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Setup & Repair [DB] Exploring the issues involved in setting up and repairing basses, along with luthier recommendations.


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  #1  
Old 02-05-2011, 09:35 PM
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Action too high, and bridge is adjusted to its lowest point

Hey guys. I know there are a ton of threads on action and bridge placement but i couldnt find one that answered exactly my question but... I played on someone elses bass this weekend and i noticed how low their action was, but the bridge wasnt even adjusted close to its lowest point. And i went home and lowered my bridge to the lowest point, but still the action was way too high. Ive heard that on average their should be just about enough room up near the nut for a business card to slide through, but mind is way high then that. So pretty much what i was wondering is... is my bridge not fitted to my particular bass? and should i bring it to a luthier to have the bridge cut down a bit? im really not sure, ive only been playing upright about 3 years, and im not too familiar with setup, and things of that nature. Any advice would be helpful. Thanks
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  #2  
Old 02-05-2011, 10:21 PM
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String height at the nut and string height at the end of the fingerboard are almost independent, each needs to be addressed separately.

If the string height is too high at the nut, it's addressed by filing the string grooves in the nut deeper. As you mentioned, the thickness of a business card is a common standard.

If the string height is too high at the end of the fingerboard, it's addressed by some combination of: (1) lowering an adjustable bridge, (2) Filing the string grooves in the bridge a little deeper, or (3) reworking the bridge; either by taking some material out of the feet if they are too thick, recutting the top arc, or even fitting a new bridge if the existing one is not a good match for the bass.

There's not a commonly agreed upon standard for string height at the end of the fingerboard, because it depends a lot on what kind of music you play, what kind of strings you use, whether you play mostly arco or pizz, etc. But a ballpark middle of the road figure would be something like 9, 8, 7 and 6 millimeters for the E, A, D and G strings respectively.

Last edited by tstone : 02-05-2011 at 10:24 PM.
  #3  
Old 02-05-2011, 10:27 PM
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You need to adjust your truss rod.

Try pressing the E string down a the first and last fret at the same time. If the gap between the string and the 12th fret is MORE than the thickness of say a pick or credit card, then your truss rod is certainly the issue.

Fixing this is a long process for a beginner, but I recommend you learn how to do it. In order to make this go more smoothly, it would help to know what kind of bass you have in order to tell you where the truss rod slot is... or a pic of the bass. Whichever is easiest for you.
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  #4  
Old 02-05-2011, 10:52 PM
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Somebody took a wrong turn.
  #5  
Old 02-05-2011, 10:55 PM
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How is the neck angle?
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  #6  
Old 02-05-2011, 10:58 PM
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Originally Posted by salcott View Post
Somebody took a wrong turn.
ROFL touche' I was for sure I was in the BG forums... haha sorry guys, my mistake
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  #7  
Old 02-05-2011, 11:19 PM
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Originally Posted by VinKreepo View Post
You need to adjust your truss rod.

Try pressing the E string down a the first and last fret at the same time. If the gap between the string and the 12th fret is MORE than the thickness of say a pick or credit card, then your truss rod is certainly the issue.

Fixing this is a long process for a beginner, but I recommend you learn how to do it. In order to make this go more smoothly, it would help to know what kind of bass you have in order to tell you where the truss rod slot is... or a pic of the bass. Whichever is easiest for you.
truss rod

definately a wrong turn.
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  #8  
Old 02-05-2011, 11:33 PM
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shim the neck
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  #9  
Old 02-06-2011, 06:57 AM
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Originally Posted by bassmasta94 View Post
and should i bring it to a luthier ?
yes
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  #10  
Old 02-06-2011, 07:00 AM
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Where in CT are you? I would reccomend Upton for a great Setup.
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  #11  
Old 02-06-2011, 07:50 AM
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Quote:
Originally Posted by tstone View Post
String height at the nut and string height at the end of the fingerboard are almost independent, each needs to be addressed separately.

If the string height is too high at the nut, it's addressed by filing the string grooves in the nut deeper. As you mentioned, the thickness of a business card is a common standard.

If the string height is too high at the end of the fingerboard, it's addressed by some combination of: (1) lowering an adjustable bridge, (2) Filing the string grooves in the bridge a little deeper, or (3) reworking the bridge; either by taking some material out of the feet if they are too thick, recutting the top arc, or even fitting a new bridge if the existing one is not a good match for the bass.

There's not a commonly agreed upon standard for string height at the end of the fingerboard, because it depends a lot on what kind of music you play, what kind of strings you use, whether you play mostly arco or pizz, etc. But a ballpark middle of the road figure would be something like 9, 8, 7 and 6 millimeters for the E, A, D and G strings respectively.
+1

It should be a pretty quick fix to address string height, but you'll likely need a fingerboard dressing afterward.
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  #12  
Old 02-06-2011, 11:30 AM
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Quote:
Originally Posted by bigolbassguy View Post
+1

It should be a pretty quick fix to address string height, but you'll likely need a fingerboard dressing afterward.
Why is that Mark?
  #13  
Old 02-06-2011, 12:42 PM
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Yeah, thanks guys. I would most likely go to Upton, but would i just go there with my bass and tell them problem and they'll see what they can do? Or does it work someother way? Im unfamiliar with this type of stuff. Any help on what i would exactly say to the luthier would be great
  #14  
Old 02-06-2011, 12:48 PM
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Just tell them what you've told us -- that you feel the string height is high compared to other basses you've played. Ask them if they agree and what your options are for improving the situation, and how much it would cost.
  #15  
Old 02-06-2011, 12:53 PM
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Originally Posted by Socalef9 View Post
shim the neck
this
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  #16  
Old 02-06-2011, 12:53 PM
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Thumbs up What's going on @ TBDB today?

Quote:
Originally Posted by VinKreepo View Post
ROFL touche' I was for sure I was in the BG forums... haha sorry guys, my mistake
A good thread up under the Basses Forum by a Noob and now this.....A slabber who made a wrong turn, admits it, laughs about it and doesn't get all rankled, and actually apologizes for it. Will wonders ever cease?
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  #17  
Old 02-06-2011, 01:03 PM
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Originally Posted by Socalef9 View Post
shim the neck
This is major surgery and probably not necessary in this case. This is usually done when the neck angle/bridge is too low, as on many old basses, and there isn't a budget for a neck reset, which is the better way to do this.
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  #18  
Old 02-06-2011, 01:20 PM
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That comment was from another slab player who took a wrong turn.
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  #19  
Old 02-06-2011, 01:20 PM
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Quote:
Originally Posted by Eric Hochberg View Post
This is major surgery and probably not necessary in this case. This is usually done when the neck angle/bridge is too low, as on many old basses, and there isn't a budget for a neck reset, which is the better way to do this.
I think the poster is referring to shimming a bolt-on Fender style neck, a common technique with those electric bass guitars...
  #20  
Old 02-06-2011, 01:27 PM
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Quote:
Originally Posted by Jake deVilliers View Post
I think the poster is referring to shimming a bolt-on Fender style neck, a common technique with those electric bass guitars...
yes this would be what he is referring to
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