Hi Roger, Here's the difference: Voicing the front side of the hammer dampens only the reflected wave going from the hammer back to the capo during the time of hammer contact. Once the hammer is off the string, the duplex operates freely. Presumably this gives better sustain than damping the duplex with glue or felt. You get the power and brightness from the hard back side of the hammer sending its wave toward the bridge, while damping some of the impact zing at the capo. At least that is the theory...;) It does make a difference somehow. It should also help with agraffe noise, though I haven't tried that yet. I got this from the Renner voicing instructuions, and also from Bill Clayton who learned it from Fred Drasche. My approach is pretty finicky: I draw a line across the hammers through the strike point, then start with shallow needling at the line, getting deeper toward the shoulder. 5 pokes with a 3 needle tool is enough to make a change. Ed S. ----- Original Message ----- From: "Roger Jolly" <roger.j@sasktel.net> To: "College and University Technicians" <caut@ptg.org> Sent: Monday, January 13, 2003 11:11 AM Subject: Re: after ring > At 05:30 PM 1/9/2003 -0500, you wrote: > >This is a good approach. > >Before reshaping the capo, try needling the front side of the hammers only. > >This will often reduce front duplex noise with very little loss of power. > >EdS > > Hi Ed, > A dab of white glue applied to the wire of the forward > terminating, will greatly reduce that noise by de tuning the duplex. > Just another emergency fix. > Regards Roger > > > _______________________________________________ > caut list info: https://www.moypiano.com/resources/#archives >
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