ringing overtones

David Ilvedson ilvey at sbcglobal.net
Thu Oct 18 22:04:03 MDT 2007


Look at the string braiding between bridge and hitchpins in the bass and tenor...something might be missing...



David Ilvedson, RPT

Pacifica, CA 94044









Original message

From: "Noah Haverkamp" 

To: pianotech at ptg.org

Received: 10/18/2007 8:02:08 PM

Subject: ringing overtones





There's a copper-wound tenor bichord (at the break) on a Kawai CL-4WO 44" console serial number 1821717 that rings high unpleasant overtones rather loudly, loud enough so you can hear it over the phone, as soon as the damper damps the strings. When I mute either string it still happens. I moved the damper head up and down, left and right and every which way and checked damper timing - nothing helped. It appeared to fit nice and neat into the gap of the bichord. It was seated firmly against the bridge and bridge pins. The strings are aligned at the v-bar. 



Is it possible I just didn't get the damper to seat just perfectly? After I left I thought of this possibility: maybe the damper felt is too tough. Perhaps replacing it with fresh? or a softer kind? The other notes just above rang just a little as well, but only half as bad. 



Or is it just the piano? Can nothing be done?



-Noah Haverkamp Frere
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