EL34's???

Discussion in 'Amps and Cabs' started by Laroosco!, Oct 6, 2008.

  1. Laroosco!

    Laroosco! Member

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    The SED's went bad in the 50 watt Plexi clone I have.

    I put in a spare set of GT E34L's in there for the time being. I'm not sure I'm crazy about these tubes. They have a looser feel than the SED's.

    I was thinking of trying a set of KT77's. I've liked these tubes a lot in other amps but not sure how they would work sound in this one

    What are you guys using in your Marshall's?(or clones)
     
  2. Luke

    Luke Senior Member

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    Real vintage Mullards
     
  3. psb962

    psb962 Member

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    SEDs.

    But if you are into switching tubes around, one reason they might be going bad is if you arent rebiasing them correctly
     
  4. Laroosco!

    Laroosco! Member

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    The amp is cathode bias. It's not an exact plexi clone.

    The SED's that were in it for years before I bought it. The GT's were just a pair that was lying around. They are far from brand new.

    Sorry guys, I'm not buying Mullards. I should have said that in the first place. Not at the price they are going for.

    The SED's sounded great. Maybe I will stick with them. Keep ther suggestions coming
     
  5. RCCola

    RCCola (|@ / \ @ |.) Gold Supporting Member

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    Siemens - they came with my Marshall Silver Jubilee and sounded great. 20 years and still going strong.

    Just bought a quad for my Super Lead.
     
  6. soldano16

    soldano16 Member

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    The NOS Siemans can be had for a bit less than $100 a matched pair. Pretty good NOS value.
     
  7. sinasl1

    sinasl1 Member

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    Gt EL 34m are really nice.
     
  8. Sparky6string

    Sparky6string Member

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    Shuguang El34b. Awesome tubes.
     
  9. Mr.Hanky

    Mr.Hanky Supporting Member

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    Werd, get the Siemens.
     
  10. reaiken

    reaiken Member

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    For new production, you can't go wrong with the SED's. I'd stick with them.

    Stay far away from the New Sensor fake "Mullard" EL34 - their lifespan is usually measured in minutes, at least from the batch I tried...absolute rubbish QC.

    JJ E34L are robust, but not quite as toneful as the SED, in my opinion. However, they don't "look" right - the rounded top bothers me. :) They are available in blue glass, though, which makes up for it. ;)
     
  11. LVC

    LVC Senior Member

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    Yep --- I picked up a Quad for my Bludo from

    http://www.angela.com/

    could not be happier with results.
     
  12. Rex Nomad

    Rex Nomad Member

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    +1... I've got a quad of chinese glass in a Marshall 2203 and they sound great.
     
  13. SQUAREHEAD

    SQUAREHEAD Supporting Member

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    Siemens!
    I like 'em more than Mullards for Marshalls.

    Kw
     
  14. Laroosco!

    Laroosco! Member

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    I was curious about the Shuguangs because I really liked their KT66's in my Route 66 better than the GT's.
     
  15. dumbell78

    dumbell78 Member

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    +2 Got them in my 2555 and they are great!
     
  16. Guinness Lad

    Guinness Lad Silver Supporting Member

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    I put these in my Matchless, I like them a lot more then the KT77's, this GT is a really good sounding tube.
     
  17. studiodunn

    studiodunn Member

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    RFT's and be done for many years
     
  18. myles111

    myles111 Member

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    You mention that the amp is cathode biased. Do you know the plate voltage of the amp and where the tubes are running as far as plate current? Many people think that cathode biased amps are self biasing and do not care about where the tubes run but this is actually not the case. If you have tubes that are overly strong and not to general spec for the tube they will run hot and have low life and a harsh tone. If they are weak they will sound grainy and not develop full output.

    If you let me know your B+ voltage (off pin 3 of an output socket) I will be happy to let you know the range you should expect to see for plate dissipation at idle on something like a bias tool or bias probe.
     
  19. Laroosco!

    Laroosco! Member

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    I'll find out. Thanks
     
  20. myles111

    myles111 Member

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    You are welcome.

    I did not see where you are from before I started writing this but if you are anywhere near me I'd be happy to measure the B+ and also the plate current for you at no charge.

    Myles

    ....... I went and looked at your location ... not exactly next door :(

    Oh well .... if you are ever in the area the offer still stands. :)
     
    Last edited: Oct 7, 2008

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