The massive and hardwood inner rim does contribute to the tone, not because it resonates like a soundboard, quite the contrary, its weight and rigidity probably influence the type and thickness of the soundboard panel that must be used. Compare the panel thickness on a Steinway versus a Boesendorfer and ask whether or not the size and material of the inner rim doesn't contribute to that design decision. David Love davidlovepianos@comcast.net -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of Terry Sent: Saturday, January 22, 2005 4:47 AM To: Pianotech Subject: Re: circle of sound I don't know Ric, I'm not sure exactly how applicable it is, but the preferred material for high-fidelity speaker box or mounting platform is MDF. Also, while it seems a good idea that every part of the piano should play its role, I'm not sure that all parts need to be little soundboards. MDF might not hold a screw well, might fall apart rather quickly in the water, but as far as just being an immobile hunk of very dense stuff that doesn't vibrate very well - which, I think, is the basic function of an inner rim - it think it fits that bill even better than many hardwoods. It's also dimensionally quite stable (I think). Hmmmmm, an MDF pre-formed inner rim? I'm really not suggesting that, but I find it difficult to imagine how it would be a detriment to the musical properties of a piano when used as a case material. Terry Farrell Richard wrote: > Grin.... true enough Terry.... but then that said. Steinway does beleive > in the idea that every part of the piano should in someway or another > contribute to the projection and quality of the sound. Solid hardwoods > cases/rims... vs papboard...? hmmm _______________________________________________ pianotech list info: https://www.moypiano.com/resources/#archives
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