<html xmlns:m="http://schemas.microsoft.com/office/2004/12/omml"> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 10 (filtered)"> <style>  </style> </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> No, or not necessarily.  The change in pitch will have less to do with soundboard area than it will with the scaling, specifically the break point percentages.  The piano strung with the lowest break point percentage will likely change the most.  That being said, there are differences in the rim composition that seem to have some influence in terms of the amount of change in the overall structure.  It seems that pianos with harder wood construction change (expand and contract) less than softer woods.  Those who know more about wood technology than I do might be able to expand on that subject.   <div> David Love davidlovepianos@comcast.net www.davidlovepianos.com </div> -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of Brian Doepke Sent: Monday, July 21, 2008 6:13 PM To: pianotech@ptg.org Subject: percentage %   I am not sure how to ask this question logically……If a spinet and a 7’4” grand are in the same room and go through changes because of humidity fluctuations….will there be a larger percentage of pitch change in the grand because there is more soundboard to affect than in the spinet?   Brian P. Doepke, RPT A.A.A. Piano Works, LLC Piano Tuning + Service   </div> </body> </html>