Percussive Tadashi

[Jon Page]

This reminds me of the centripital resonators in some Mason &
Hamlins but I might first look for a coil spring somewhere. Either on the
trapwork or damper tray return. Are the dampers functioning properly?

Jon Page
Harwich Port, Cape Cod, Mass. (jpage@capecod.net)
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At 07:51 PM 4/2/97 -0700, you wrote:
>List:
>
>Today I tuned a Tadashi grand, probably less than 10 years old, with no
>visible faults.  During the tuning, I noticed something I haven't
>experience before, and I hope maybe someone out there can help me with it.
>
>This piano makes a sound like a drum when the keys are played.   It's not a
>dull thump or a crack like might come from a warped keyframe knocking on
>the bed.  This is more of a "poom" sound, with a definite pitch (about that
>of a tom-tom in a trap set), and about a half-second sustain.  No hint of a
>rattle, just a poom.
>
>I investigated further.  I thumped the bottom of the keybed with a closed
>fist.  Poom.  I went around the rim, pounding with closed fist.  Poom.
>Poom.  Things seemed to quiet down as I moved toward the back of the rim,
>near the bass bridge, then liven up again as I continued around the rim...
>
>This was my first time on the piano, and the customer wasn't home.  But
>this intriges me, because in 15 years of tuning I've never heard anything
>like it.  And in case I get asked to track it down, I need some ideas about
>where to start looking.
>
>Any suggestions?
>
>John Granholm
>Granholm Bros Piano Rejuvenations
>Roseburg, OR
>gbros@term.wanwb.net
>
>
>
>

Jon Page
Harwich Port, Cape Cod, Mass. (jpage@capecod.net)
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