Pianotech

  • 1.  Wound bass strings Question #2 : High partials

    Registered Piano Technician
    Posted 10-22-2018 22:42
    Steinway   M   from 2003. Really decent condition. Same piano as in question #1.
    Customer is complaining that some of the strings sound too bright and subsequently harsh when played a little on the loud side. What I am hearing is notes that are not necessarily too bright but which exhibit a couple of prominent high frequency partials that ​stick out when played on the loud side. Not partials we would normally want to hear out front. Not sympathetic string vibration from a note higher up. The annoying partial dies away quite quickly after a second or two. Hoping someone here will have some suggestions on what to try.

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    Geoff Sykes, RPT
    Los Angeles CA
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  • 2.  RE: Wound bass strings Question #2 : High partials

    Posted 10-22-2018 22:58
    Bad winding or an agraffe problem has caused this problem for me in the past.
    -chris





  • 3.  RE: Wound bass strings Question #2 : High partials

    Registered Piano Technician
    Posted 10-23-2018 07:53
    Mr.Sykes,

    could be that it's an L mode problem. Check out  James Arledge's website www.pianostrings.com  for a video about the problem and possible solution. Click on the Library tab and look at the bottom of the flow chart for longitudinal.

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    Karl Roeder
    Pompano Beach FL
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  • 4.  RE: Wound bass strings Question #2 : High partials

    Registered Piano Technician
    Posted 10-23-2018 11:38
    Karl --

    Thank you for this. Fascinating. And I believe that is exactly what I'm hearing. Looking forward to checking this out on customers piano.

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    Geoff Sykes, RPT
    Los Angeles CA
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  • 5.  RE: Wound bass strings Question #2 : High partials

    Posted 10-23-2018 11:35
    Try deep (10mm) shoulder needling. 

    Alan McCoy
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    Alan McCoy
    (509) 999-9512