----- Original Message ----- From: "David Love" <davidlovepianos@earthlink.net> To: "Pianotech" <pianotech@ptg.org> Sent: May 06, 2003 9:12 PM Subject: Rear Duplex Bars on Steinways: was Baldwin Accujust... > This discussion reminds me of something that I have wondered about with > reference to rear tuned duplexes and the effect on backscale length. When > replacing a soundboard on a piano with aliquots, such as a Steinway, one > could, conceivably, reset the plate such that the rear aliquots could be > removed adding some backscale length to the treble and mid tenor. Would > that added backscale length contribute anything to improving the tone, > i.e., is the backscale length on Steinways theoretically shorter than one > would design it under ideal circumstances. > In some versions it is very short indeed. Our usual approach is to simply remove the back so-called 'aliquot bar' and use vertical hitches. If there is a desire to retain the aliquot bar for aesthetic reasons it is also possible to relocate it some further back. With a bit of grinding it can usually be placed far enough back to bring the backscale up to an almost reasonable length. Relocating the plate is not a easy as it looks. It requires plugging and drilling to relocate the nosebolts, grinding the bass end of the plate flange for clearance, relocating the action for strikeline, etc. Del
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