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Bass string annoying attack sound

  • 1.  Bass string annoying attack sound

    Posted 25 days ago
    Yesterday I was at a house where the owner of a Yamaha U3 was complaining about sounds coming from several of the bass notes.  As I listened to them, what I heard was a sort of a "tink" at the beginning of the note attack and then the rest of the sound was normal.  The "tink" sound was very similar to that which you get if you pluck some of the short lengths of (bass) strings that are between the tuning pins and the raised plate flange.  Since some of these short strings pitch and tonality were almost an exact match to the "tink", I tried weaving one of my felt mute strips through them but it didn't help any.  Then I tried a minimal amount of hammer shaping and needling which seemed to help a bit but never did solve the problem completely.  I'm hoping someone knows why this might be happening and what they've done to eradicate the "tink".

    Thanks

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    Neil Vanderschaaf
    Round Rock TX
    512-577-1840
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  • 2.  RE: Bass string annoying attack sound

    Posted 25 days ago
    seating of the strings at the termination point maybe?
    did you try Jon's CBL?
    Peter

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    Petrus Janssen
    Peachtree City GA
    678-416-8055
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  • 3.  RE: Bass string annoying attack sound

    Posted 25 days ago
    Oh right.  I forgot to mention that I also tried seating the strings at the bridge, hitch pins and raised plate flange.  (didn't do anything)

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    Neil Vanderschaaf
    Round Rock TX
    512-577-1840
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  • 4.  RE: Bass string annoying attack sound

    Registered Piano Technician
    Posted 25 days ago
    You started doing the right thing, but stopped short. Keep stabbing that hammer in the high shoulder, on both sides, and eventually the ting will disapear.

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    Willem "Wim" Blees, RPT
    St. Augustine, FL 32095
    Tnrwim@aol.com
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  • 5.  RE: Bass string annoying attack sound

    Posted 25 days ago
    Perhaps the hammer glue joint is loose. That would cause a click on the attack.
    -chris

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    Chernobieff Piano Restorations
    "Where Tone is Key"
    chernobieffpiano.com
    grandpianoman@protonmail.com
    Lenoir City, TN
    865-986-7720
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  • 6.  RE: Bass string annoying attack sound

    Registered Piano Technician
    Posted 25 days ago
    My guess would be a loose hammer glue joint, followed by hammer flange screws need tightening.

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    Geoff Sykes, RPT
    Los Angeles CA
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  • 7.  RE: Bass string annoying attack sound

    Posted 25 days ago
    I'm not a seasoned technician, but I might have an idea. I'm restoring an upright Baldwin with a sostenuto rod. The original wire that rotates down and holds the dampers was covered in some sort of silk or fabric that kept it quiet when dampers would hit against it when not in use. I had to replace the wire with plain piano wire, which is not insulated in any fabric or silk. As I'm working on regulating I'm noticing a "tink" sound as I play the bass notes. I know from the work I've been doing I know that it's the little metal post hitting the wire of the sostenuto rod. I need to adjust the posts so this doesn't happen. Maybe that is something you can check.

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    Tricia Turner
    Lehi UT
    801-368-3637
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  • 8.  RE: Bass string annoying attack sound

    Registered Piano Technician
    Posted 23 days ago
    Sometimes the mute rail screws, if not tight will vibrate. Possibly just tight enough that only the attack sets it to vibrate once as a “tink?”

    Joe Wiencek




  • 9.  RE: Bass string annoying attack sound

    Registered Piano Technician
    Posted 23 days ago
    I assume you isolated the noise by touching the offending strings to see if the noise stopped when you play the key.  On Yamahas, I have heard a mysterious tink and found it to be the hammer return springs up out of position because the hammer butt spring strings are failing from age. 

    Lisa Weller, RPT





  • 10.  RE: Bass string annoying attack sound

    Registered Piano Technician
    Posted 24 days ago
    Neil,
    You didn't write anything about checking glue joints.  Sometimes the hammer seems solid, but it's not.  Also the back check catcher at the dowel, or the dowel at the hammer butt.
    Stewart

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    Stewart Freedman, RPT
    Freedman Piano Service
    Akron, OH
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  • 11.  RE: Bass string annoying attack sound

    Registered Piano Technician
    Posted 24 days ago
    Neil,
    You didn't mention if these notes were bi-chords. If so, check to see if the hammer is mated properly to the bi-chord.
    Roger

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    Roger Gable
    Gable Piano
    Everett WA
    425-252-5000
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  • 12.  RE: Bass string annoying attack sound

    Member
    Posted 24 days ago
    Backscaled muted?

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    Regards,

    Jon Page
    mailto:jonpage@comcast.net
    http://www.pianocapecod.com
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  • 13.  RE: Bass string annoying attack sound

    Posted 24 days ago
    No, they were singles ... C1 and D#1 were particularly bad.
    Should have mentioned that detail.

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    Neil Vanderschaaf
    Round Rock TX
    512-577-1840
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  • 14.  RE: Bass string annoying attack sound

    Member
    Posted 24 days ago
    Loose winding?

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    Regards,

    Jon Page
    mailto:jonpage@comcast.net
    http://www.pianocapecod.com
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  • 15.  RE: Bass string annoying attack sound

    Member
    Posted 23 days ago
    can you post a short video with audio ? also helpful to list the notes that are making the noise. Are there any new or newer stings in the piano? some pieces of cut off piano wire or even a broken piano wire could be down behind the bottom board or even a paper clip[. Try tightening the screws on the  damper heads and also weave some cloth between the hitch pins and string on the back scale. Hunting down sounds is a big challenge. There could be a loose screw on the fallboard hinge .

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    James Kelly
    Owner- Fur Elise Piano Service
    Pawleys Island SC
    843-325-4357
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  • 16.  RE: Bass string annoying attack sound

    Posted 23 days ago
    I want to thank everyone that posted hints here.  You've given me some good things to try out when I re-visit this piano!

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    Neil Vanderschaaf
    Round Rock TX
    512-577-1840
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