This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment ----- Original Message -----=20 From: Crashvalve@aol.com=20 To: pianotech@ptg.org=20 Sent: October 12, 2003 8:48 PM Subject: Re: Restoring Crown Story & clark used to have those store demonstration 3-4 inch wide = strips of soundboard with a tuning fork screwed to the middle and a = tension rack below. The fork was struck and then the rack engaged to = produce varying amounts of crown in this little strip of board. Of = course the tuning fork tone increased dramatically when crowned. Problem = is, it's an awfully small footage of soundboard, is this really a = reliable proof of crown producing amplification (or at least good = transmission) ? Glenn C.=20 No, it is not. It's an indication of what happens when you tune the = resonant frequency of a bent piece of wood held under compression to the = specific frequency of a vibrating tuning fork mounted to its surface. It = had no bearing (if you'll pardon the expression) on the performance of = the soundboard and the folks at Story & Clark knew it.=20 Del ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/68/77/32/c6/attachment.htm ---------------------- multipart/alternative attachment--
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