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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 11-26-2005, 02:42 AM
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Join Date: Sep 2004
Location: Easley, SC
Scale Length

Question, how can you determine scale lenght on a DB? Do you measure from the nut to the notches on the f holes, from the nut to the trapeeze, or ...? I am trying to set the intonation on my DB, but since I aquired it second hand and it is an off-brand student model, I do not know th specs of the instrument. Question two, is there such a thing as a saddle adjustment for each individual string in the DB world. Not for height adjustment, but for dialing in length once the bridge is set to a common point. Any information will be appreciated.


abj
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  #2  
Old 11-26-2005, 05:24 AM
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Join Date: May 2005
Location: Ellenville, New York
Ken?
abj you're going to have to be more specific with what you mean by scale length, dialing in, and some of the other terms you're using but Ken Smith should have the answers you need.
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  #3  
Old 11-26-2005, 06:24 AM
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Join Date: May 2002
Location: Bordeaux, France
ajb, you need to be aware that the word "intonation" has a different meaning in the BG and DB worlds.

You don't "set" the intonation on a double bass. As a general rule, you just put the bridge right between the notches on the ff holes. Since there are no frets on a double bass, there's no need for extreme precision as far as I know. It's up to the player to play in tune and this is what "intonation" really means to us double bassists.
  #4  
Old 11-26-2005, 07:54 AM
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Owner: Ken Smith Basses, Ltd.
 
Join Date: Mar 2002
Location: Perkasie, PA USA
Cool trapeeze?

Quote:
Originally Posted by arcobigj
Question, how can you determine scale lenght on a DB? Do you measure from the nut to the notches on the f holes, from the nut to the trapeeze, or ...? I am trying to set the intonation on my DB, but since I aquired it second hand and it is an off-brand student model, I do not know th specs of the instrument. Question two, is there such a thing as a saddle adjustment for each individual string in the DB world. Not for height adjustment, but for dialing in length once the bridge is set to a common point. Any information will be appreciated.


abj
We use the term 'string length' and not 'scale length' on a DB. It means the same but only the 'vibrating string length' is measured from the 'nut' to the 'bridge' (trapeeze??). I am not sure what you are referring to by the word 'trapeeze'.

What you need is some general knowledge of the DB, its terms and nomenclature and a good DB Teacher. Read a few 100 posts on TB and you're on your way but the DB is NOT a 'do it yourself' type instrument.

The Bridge is usually set at the notches of the F-holes. Measure from the nut to the bridge and see how long it is. It is usually 41" to 42" but some are 40" and some 43". Basses can also be 37" on real small models and 46" on giant sized Basses. The length determines how wide your fingers have to stretch. Imagine that the BD is a large violin. Forget everything you have learned with the guitar and look at it with a clear open mind. What ever similarities the DB has to the BG will fall in place but don't look there for any answers as you are learning. The DB is a serious instrument in my mind. You can spend more for a Bow than you do for a great hand made guitar. Yes, the Bow. Get one in the $3-500 range to start. It will make a difference later on when you get a $3,-5,000 Bow. You will have less bad habits to break if you start of with a better bow. The bow also helps to train the intonation of the left hand.

Get a DB Teacher from your local Symphony Orchestra. They will teach you correctly. Anything less may be a 'crap shoot'!!

Last edited by KSB - Ken Smith : 11-26-2005 at 06:20 PM. Reason: Correction.. thx.. fixed
  #5  
Old 11-26-2005, 04:49 PM
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Join Date: Jun 2003
Location: Wantagh, Long Island, NY
Ken,
I think you meant to say the bridge is set at the notches at the inner side of the "f" holes.
  #6  
Old 11-26-2005, 06:21 PM
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Owner: Ken Smith Basses, Ltd.
 
Join Date: Mar 2002
Location: Perkasie, PA USA
Unhappy oops..

Quote:
Originally Posted by Hector Wolff
Ken,
I think you meant to say the bridge is set at the notches at the inner side of the "f" holes.
thx.. fixed.. early morning post.. sry
  #7  
Old 11-28-2005, 11:37 AM
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Join Date: Sep 2004
Location: Easley, SC
Thanks for your replies gentlemen. Ken, the information that you supplied is what I was looking for. Do you include the nut or measure where it joins the fingerboard? I guess the word "tailpiece would have been a better option than "trapeeze". I had a brain cramp at that moment and I reverted back to guitar terms. Please forgive me. Thanks again.

abj
  #8  
Old 11-28-2005, 12:46 PM
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Join Date: Sep 2003
Location: Manchester UK
As Ken said, it's the vibrating string length i.e.: the length of string from the bottom of the nut where the string exits the nut''s slots (and joins the fingerboard as you put it) down to the top of the bridge.
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  #9  
Old 11-28-2005, 02:22 PM
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Join Date: Feb 2004
Location: Upstate, SC
abg-

I am a teacher in Pickens county. I would be happy to look at the bass for you. If you are interested shoot me a pm.

Brian
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