Under Grand piano resonator

[Isaac OLEG]

Dear colleagues,

I am looking for some information about the grand piano accessories
that are designed to be installed under the piano for too dry acoustic
concert halls. To help the sound projection from below the piano.

I looked in the archives and goggle, but I don't know how this thing
is called.

I am looking for a sketch, or a place where these are sold. I remember
that S&S in NY worked with the conceptor of the thing awhile, and I
heard of it's use on outside places in France, but did not see one
yet.

Any info welcome.

Thank you all.

Isaac OLEG

PianoTech
19 rue Jules Ferry
94400 VITRY sur SEINE
FRANCE
tel : 033 01 47 18 06 98
fax : 033 01 47 18 06 90
cell: 06 60 42 58 77