DUMBLE! What are the best EL34s for them?

Discussion in 'Amps and Cabs' started by Tag, Dec 22, 2009.


  1. Tag

    Tag Gold Supporting Member

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    Mine has Russian power tubes, and I want the smoothest, sweetest sounding NOS EL34s you can get. What would they be? THANKS!! :beer
     
  2. never-enough

    never-enough Member

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  3. Tag

    Tag Gold Supporting Member

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    LOL!!!

    I want ANTI Mullards! None of that glassy harsh high end that Mullards have.
     
  4. Jason_86_951

    Jason_86_951 Supporting Member

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    Find a good set of NOS 6CA7's to put in there :)
     
  5. JDJ

    JDJ Supporting Member

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    Let me check mine and see what I have in it......








































    :D
     
  6. jcs

    jcs Member

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    Hmm, Mullard EL34 have a harsh high end?

    I dont think audiophiles that use them in high end audio would agree with that statement.

    I would say if you can afford a Dumble amp you should buy some different EL34 such as Sylvania or GE big bottle 6ca7, a pair of RFT/Siemens (earlier production the better), a pair of early production Tesla EL34 as well and decide for yourself.

    I dont know what the plate volts and screen volts are on your amp and how hot of bias is recommended by Mr. Dumble but i would think 60-65% dissipation would be a good start.
     
  7. never-enough

    never-enough Member

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    :facepalm i forgot....
    you and i like totally different types of treble frequencies.
    :beer
     
  8. SuperReverb2

    SuperReverb2 Member

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    I recently re-tubed an EL34 Chieftain head for a friend of mine. Most of my experience had been with 6L6 amps so I relied on Mike at KCA NOS Tubes for some advice. His recommendation was the Siemens EL34. Not sure how they would sound in your Dumble, but they sure sounded great in the Chieftain. Very smooth, nice mids, and not harsh by any stretch of the imagination. I also used one of my Tech Tube E813CC's in V1.

    :)
     
  9. lv

    lv Supporting Member

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    I ran Siemens EL-34s in my Glaswerks - sounded great and didn't negatively impact the clean tone. They were very smooth, though my amp has the hrm trimmers dialed pretty smooth anyway. They def didn't make the amp brighter in any way.

    These are still reasonably priced, I think I paid $200 for a matched quad.
     
  10. anais

    anais Member

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    From what I have been told from Dumble owners/cloners- the power tubes are not the focal point of the 'tone' for the overdrive special. I think Gil Ayan has told me something once about the most important part being the phase inverter bias control.. conversation from a WHILE ago. The pre amp is where it shines.. try some Amperex or Tele tubes.. maybe even a mullard ECC83:rolleyes:

    ANYWAY. If you have not tried Mullards in this amplifier you really should, and I am surprised, TAG, beings that you have spent a bunch of coin on this amplifier that you didnt research a good power tube that it likes :D

    But lets be honest here, a good set of mullard might do you good.. try some old Tung-Sols if you havent. Tele's are always an amps best friend.. maybe some GE or Sylvanias? If you want expensive just get a set of Teles and makes some clips- Im sure you will get a few hundred posts on the thread!

    Wish you the best of luck, bro.
     
  11. NFB

    NFB Senior Member

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    Tag,

    You need a quad of these....ou........la.........la

    [​IMG]

    [​IMG]
     
  12. kimock

    kimock Member

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    Pictured above would be the anti-Mullard for sure. . .
     
  13. PFunk

    PFunk Member

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    Dems it, above.
     
  14. Billion81

    Billion81 It'd be a whole lot cooler if you did. Gold Supporting Member

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    I recall that interview with Andy Brauer about the JCM60s and 30s in VG and he specifically called out the 6CAs as being a 6L6 like version of the EL34 and that it delivered the "brown sound" better than other varieties....at least in the Marshall. Could be just the ticket TAG!

    The Mullard XF2s and 4s get my nod for Marshalls. It could be cool to hear those in this amp. They could react totally different to how they would in that set up.

    JJs also get a good nod of current builds.

    Do you like what's in it now? Why the change?
     
  15. supersonic1414

    supersonic1414 Silver Supporting Member

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    How the hell would we know? You are the only one with a Dumble around here and you know that
     
  16. Tag

    Tag Gold Supporting Member

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    OK guys! You sold me. Where do I get them? maybe I should pick up a set of those AND Mullards and go between both? What aboyut telefunken power tubes? Do they make them? If so, what do they sound like? I have tons of Tele,GE, and RCA 12Ax7s
     
  17. Tag

    Tag Gold Supporting Member

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    Oh yea, thats right! :D


    :banana:banana:banana:banana:banana
     
  18. kimock

    kimock Member

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    Yeah, that's pretty much the consensus on the Sylvania 6CA7's.
    The only potential down side for the Tag application is that they're LOUD!
    Try to find some of those old Mesa Boogie branded 6CA7's, the green paint ones if you can. If the paint hasn't burnt white, and you can't just wipe it off with your thumb they'll probably last forever.
    I'm still running some from the early 80's. . .
     
  19. johnc

    johnc Member

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    I like the Siemens EL34.
     
  20. Billion81

    Billion81 It'd be a whole lot cooler if you did. Gold Supporting Member

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    Check in with Charles Kittleson @ Vacuum Tube Valley out here in LA. He'll be able to talk you through all of this I suspect and will also likely have any tube you care to try. I'm also sure he'll have info on the Telefunken's.

    Also ask about the SED-Winged C SVEL34s (MIR)

    his website is:

    http://vacuumtube.com/
     

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