On 10/9/2010 3:08 PM, Robert Callaghan wrote: > I'm looking at a grand piano where an upper bass string has a very > pronounced "zing" on a hard blow. It sounds just like when a damper wire > touches the string. But even with the damper removed I hear it. I > suspect it is the bass string touching the treble aliquot bar below it, > meaning perhaps the aliquot bar is in the wrong spot, too far up the > slope of the plate. Before I do anything like move the aliquot bar, I > want to run this by everyone. Do you agree this could be it? The bridge pins are considerably higher than the aliquot bars, so no, I doubt the aliquot bars are involved but I'd consider bridge pins in the tenor bridge underneath. Most likely is the adjacent damper wire that Kent mentioned. After that, the plate strut. Possibly side clearance on the bridge notch. Then a low downbearing, minimal stagger, minimal draft angle at one of the high bass bridge pins - termination. There are only a very few things that can cause this. We can all guess at random, or you can systematically eliminate possible causes by thinking and trying things until it shows itself. Ron N
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