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Heavier the string is, vibrations of that string get lower. The mass affects the vibrations of the string.
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Replacing a plain G string with a wound G string means getting a slightly heavier G string. This combination that G string has (it is the thickest of the lowest – to put it that way) is making the G string unstable. Plain strings (high E, B and G) have lower gauge than wound strings (low E, A and D). Why would wound G string help in this case? Well, plain G string is the thickest plain string on a guitar. If you have a plain G string, you can give a wound G string a shot. Acoustic guitar string packs often have G string wounded. Usually, wound strings are thicker and lower in pitch. What’s the difference? Wound strings have a core string wrapped with metal string around it. If your G string is not wound (if it’s plain), change it with wound G string. 12 Final Thoughts About The G String Problem 1.
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