Disklavier

I have used this system on everything but the Mark IV.
I would definitely make the piece for the top inside
the lid.  As for the underside, you should still be
able to install at least one layer between the
soundboard and the various devices.

I would also suggest that you have your Disklavier tech
check each note and make sure the ppp value is set as
low as possible.

Carol

----- Original Message ----- 
From: "peterdisklavier" <peterdisklavier@...>
To: <disklavier@yahoogroups.com>
Sent: Monday, December 12, 2005 10:05 PM
Subject: [disklavier] Re: sound absorbing baffles


> Carol -
>
> Have you had an opportunity to install this kind of a
baffle system
> on a Mark IV?
>
> Crawling under mine, it doesn't look like it would be
all that
> simple - the underside of the piano is really broken
up with all the
> electronics, speakers etc.  There must be at least 20
seperate
> locations where the foam would have to be cut and fit
into place.
>
> Pete
>
> --- In disklavier@yahoogroups.com, "Carol Beigel"
<thecarolb@c...>
> wrote:
> >
> > After several years of making baffles for
Disklavier
> > grand pianos, I would like to describe the system
that
> > I think works best.  It is very simple, and can be
> > inexpensive.  Because sound emanates from both the
top
> > and bottom of the soundboard, it is not enough to
just
> > put foam baffles underneath the piano.  The trick
is to
> > use one layer under the lid on top of the strings,
and
> > TWO layers of foam underneath the soundboard.  The
> > sound will not be muffled and you should be able to
> > carry on a conversation sitting next to the piano.
> > However, if you want to listen to the piano play
with a
> > greater dynamic range, simply remove the top baffle
> > which lies on the top of the strings.  There is
never
> > any need to remove the bottom baffles.
> >
> > Usually, upright pianos do not require baffles
because
> > of the way the "soft" pedal works, but one sheet
would
> > cover the outside back of the soundboard between
the
> > beams. Use two layers.  Never put foam on the
inside of
> > an upright piano!
> >
> > First, use the special pour acoustic foam from
> > Markertek in New York (www.markertek.com).  It is
sold
> > in sheets 52" by 52".  You need two sheets - one
for
> > the top and one for the bottom of the soundboard of
a
> > grand piano.  The thinner sheets work fine.  This
foam
> > is made for its sound absorbing properties even
though
> > it looks like any ordinary "egg crate" foam.
> >
> > For the top "blanket", close the lid on the grand
piano
> > and make a pattern out of brown packaging paper cut
to
> > the size of the lid, but about 1 inch smaller on
the
> > straight side to fit inside the rim.  This blanket
is
> > cut in one piece and lies inside the lid when the
piano
> > is closed.  It can be cut out either nubby side up
or
> > down on the foam sheet since it lays on top of the
> > plate and doesn't contact the strings.  Just make
sure
> > it stops before contacting the dampers. You can
easily
> > remove this piece when you want to play your
unmuffled
> > piano with the lid open.
> >
> > For bottom baffles, make patterns of the various
> > compartments between the beams on the underside of
the
> > piano.  I find it easier to use the stiff brown
> > wrapping paper, hold it up to the piano, and use a
> > piece of chalk to mark a crease where I want to
make a
> > cut.  Place the patterns on the smooth side of the
foam
> > and cut them slightly larger so they will stay in
place
> > just by stuffing them against the soundboard.  Use
a
> > long razor blade knife to cut the foam. You can use
> > smaller scrap pieces for the layer against the
> > soundboard, and your fitted pieces underneath them
to
> > hold them in.  Leave plenty of room around the
> > amplifier which needs air.
> >
> > None of the measurements needs to be exact as no
one
> > ever sees the baffles.  All you really want to do
is
> > capture as much sound as you can coming from the
> > piano - not stop it altogether.
> >
> > I have had 100% success using this method.
> >
> > Carol Beigel
> >
>
>
>
>
>
>
>
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