----- Original Message ----- From: "Newton Hunt" <nhunt@optonline.net> To: <caut@ptg.org> Sent: February 09, 2002 2:25 PM Subject: Re: a little knowledge... > > So List what's this about foam in the keybeds of Yamahas? > > I think the foam is in the brain. > > Newton Actually some Yamaha verticals were (are?) built with what I would call a 'torsion box' keybed. Several crosswise boards, end pieces and a hollow core. I assume the foam was added to keep them from sounding hollow. Much has been made of this construction by some competitive dealers, but I don't really see any problem with it. Saves a bit of weight (to make up for the use of MDF elsewhere) and they are certainly strong enough and stable enough. Del
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