _Knighthawk_ like this.
  10. Lincoln

    Lincoln Gold Member

    Joined:
    Jun 2, 2008
    Location:
    Fort Saskatchewan, Alberta
    Anything to say about Russian 6N2P (same as 12AX7) tubes? I picked up a couple just to see what they are all about. Yes, I know the wiring is different & I can handle that. 6 volt heater circuit using only pins 4 & 5, pin 9 is a shield that needs to be grounded.

    I'n going to try them in some simple builds and see how they work.
     

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