G.T. Power reducers V THD Yellowjackets

Discussion in 'Amps and Cabs' started by Sol, Jul 24, 2006.

  1. Sol

    Sol Member

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    I've had a set of THD Yellow jackets for a while now, I'm using them with
    JJ EL84, in a Marshall 50Watt Lead@Bass top and a 2x12 cab.

    I'm not sure how I feel about them, there noisy, I guess thats the class A thing ?
    The transition to overdrive is not especially sweet, and would like to hear from those that have tried the Groove Tubes version , or compared the two?

    Any concensus as to which is the better for smooth transition to overload?

    What's your opinion on these tube converters generally, a good idea, or
    should I be looking elsewhere for lower volume overdrive without pedals.

    Cheers,
    Sol
     
  2. Jerrod

    Jerrod Silver Supporting Member

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    Myles, that "test" is for one amp (and a selection that even the tester questioned) and one set of ears. Far from conclusive in my opinion, and a little smelly as well.
     
  3. Sol

    Sol Member

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    Myles, thanks for the pdf, the Groovetubes came out on top of that test
    IMO.
    Anyone tried both of these converters, and done there own side by side ?
    What did you think?

    If you just went with the G.T., are you still using them?

    Thanks all,
    Sol
     
  4. myles111

    myles111 Member

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    It is one piece of literature that I had on file.

    Yes ... a very limited test.

    I personally have used the Yellow Jackets myself for a number of years and like them very much.
     
  5. myles111

    myles111 Member

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    Sol,

    Just because something came out at the top of one test I would still like to have some more input from others. I have used Yellow Jackets for years and love them.
     
  6. Sol

    Sol Member

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    Yes, the Y.J's are pretty good, the best results I've had is combining them
    in a 100watt Superlead.
    I put the two Y.J's in the middle slots and then the remaining EL34's in
    the outside positions.

    The lowered voltage on the EL34's gives what I'd assume to be the same effect as a variac, still pretty loud though !

    Okay, here's a thought for the more tech minded: EL84's and 6V6gt operate
    at simmilar voltages, right ?
    What if, instead of the EL34's, we sub them for 6V6gt, they would be operating at a voltage more suited to that type than the EL34, which I'm
    thinking might not be liking the reduced current and voltage..

    So...Two Yellow Jackets with EL84, and two 6V6's in a Plexi...could be a plan:cool:

    Sol
     
  7. myles111

    myles111 Member

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    The voltages that are lowered is the voltage to the tube in the device and NOT the amp's voltages.

    Do not think for a second that you can plug 6V6's in a Marshall.
     
  8. Jon

    Jon Member

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    So are you saying that Myles shouldn't have posted it?
     
  9. Ed DeGenaro

    Ed DeGenaro Supporting Member

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    Ya know anyone else in this business posting a test that includes theirs as well as competing products would have really pissed me off. In Myles' defense I have to say that he has enough times said positive things about THD that I can hang with him actually trying to make Aspen some money. :)
     
  10. myles111

    myles111 Member

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    Jon .... there are some folks here that jump all over if I ever have anything with GT in it. They seem to overlook the links I send for other folks that I post. If somebody sends me a review on the Yellow Jackets I would be more than happy to post that as well.
     
  11. Sol

    Sol Member

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    Myles,
    Thanks for that, I thought that the voltages would be lowered on all positions,
    So I wont be trying the 6V6 thing after all.

    I may try finding some EL84's that break up a little earlier, and see how that works in my amp.

    I've since found another type of converter to go with the Yellowjackets and
    GT Power Reducers, Tone Bones, I think the name is..I'll look into them, they do a Pentode and Triode version, could be worth a look in.

    Cheers,
    Sol
     
  12. myles111

    myles111 Member

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    Going to triode mode will soften things and drop the output. That could be just the ticket for you.
     

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