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krentz modulator, wolf terminator

Discussion in 'Setup & Repair [DB]' started by basic74, Mar 17, 2016.

  1. basic74


    Dec 28, 2012
    I´ve read abot the wolf terminator and it seems to work. what about the krentz modulator, has anyone tried it? I am curious if this works in a way that the wolf is really gone and not shifted to another note like the weights you put on the afterlength did for me.
    the krentz with the magnet and the black circle vs. the whole machinery on the terminator seems more easy to use and visually less obtrusive.

    my bass has a bad wolf on Ab - A string bad bad warbling, A harmonic as well and doesnt respond well, on the D string the same area is not responding well with the bow and has a mumbling sound, pizz less sustain, low Ab on E string not responding well, much louder than other notes.. you get the idea.
    maybe I need a post adjustment?

  2. Chris Fitzgerald

    Chris Fitzgerald Student of Life Staff Member Administrator

    Oct 19, 2000
    Louisville, KY
    Kristian and Michal Herman like this.
  3. basic74


    Dec 28, 2012
    thanks chris, good idea!
  4. JoeyNaeger

    JoeyNaeger Guest Commercial User

    Jun 24, 2005
    Houston, TX
    Bass Specialist, Lisle Violin Shop
    There are a number of ways to tackle a wolf tone, including the two options you've listed. The first thing I try, after the checking the setup of an instrument, is one of those brass weights you put on the afterlength. When tuned and adjusted, they can make a lot of basses work better. If that doesn't work out, then you might consider one of the devices you've mentioned. I have both and have had far better success with the Wolf Terminator. It really does work. With the Krentz, I feel like I'm reducing the bass's output before it starts to help with the wolf. It's possible I haven't found the sweet spot with it.
    gnypp45 and keiranohara like this.
  5. basic74


    Dec 28, 2012
    ok thanks for the info! I will have a qualified person look at the soundpost first and see where I go from there.
  6. mingusman37


    Mar 7, 2017
    Sorry to reopen an old thread, but have people had success with Krentz modifiers? I have a semi-playable wolf on my octave G that hurts soloing, but a metallic wolf eliminator kills the resonance and sound I love from my bass
  7. Eric Hochberg

    Eric Hochberg

    Jul 7, 2004
    The Wolf Terminator works for me.
  8. RSBBass


    Jun 11, 2011
    I like the idea of playing around with the string afterlength or using small fishing weights. I had an Ab wolf that went away when I added a bow quiver.
  9. Sorry for the dual post, I originally replied to a discussion in my search results which I later realised is in the 'orchestral technique' forum....
    Both open and/or fingered A natural notes are taking off like crazy on my bass when amplified. This is my first experience of a wolf note, after fitting fresh strings to my 'new' bass. I got a brass lupX, it seems to mute across the board. From my reading, I would prefer the tunable Wolf Terminator over a Krentz unless someone can confirm that the Krentz predominantly affects only the wolf frequency. Unfortunately, WT will not ship to Australia...
  10. gnypp45


    Apr 21, 2014
    Stockholm, Sweden
    It seems odd that WT wouldn't ship to Australia. Were you told this specifically by the seller (Hideo Kamamoto)?
  11. the computer 'said no' at the WT site cart checkout (once I put my address in). I have left a message, in the hope it is just a matter of adding postage to the price... now July 4 is over, I hope to hear back from them.
  12. Mr Kamimoto has emailed me, and is happy to post to Aus. He was surprised that the form prevented me from submitting an order and said he will look into it.
  13. I have now received the Wolf Terminator from an Australian luthier recommended by Mr Kamimoto. It was pretty easy to zero in on the guilty note, and the bass is playing far more evenly. I can probably still move the position a little further to get the best balance of dampening and resonance, but I will try out in a live situation first. I am impressed so far!
  14. s van order

    s van order

    Oct 4, 2012
    I use one on my cello to tame a howler Eb and it works. My luthier recommended it after thorough setup and checkup. Can feel the cello almost swell when playing the Eb now but with bow control and the Krentz it is ok. Other wolf dampers helped but also dampened the resonance of the cello. But with Krentz, I also found by moving it around to find a sweet spot it helped boost the resonance of the cello a bit. Richer C string for one. Move it a bit for seasonal changes. I am happy with it.
  15. I recorded* a few A's in different positions on the fingerboard, with and without the terminator fitted. I got these sonograms zooming in on A played in thumb position on the E string.
    Screen Shot 2018-07-23 at 10.12.38 pm.
    left = without WT fitted, right = with WT fitted.
    The 'split' in the light blue on the left is between ~111Hz (pretty close to A) and ~106Hz (between A and G#)... overall the volume is about 3dB less with the Wt fitted. I think I can probably get the WT adjusted slightly higher?
    * recorded via Ischell mic -> Shure X2U -> Amadeus Pro (Mac audio software)
    s0707, s van order and gnypp45 like this.
  16. I can't even see if it's a boy or a girl
    steve_n_his_urb and s0707 like this.

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