>Now, my question is: why does Boesendorfer get decent >results with a soft rim. Or, are the results that >great? > >Vladan They get quite good results from pp to mf, but at the higher output levels their designs don't seem to cope very well. >My understanding is that the soft rim is compensated for by a more >massive soundboard (thickness). > >David Love >davidlovepianos@comcast.net Possibly, the ribs on the bigger pianos are also quite heavy relative to their strength. The Imperial ribs are nominally 30mm wide by 23 mm high. One would expect their light spruce rims to limit sustain, and they probably do. But as David said, the heavier sound board of the Bös would seem to be one factor which is contributing to sustaining qualities. The Bös plate is also considerably heavier than the lightweight offerings from Yamaha and Steinway for example. I remain highly suspicious of the tonal negatives, which I believe light plates bring to the mix. Steinway D plates are only around 8 mm thick behind the hitch plates. The 225 plate we are using for our piano is around 11mm out behind the hitch plate. I can't remember the thickness of Imperial plate but I do remember that is towards the heavier end. Look at the SD-10! Another heavy plated and heavily rimmed piano which has quite outstanding tonal characteristics once the duplex noise and other stringing and strike ratio issues are sorted. Ron O. -- OVERS PIANOS - SYDNEY Grand Piano Manufacturers _______________________ Web http://overspianos.com.au mailto:ron@overspianos.com.au _______________________
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