Hi Ron, What do you consider "long" duplexes? Jeannie Grassi, RPT Bainbridge Island, WA -----Original Message----- From: Ron Nossaman [mailto:rnossaman at cox.net] Sent: Tuesday, June 01, 2010 8:41 PM To: pianotech at ptg.org Subject: Re: [pianotech] Hammers or duplex? Joe Wiencek wrote: > This subject was heatedly debated recently, With one individual providing all the heat, yes. >that is, which is the source > of extraneous noise, poorly mated hammers, or issues relating to duplex > length? The long front duplex lengths are the problem. Poorly mated hammers/strings will most certainly produce phasing noises elsewhere, but the short duplexes won't make noise however badly mated the hammers/strings. Nor will the long front duplex lengths necessarily become quiet however perfectly the hammer/string mating is accomplished. >I just want to throw out another question, because I'm not a > scientist. What about upright pianos? Even with poorly shaped hammers, > I don't encounter too much noise in uprights? Any one with more > empiricism care to comment? Uprights don't have long front duplex segments. That's it. Ron N -- I am using the free version of SPAMfighter. We are a community of 7 million users fighting spam. SPAMfighter has removed 505 of my spam emails to date. Get the free SPAMfighter here: http://www.spamfighter.com/len The Professional version does not have this message
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