Del writes (and confuses me): >The continuous bent rim has certain manufacturing advantages but it has >no acoustical advantages that I am aware of. <big snip> >So, having said all that, there is at least one compelling reason for my >use of a multi-piece rim: its potential acoustic superiority. I can better >shape the treble soundboard and I can more easily float the bass end of the > soundboard. Greetings, Perhaps I am reading it wrong, but these two statements seem to be taking different paths. Does "its potential acoustic superiority" refer to the geometry it makes possible? I don't think we can discount the acoustical importance of the rims, since they are not only massive, but are entrained via their connections in the string-bridge-soundboard-case-plate-string -etc circle. Wouldn't the "impedance" of the rim have a measurable effect? I know we can use uprights with their jointed constructions as a case in point, do they have the same output as a continuous wrapped grand? Would it be fair to draw comparisons with the Lucite cased grand that has been on display( or did it have a wooden inner rim?) Regards, Ed Foote (I have never installed a soundboard, or untwisted a case, but I have sure sat in front of'em for a long long time)
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