Work through the causes from simplest to most involved.
Quick checks you can do now:
- String tails at the bridge. A long tail or a loose wrap can vibrate against the tie block or the soundboard. Trim tails short and make sure wraps sit flat.
- Tuning machines. Loose roller screws or end caps on a slotted headstock can rattle. Snug the screws gently.
- Excess string on the roller. Overlapping wraps can buzz against the headstock slot.
- Something else on the guitar. A loose strap button, a pickup cable inside the body, or a rattling case pocket can all sound like string buzz.
If the buzz is fret buzz:
- Note where it happens. Buzz on open strings points to the nut. Buzz in one area of the neck points to a high fret or neck relief. Buzz everywhere points to low action.
- Check your attack. A hard rest stroke or strong strumming makes strings swing wider than a light touch, so action that suits one player can buzz for another.
- Try a firmer-feeling set. Our High sets feel firmer under the fingers than Medium, which suits players who dig in.
- Take the guitar to a luthier for nut, saddle or fret work if the buzz stays.
Freshly installed nylon is still stretching and can sit unevenly for a day or two, so retune often before chasing buzz. Our Classits sets come in Medium (SCM101, SCM101B) and High (SCH102, SCH102B) in Classical Strings. Replacement singles are in Specialty Singles.