Sunday, 7 January 2018

Nuverdrive+

A different overdrive that uses a Korg Nutube.
If you live in UK you can find them here.
Original project and schematic available here.

The only sample I could find starts at 2:15 (first version without Tone knob)



18 comments:

  1. Just ordered one to try this out. Let you know how it goes. Cheers Alex.

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  3. Test Player is..

    Shinji Wajima - Ningen Isu

    https://youtu.be/OgAUT4Y7Dp8

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  4. All youtube examples sounded really meaty.
    So this is just an IC amplified signal followed by a tone control pushing 2 x cascading triodes, right?.
    So curious about this thing.

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    1. Reading PRR's posts on this DIYSB thread may cure your curiousness.
      http://www.diystompboxes.com/smfforum/index.php?topic=109894.msg1006252#msg1006252
      +m

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    2. That´s exactly what I needed, doctor ;)
      Thanks so much!

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    3. "The cure for curiousness" That's a good one!

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  5. I would like to express my gratitude for your generosity for folks who must have help on this study. Your personal dedication to passing the solution all-around was extremely important and have in most cases allowed professionals just like me to attain their endeavors. Your own warm and friendly facts means much to me and much more to my office colleagues. Warm regards; from everyone of us. bass guitar queensland

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  6. This really peaks my interest. Did anyone have a go at it? I might soon, will order the socket and the nutube.

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  7. Ok, i verified this then managed to kill my Nutube. The legs/pins are quite flimsy and somehow i managed to damage pin 7 to the point that it broke off right were it joins the glass, Bugger! Anyway it works and sounded really good up until that point. Bias on trimmer was almost exactly in the middle. I am definitely going to buy another one or two as i was rather impressed by it. Would like to see an amp vero when a schematic pops up. Seemingly the new Vox MV50s use the Nutube and are meant to be pretty good.

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    1. Oh sorry to hear that. I see that you can also buy a socket for it as well, so maybe that would be good in the future. I will definitely be buying it too. Thanks a lot for verifying !

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    2. Thanks for verifying it, Gavin!
      For what it costs it's a real shame.
      Originally I wanted to draw a layout where the Nutube got soldered directly to the vero and gone underneath (as I did for the Madbean Ping).
      Wasn't sure cause of the possible vibrations problems.
      Would that help to avoid breaking it?

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    3. The pins on the Nutube aren't the normal spacing and i tried to mount it on vero. I was probably being to heavy handed and thats how i broke it so be careful if you buy one. Lesson learned! I noticed vibration wasn't to much of an issue. However, if you give it a knock you do get a mild jangly sound in the background.

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  8. Question

    Anyone think this maybe a potential DIY tube amp when paired with a solid state power amp like a TDA2030? For those that have built it does it have good headroom?

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    1. Unfortunately, i didn't manage to play long enough to determine headroom before i killed it, sorry.

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  9. Thanks for verifying this circuit, Gavin, and sorry about your NuTube.

    The overdrive design is pretty basic, so a lot more could be done with it (e.g. adding a Baxandall tone control). If I invest in one of these devices, I think I'll experiment with some circuits on the breadboard first to examine the possibilities.

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  10. By the way, for more NuTube circuit schematics, check out the bottom of the following link from Korg:

    http://korgnutube.com/jp/contest/

    There's a two NuTube high gain pre-amp sim that looks very cool!

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