Thank you very much Del. On 23-Feb-2012 2:53 PM, "Delwin D Fandrich" <del at fandrichpiano.com> wrote: 1) Unless you know the design you have to measure. There is obviously no clear line here. Generally I consider a piano with scaling tensions below 160 lbf (72.5 kgf) through the tenor section to be low-tension scales. Those with scaling tensions above 180 lbf (81.5 kgf) are high-tension scales. Many existing piano scales are more-or-less in the middle and many are a mix of both.**** ** ** In addition to knowing if a given scale has high or low tensions, it is useful to know how a scale gets those tensions. That is, does it have long and thin strings or short and thick strings? Each will have a different tone characteristic.**** ** ** 2) In the best of all worlds each different scale type would be matched to a different soundboard and rib scale and the piano would use hammers selected to match the scaling and the soundboard design. To look at just the extremes, a piano with a long low-tension scale will work best with a light, relatively flexible soundboard and light, resilient hammers. A piano with a short high-tension scale will work best with a heavier, relatively stiffer soundboard assembly and denser, more massive hammers.**** ** ** ddf**** ** ** (Just a short plug for the upcoming PTG Convention—I’ll be presenting an all-day seminar on this topic including demonstrations of various scale types on my string test fixture. —ddf)**** ** ** ** ** Delwin D Fandrich**** Piano Design & Fabrication**** 6939 Foothill Court SW, Olympia, Washington 98512 USA**** Phone 360.515.0119 — Cell 360.388.6525**** del at fandrichpiano.com — ddfandrich at gmail.com**** ** ** *From:* pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] *On Behalf Of *lim hock seng *Sent:* Wednesday, February 22, 2012 8:34 PM *To:* pianotech at ptg.org *Subject:* [pianotech] High tension, low tension?**** Hi list, 1. How do we know whether a piano has high or low tension scaling? 2. Do we voiced dif... -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20120224/2c0ca233/attachment.htm>
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