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Carved Bass Top Sag?

Discussion in 'Setup & Repair [DB]' started by mikeowen17, Jun 17, 2018.

  1. mikeowen17

    mikeowen17 Supporting Member

    Jan 28, 2011
    I just purchased a 20 yr old Czech carved bass. As I’ve played it more I noticed that the inner (closest to strings) edges of the F holes sits lower than the outer. This got me wondering if the top was sagging a little (my relative inexperience buying uprights is showing here). The bass was in gage’s shop a month ago having a crack repaired (by prev owner) so I called them but they didn’t recall any sagging issues with the bass - mentioning that it may be the way the top on this particular instrument sits. They did offer to take a look if I bring it in, which I may do, but thought I’d post it here for opinions also.

    I want to change the current strings (Zyex) for Spiros, but I’m reluctant to add higher tension til I’m certain it’s stable.

    The bass came with an 4 year old appraisal from Gage which mentioned a sprung bass bar - could that be at play here?

    9DB6F042-8CCB-4DC3-824A-FBA2301EEFCB. 9C60AE4F-252B-4CBF-9293-B2313522FACF. 3BB90122-CE22-46D0-BE0F-159DDA974605. 0944D1BB-BFAB-4377-BE59-38DD829C28A7. 1E7DC367-AF66-49E2-9687-4804F13AAE12.
  2. salcott

    salcott Supporting Member

    Aug 22, 2007
    NYC, Inwood.
    "Sprung" refers to a technique used by some luthiers when installing a bass bar. There is some disagreement as to whether it's a good idea.

    Let the guys at Gage's have a look.
  3. Eric Hochberg

    Eric Hochberg

    Jul 7, 2004
  4. Steve Swan

    Steve Swan

    Oct 12, 2004
    Burlingame, California
    Retailer: Shen, Sun, older European
    I would not worry much. This looks like it is well within the range of normal movement. Getting it checked out by a professional luthier with a lot of experience will be a confidence builder. Let us know how it works out!
    robobass, Povl Carstensen and salcott like this.

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