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Neck/truss rod adjustment
This particular adjustment has been known to ruin guitars when performed incorrectly, so here referral to a professional repair person is highly recommended. A guitar will need a truss rod adjustment if the neck is not straight. One way to check the straightness of the neck is to play 12th and 19th harmonics on the low and high strings. After sounding each harmonic, fret the note there and play it again: it should be exactly the same pitch. If it is not, the neck may be in need of adjustment. However, this may be indicative of an intonation problem as well, which can be fixed without the aid of a repair person; see below. If adjusting the intonation does nothing for you, give the guitar to a repair person. |
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Adjusting intonation
You may notice each string on the bridge sits in a "saddle". Depending on your setup, you might notice
the saddles may be in different positions: some might be pushed forward and others might be pushed
back, sometimes slightly. The positioning of the saddle effectively changes the length of the vibrating string.
Tune the guitar to concert pitch with the aid of an electronic tuner, making sure the open strings are perfectly
in tune. Play the 9th and 12th fret harmonics, then play the fretted notes. If the fretted notes are sharp, the
string is too short and the saddle needs to be pushed back toward the base of the bridge. If the note is flat,
the string is too long and the saddle needs to be pushed up toward the nut. Repeat this procedure for each
string. Adjusting the intonation should be done every few months or at least twice a year. |
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<< ADJUSTING THE GUITAR PART 1 |
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