I've yet to find anything close to a quantifiable difference in uprights between those with aggraffes, and those with pressure bars with regard to falsebeats myself. I dont see how the tone would be affected either way... at least with regard to clarity. The mass issue brought up by one of the respondents might be an issue here... tho perhaps its less a concern in an upright. Petrofs are a great example of an upright with good tone that uses agraffes all the way up. False beating on these pianos is sometimes just plain horrible... but nearly completely related to bridge issues IME. I'd like to hear more of Franks reasoning for not liking them in uprights. Cheers RicB > I've always felt that verticals with agraffes have a clearer tone with > less false beating. The strings render well, too, making it easier to > tune well. JMHO I've *never* found false beating to be the fault of the V mound and pressure bar. JMHO2
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