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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 06-19-2007, 06:07 AM
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Join Date: Jan 2004
Table buzz

Need some help here, I lowered the action on my Bryant bass earlier and ever since, a buzz has occurred in the top left side (a&e string side) when digging in on the A and E strings. There are no cracks in the surface so Im wondering what the problem could be? Could it be a humidity thing? The weather has suddenly turned very warm here as the problem was not apparent before the change.
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  #2  
Old 06-19-2007, 09:12 AM
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Join Date: Aug 2004
Location: Atlanta, GA USA
Quote:
Originally Posted by Ashley Long View Post
Need some help here, I lowered the action on my Bryant bass earlier and ever since, a buzz has occurred in the top left side (a&e string side) when digging in on the A and E strings. There are no cracks in the surface so Im wondering what the problem could be? Could it be a humidity thing? The weather has suddenly turned very warm here as the problem was not apparent before the change.
If it persists it could be a loose bass bar. Let's hope not. Let's hope it is something else but if you are sure of the location, it sounds like that could be it. Check all of the seams around that area by tapping along the seam with your ear to the bass. It could also be a loose lining. We can always hope.
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  #3  
Old 06-19-2007, 06:08 PM
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Join Date: Feb 2002
Location: Brewster, NY, USA
Quote:
Originally Posted by Ashley Long View Post
Need some help here, I lowered the action on my Bryant bass earlier and ever since, a buzz has occurred in the top left side (a&e string side) when digging in on the A and E strings.
Is it possible that when you lowered the "action" you twisted one of the bridge feet a little? If so, an edge of the foot could be rattling against the top where it is no longer flush. Also check all the seams.
  #4  
Old 06-19-2007, 06:34 PM
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Join Date: Nov 2001
Location: Maui
That's what my bass does when I pop a seam. I usually check it with typing paper.... if it slips thru, the seam's popped.
  #5  
Old 06-19-2007, 08:11 PM
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Join Date: May 2004
Location: Bolinas Ca
Seems like as good a spot to ask as any, do luthiers have an organized way of going thru a bass to acertain where buzzes and or other problems are located? I am always trying to locate a buzz that sounds like its coming from one place when really it is coming from another.
Thanks
  #6  
Old 06-20-2007, 04:45 AM
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Join Date: Jan 2004
Thanks guys, I wondered how long it would take for someone to pick me up on "action" Im taking it to the luthier today so we shall see.....
  #7  
Old 06-20-2007, 07:34 AM
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Join Date: Nov 2001
Location: Chicago
I don't know about buzzes, but when I suspect a popped seam I usually lightly tap along the edge. If theres a seam open, the sound will be markedly different than when everything is closed up. Kind of like trying to find a stud behind a wall by tapping, you can hear the difference.
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  #8  
Old 06-20-2007, 08:35 AM
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Join Date: Apr 2004
can adjusting the action on a bass pop a seam..?
i adjust the bridge adjusters on my bass quite frequently... so is this something i should be avoiding then..?

am confused here
  #9  
Old 07-18-2007, 06:19 PM
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Join Date: Sep 2006
Location: Glasgow, Scotland
Last month I noticed a bit of a buzz coming from my Bryant too. On further investigation, a seam has opened up at the bottom table-rib join near the end pin on the E side. You can't really see it, but if you press it there's a bit of movement and the buzz goes away if you press against it (with your foot!) while playing.

It only really buzzes when playing an open G. Initially I thought it was the bridge (as it sounded like it was coming from that area), so maybe something similar has happened to your Bryant?

Mine's about 9 months old - is that normal behaviour for new basses?

Douglas.
  #10  
Old 07-29-2007, 12:48 AM
JDM JDM is offline
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Join Date: Oct 2005
Hi Ash, I hope you get that buzz sorted. We've met a few times- I'm Carl Harrison's replacement (some title), Mat Downer says you have an awesome technique! I'm getting into the DB more lately and hitting a few probs of my own!! Catch you around, Jon
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  #11  
Old 07-29-2007, 06:46 AM
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Join Date: Feb 2002
Location: Brewster, NY, USA
Quote:
Originally Posted by douglas81 View Post
Last month I noticed a bit of a buzz coming from my Bryant too. On further investigation, a seam has opened up at the bottom table-rib join near the end pin on the E side. You can't really see it, but if you press it there's a bit of movement and the buzz goes away if you press against it (with your foot!) while playing.

It only really buzzes when playing an open G. Initially I thought it was the bridge (as it sounded like it was coming from that area), so maybe something similar has happened to your Bryant?

Mine's about 9 months old - is that normal behaviour for new basses?

Douglas.
Think of it as a blessing. Seams pop open when the bass goes through changes in dimension due to fluctuations in temperature and humidity. If a seam does not pop open to relieve the tension, you will generally get a crack somewhere, or at least a bulge. The softwood top and the thin ribs are the weakest link, and that's where most cracks are likely to occur. New basses are only more prone to open seams if the wood has not been acclimated to the user's climate. In other words, if you live in Arizona, and your bass was made in New Orleans, from air-dried wood, you are going to have problems as the wood dries and shrinks. The opposite is somewhat true as well, though swelling is less of a problem than shrinking. Some makers of new basses double the inner lining strips and use strong glues to hold the top and back plates on. Bad idea, as cracking will generally be the result, since the seams won't be able to pop as easily.
  #12  
Old 07-30-2007, 01:17 PM
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Join Date: Apr 2004
Quote:
Originally Posted by arnoldschnitzer View Post
Some makers of new basses double the inner lining strips and use strong glues to hold the top and back plates on. Bad idea, as cracking will generally be the result, since the seams won't be able to pop as easily.
so... (and pardon my confusion here) is it worth getting the 'pops' reglued then..? my bass is about 30years or so, and has always been local to where i live in the UK... does have a 'loose' seam on the upper E side... the weather here is extremely variable.
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