The following came to me from another tech, any answers? message: I have a client (a private elementary school) who recently purchased a Boston upright. They (the music teachers) and I are hearing a harsh vibrating sound in the middle of the piano. Subsequent visits to the piano showroom produced the same sound in most other uprights. The technical staff of the dealer tried changing strings, even changing the size of the wire. They then went to a different dealer and heard the same sound in some of their verticals. Is this common? Does it disappear with age? Has anyone else noticed this? I'd be interested in your feedback. Thank You. Larry J. Nelson Brockton, MA
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