Mostly likely these are scaling problems. I have wondered about the tuning of certain older Yamahas like the P1 and the P2-B and a couple of grands I have seen over the years. I never took the time to take a measurement or three but if you send me the speaking length, core and wrap diameter of one or two notes we can to the calculations and know for sure. Bridge, board and rib design do effect tone but I doubt as much as these basses. A redesigned set of bass strings could do wonders for these pianos. Send me the numbers and we can have more real data to talk with. Newton
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