Caster Cups

[Delwin D Fandrich]

Yes, I'm out here. But I'm not that far out there. I prefer dealing with concepts that
have at least some basis in reality. Next we'll be hearing that our Dampp-Chasers have to
plugged in using nothing but oxygen-free Monster Cable.

Regards,

Del

------------------------------------

Gregory Torres wrote:

> Larry,
>
> I don't know about caster cups making the piano sound bigger than it is
> unless, perhaps, it is set up on a wooden floor in the middle of a room which
> could, in theory, transmit some of the sound passing through the
> legs/castercups to the wooden floor, thus amplifying it very slightly. I
> don't see how it could be significant unless it was a wooden floor where
> underneath was no insulation and just open space, kind of like a giant
> soundboard, if you will. Like I said, sounds good in theory but can this be
> tested perhaps? Del, you out there??   : )
>
> As to quieting with foam, yes, a piano can be quieted somewhat with foam
> under the soundboard and above the strings.
>
> Regards,
> Greg Torres
>
> Larry J Messerly wrote:
>
> > Several years ago I was at an Arizona State seminar where The comment was
> > made that  putting a grand piano on caster cups would improve the tone
> > and volume of a piano and make a 5' grand sound like a 6' grand.
> > Especially if the piano were on a concrete floor, even if it were covered
> > with tile, carpet or wood.
> >
> > Later I received information from Yamaha on quieting a piano using foam
> > under the soundboard, and/or on top of the strings.   They gave decibel
> > readings on how much change could be accomplished using a variety of
> > methods.
> >
> > Has anyone seen empirical information on decibel changes with the
> > addition of caster cups in a variety of situations?
> >
> > Larry Messerly RPT
> > Phoenix/Prescott
> >
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