Quote:
Originally Posted by JackB1
What exactly is back buzz? Is it caused by a high fret between the note I'm fretting and the nut? Wouldn't I be able to hear the buzz coming directly from the fret?
Should I check the area with a fret rocker?
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Short answer: it is the portion of one or more strings between the nut and a fretted note that vibrates. It generally is not related to a high fret: it is usually sympathetic vibration, hence why it vibrates at certain pitches and not others. To fix it, one needs to change the geometry of the string relative to the playing surface of the frets. As I wrote previously, raise the nut a hair and/or change the curvature of the neck slightly.
Do a forum and/or internet search, you'll find lots of information about it. Some of it even good.