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Open D string louder when amplified.

Discussion in 'Amps, Mics & Pickups [DB]' started by ReiPsaeg, Dec 23, 2012.

  1. ReiPsaeg


    Dec 1, 2012
    Rochester, NY
    When I amplify my double bass my open D string is much louder than any other note. This doesn't happen when I'm mic'ed or playing acoustically. So far I've tried equalization by cutting the lows, and muting the instrument by placing a rolled up towel between the top and the tail piece. Both of these have only helped marginally. Does anyone have any other advice or know what else might be the cause of this?

    I realize that I might not get this perfectly evened out, but where it is it absolutely kills my control over the dynamics of the instrument.

    Oh and I'm using a Shen SB80 bass (low end, I know, but it's what I could afford when I was in school), a Fishman full circle pickup with bridge adjusters, and playing through either an Ampeg B2-R with a 1x15 Cab, or various Behringer combos in rehearsal spaces.
  2. notabene


    Sep 20, 2010
    SF Bay area
    Is the "D" played on the A string any more resonant than surrounding notes? Does rotating the full circle a bit help?

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  4. ReiPsaeg


    Dec 1, 2012
    Rochester, NY
    Oh yeah, I left that out. The D on the A string is fine relative to it's surrounding notes. Also, the other open strings and stopped notes on the D string don't seem to be affected by this.
  5. Ric Vice

    Ric Vice Supporting Member

    Jul 2, 2005
    Olivette, Missouri
    Rei Psaeg,
    My A String was very resonant through the Underwood and Realist Pickups, When I changed to the Ehrlund EAP that more or less disappeared.

  6. gottliver


    Dec 20, 2004
    Try muting the d string between the bridge and tailpiece. The resonance of it on my bass comes thru my pickup.
  7. Mike Arnopol

    Mike Arnopol Supporting Member Commercial User

    Jan 4, 2005
    Owner of MAS Soundworks
    I have the exact same problem.
    I notch it out.
  8. fdeck

    fdeck Supporting Member

    Mar 20, 2004
    Madison WI
    HPF Technology: Protecting the Pocket since 2007
    I found that a wolf eliminator, while helping my acoustic tone, created a really horrible resonance through the amp. Along similar lines, I'd eliminate the afterlength-mounted pickup jack if you've got one.
  9. ReiPsaeg


    Dec 1, 2012
    Rochester, NY
    What does that mean to "notch it out"?

    That might be worth a try, the input is mounted on the afterlenghths of the D and A string. But what would I do with the jack, just leave it dangling there?
  10. fdeck

    fdeck Supporting Member

    Mar 20, 2004
    Madison WI
    HPF Technology: Protecting the Pocket since 2007
    My approach is to remove the plate that is used for hanging the jack to the afterlengths, wrap the jack in a couple layers of bike innertube rubber (in plentiful supply at my house) and secure it to the tailpiece with one of those velcro thingies for tying up cables.
  11. what the pluck

    what the pluck

    Oct 13, 2010
    This means to identify the offending frequency then to pull it out using eq. Some equalisers will give you more control over how to do this. A notch filter usually allows you to adjust the "q" or width of the band you want to change.

  12. For this reason, 'notching' won't work. It's a mechanical problem with the pickup/mounting.
  13. ReiPsaeg


    Dec 1, 2012
    Rochester, NY
    Oh yeah, "notching" with equalization. It's definitely a mechanical issue, but I had found that eq helped a little. I'm going to have a rehearsal where I need to amplify soon so I'll get to try these suggestions out then.
  14. ReiPsaeg


    Dec 1, 2012
    Rochester, NY
    Anyways, thanks for all of your help. After my gig tonight I seem to have solved my problem for now. I removed my pickup from the after lengths of my strings and attached it to the tail piece instead and now my open D sounds a lot better.