Does the sound stop instantly when you damp the string? If so, it is probably in the string system. If it rings on, look elsewhere.
Strum across the strings with dampers down to listen for a slightly leaking sympathetic string. Could be a partial of A0.
Tap the plate struts, listening for the bell. Fix by adding weight to the ringing strut.
To test for horizontal mode, lower the pitch of the string. If the pitch of the bell sound does not change, it is a horizontal mode vibration, and can only be fixed by replacing the string.
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Ed Sutton
ed440@me.com704-536-7926
Original Message:
Sent: 12-19-2015 22:39
From: James Kelly
Subject: metallic or bell sound-Yamaha C3
I was tuning a Yamaha C3 Grand in a local church on Friday and kept picking up a very annoying metallic/bell sound in
the bass at E2. The piano is in excellent condition and very stable and the hvac is very consistent and comfortable. RH was in the 40's which is very good in a church here. I am looking for suggestions to quiet or eliminate this sound . I have read various suggestions made in other posts both here and on the piano world technician forum but did not see replies that any of the suggestions worked. My first thoughts are to check the string level and termination , bridge pin tightness, hammer to string contact and stringing cloth on the waste end. Another thought is to first swap the hammer from a neighbor to see if it is in the hammer.
I am returning to the scene on Monday and would at least like to try to reduce the sound but would ideally want to eliminate it. Any help or ideas would be great.
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James Kelly
Pawleys Island SC
843-325-4357
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