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Martin Acoustic Bass pickup issues

Discussion in 'Pickups & Electronics [BG]' started by quarternote, Mar 6, 2016.


  1. quarternote

    quarternote

    Jan 31, 2009
    Wisconsin
    Martin BCPA4 acoustic bass with a Fishman Analog pickup and preamp. A made in USA bass. Strange as the F# is very weak, little sustain, and it is weak on both the A string and the D string. Additionally, all the sound is very trebly, and even turning down the Tone control to zero leaves too much treble, and the weak F#. The E and G are OK. I hate to say it but I have a Breedlove acoustic bass that sounds much better. And the Martin has new D'Addario tape wound strings, just like the Breedlove. I don't know if it is a pickup issue, or what. New battery too. Any help would be appreciated
     
  2. I'd recommend taking it to a reputable acoustic guitar luthier and have him/her fettle the bridge. This is a critical thing for this type of instrument. The slot needs to be perfectly flat and cleanly machined. The tiniest splinter of rosewood can cause this sort of problem. The saddle needs to be a perfectly flat on the bottom as well. Plus it needs to be snug in the slot but not binding.

    If this is all ok you should try it unplugged. If the f sharp is still relatively weak, I'd double check the bracing, the bridge plate etc inside with an inspection light and mirror. If this all checks out, start trying a few different brands and gauges of strings.
     
  3. quarternote

    quarternote

    Jan 31, 2009
    Wisconsin
    Robbie,
    Thanks so much for your insight, I appreciate it greatly. I will let the forum know what develops Thanks again.
     
  4. bmoriarty

    bmoriarty

    Dec 10, 2008
    How did it all turn out?
     

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