6V6s in a Hot rod DeVille

Discussion in 'Amps and Cabs' started by brentrocks, Feb 26, 2012.

  1. brentrocks

    brentrocks Guitar Hack/Player Gold Supporting Member

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    I picked up a Hot Rod DeVille 4x10 used at my local GC this week, got a killer deal! Great sounding amp, but EXTREEMY LOUD!!!! Especially for basement use. Somebody brought to my attention that you could swap out the 6L6s for 6V6s, lower the wattage to around 30w and make the ear bleeding stop..:D

    I ordered the tubes yesterday and i also pulled off the back cover to find the bias test point and bias pot....looks like it will be a easy transformation.

    [​IMG]
     
  2. ekkybedmond

    ekkybedmond Member

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    Ask Bob at Eurotubes, the JJ 6V6 will probably survive the ordeal
     
  3. brentrocks

    brentrocks Guitar Hack/Player Gold Supporting Member

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    thats who i bought my tubes from and i read stuff on his website detailing this swap...that was one of the reasons i decided to do it.
     
  4. brice

    brice Member

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    I own 2 Deville's and would love to be able to cut the power. Could you provide the details?? Thanks, Brice
     
  5. modernp

    modernp Member

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    Try a tapered volume pot also.
     
  6. 335guy

    335guy Member

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    Yes, because the JJ 6V6 is a sorta hybrid tube ( part 6V6, part 6L6 ), Bob has used them in place of 6L6's with success. I have tried it as well. But it doesn't lower the volume dramatically, just a little.
     
  7. 335guy

    335guy Member

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    Do those Devilles even have bias test points and/or bias adjustments? I thought they were fixed biased amps using a resistor, meaning, no bias adjustment available.
     
  8. NashSG

    NashSG Member

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    You might want to look into a set of THD Yellowjackets, they allow to run EL84s on a 6L6 amp. Never used them myself, but I have heard them in a Fender Twin and they sounded pretty good.
     
  9. Marshall Man

    Marshall Man Member

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    I run JJ6V6s in my DeVille. The amp is still loud as ****! The bias is adjustable on these amps just follow Bob's instructions and it is super easy.
     
  10. SGspecial

    SGspecial Member

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    What bias setting did you use with the 6V6's?
     
  11. Marshall Man

    Marshall Man Member

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    I forget, but it is whatever bob recommends on his site as he gives step-by-step instructions.
     
  12. brentrocks

    brentrocks Guitar Hack/Player Gold Supporting Member

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    i think it was in the 30-40 range
     
  13. ProToneThinline

    ProToneThinline Member

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    I had a pair of those in my old Blues Deluxe for a while. I was quite surprised at how little the volume changed. The tone changed quite a bit, but the voolume was almost the same.
     
  14. brice

    brice Member

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    Yes, the Deville is adjustable. Here's a video of the procedure:

    http://www.youtube.com/watch?v=19IUadZJf-c
     
  15. tuubes

    tuubes Member

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    try running the speakers @( 32 ohms) 4 X 8ohms in series...
     
  16. brentrocks

    brentrocks Guitar Hack/Player Gold Supporting Member

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    i got the 6V6s yesterday...installed and biased them....the amp sounds great! not a ton of relief in the loudness dept. but the cleans are crisp, the OD is AWESOME!!! Really fat tone....great clairity.
     
  17. hktk

    hktk Member

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    If its just the volume that is the issue, there are other ways around it than swapping the tubes.

    My understanding when it comes to the Hot Rod series is that part of the volume issue (off or ear destroying loud) is the type of volume pot they have in the master, I believe its a linear pot. There is a mod that i think changes out the linear pot for an audio pot making the amp much more useable and easier to adjust volume/play at lower volumes.

    Another option is to put a volume pot in the FX loop and use that to make your volume more adjustable. I have done this with both a HRD and 4x10 Deville with good results.
     

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