Tuned a Schiedmeier piano today (7'grand) and decided, as is my tendency, to crawl under and examine the belly. There was a duplicate bridge structure, about the same height, that ran the entire length of the long bridge (sorry no picture), attached to the soundboard directly underneath the topside bridge. There were cutouts along the length to allow the ribs to pass through untouched. It is obviously, for mass loading, at least. The piano has fabulous sustain and clarity and I'd be curious to know if any other pianos or piano designers employ such a structure or see the benefit of doing so. The structure, btw, did not exist underneath the bass bridge. David Love davidlovepianos at comcast.net www.davidlovepianos.com
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