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Misbehaving G String
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JLNims
Posts: 27
Joined: Mar. 9 2016
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 Misbehaving G String
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A question for the luthiers: I have noticed some tuning issues with my G string. When I strobe tune all strings open they play and sound in tune for ~15 minutes. After that time , I check an open chord, say E major, and the G string is off a bit. Going back to the strobe tuner, the G is slightly sharp while all other strings remain in tune. That's the first part of my question, how can that be?
The second part of my question is if I open strobe the G string, and play the G string at whole notes up the fret board, the pitch grows slightly sharper the way up. At the 12th fret, it is sharp by 2 or 3 cents. But the harmonic at the 12th fret is correct. But only the G string does this. Am I missing some sort of adjustment that was never done during initial setup?
Personally, I have done nothing in the form of setup to this guitar, other than just changing strings; and cleaning the fretboard and frets with a dry clean soft cloth (no chemicals or soaps used). Also while the strings are off during changing (I usually replace each string at a time, leaving the others tensioned, never all at once), I will clean the nut grooves with a wood toothpick IF it looks a bit dirty.
If it weren't for the strobe accuracy, and my ears, I would think voy loco en mi cabeza! Bad G string!!
What say any of you?
-Jeff
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REPORT THIS POST AS INAPPROPRIATE |
Date Jun. 10 2022 7:52:24
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kitarist
Posts: 1715
Joined: Dec. 4 2012
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RE: Misbehaving G String (in reply to JLNims)
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quote:
Konstantin, that logic makes sense. Hopefully, when I get my saddle compensated for the gauge that I prefer to play, that effect will be a bit less.
It would be less if you start using carbon trebles, but with either, the effect is there, you just have to re-tune slightly once you have warmed up yourself and the guitar/strings.
About the other question of yours - I feel like it is too little to worry about it. I mean, 2 cents is like 1/20 of a semitone, or 1/10 of a Pythagorean comma. You can vary this reading by just varying a bit the pressure you fret with - use slightly less pressure (as long as still a clean tone), and you will likely eliminate it.
You must have a really accurate tuner, like a Peterson Stroboclip. One thing to try is to measure again at 12th fret but pluck at different points with your right hand - you will see the strobotuner is so sensitive, it will show you 1-2 cent differences just from combined picking up of slightly different intensities of the partials and from subtle changes in pressure because of you plucking the string at different RH positions on the string. To me that says, don't mess with compensation unless you've tried all these other things and Ricardo's advice.
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Konstantin
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REPORT THIS POST AS INAPPROPRIATE |
Date Jun. 10 2022 17:38:04
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