---------------------- multipart/mixed attachment -------------------------------1106502141 In a message dated 1/23/2005 2:22:45 A.M. Pacific Standard Time, sec@overspianos.com.au writes: Hi Ron Fine post. I too have given this thought over many years & so often it's the pianos with a massive overbuilt plate(rims) that speaks to me. "I believe" part of this has to do with the fact that a heavy dead plate is not likely to have any unwanted resonances or absorp acoustical energy . I've made a habit of tapping/thumping on plates, especially the struts. If they go thunk & the sound dies instantly, this is a good thing ,if they they resonate or worse,sing then they're vibrating at varying frequencies & sucking vibrational energy out of the sytem & detracting audibly from the music It doesn't take much common sense to figure this out. Use your knuckle & just tap all over the plate. It's educational I've heard some struts from vacuum processed plate that ring for 2 or more second & in sympathy with certain frequencies. Cheers Dale I didn't mean to offend you, and sorry if I have. But surely we have to be able to offer an opinion on the merits of various design factors based on experience. The two pianos, in my experience, which initially caused me to believe that plate weight was important, were the Baldwin SD-10 and the Welmar 6'0 grand. Both have quite massive plate thickness out behind the hitch plate (much thicker than the plate we use for our 225). The SD-10 from memory is well over 16 mm thick, and the Welmar is over 20 mm thick at the web between the treble and bass bridges. While the original workmanship of both pianos seemed to be somewhat wanting, both had outstanding sustain and the plates seemed to be the facilitating stand-out parameter. I thought my earlier post was quite innocuous. I didn't expect someone to jump up and down about it. Ah well, another day at the office. Ron O. -------------------------------1106502141 An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/94/ad/40/7a/attachment.htm -------------------------------1106502141-- ---------------------- multipart/mixed attachment An embedded message was scrubbed... From: Overs Pianos <sec@overspianos.com.au> Subject: re: Circle of Sound Date: Sun, 23 Jan 2005 21:22:17 +1100 Size: 6891 Url: https://www.moypiano.com/ptg/pianotech.php/attachments/d2/63/f5/2a/attachment.eml ---------------------- multipart/mixed attachment--
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