> Try taking the worst of the unisons and use the CA on the bridge pins. If > that takes care of the problem on that unison, I think you'll have a little > more concrete evidence that it really is loose bridge pins, (probably is, > but another little test or two can't hurt,) and it would probably give you > a more solid leg to stand on when the 'factory rep' (or whoever) is on the > other end of the phone saying, "Are you SURE it's loose bridge pins???". I see your point Brian, but I wouldn't want to attempt ANY repair (especially one that could be identified) prior to contacting the dealer/manufacturer regarding the problem. I don't think there is anything goofy going on regarding pressure on the board either, the false beats stop with just light pressure on the pin. Terry Farrell Piano Tuning & Service Tampa, Florida mfarrel2@tampabay.rr.com ----- Original Message ----- From: "Brian Trout" <btrout@desupernet.net> To: <pianotech@ptg.org> Sent: Sunday, January 14, 2001 9:43 PM Subject: Re: Piano Warrenty/False Beats > Hi Terry, > > I did have one more thought when I read your reply and Don's post. > > Something you could try... > > Try taking the worst of the unisons and use the CA on the bridge pins. If > that takes care of the problem on that unison, I think you'll have a little > more concrete evidence that it really is loose bridge pins, (probably is, > but another little test or two can't hurt,) and it would probably give you > a more solid leg to stand on when the 'factory rep' (or whoever) is on the > other end of the phone saying, "Are you SURE it's loose bridge pins???". > > The only other thing that comes to mind that could cause those false beats > to disappear would be your further loading the soundboard by the downward > pressure on the bridge pin (changing the soundboard impedance)... but that's > a pretty big can of worms for a guy such as me. It did come to mind though. > In such a case, something like mass loading in the bridge might make a > difference, but I'm not sure I want to go any farther with that one just > now. I would also suspect that this type of problem would be a little more > universal to certain sections as opposed to the odd string here and there. > > Just more ramblings from the peanut gallery! :-) > > Take care, > > Brian Trout > Quarryville, PA > btrout@desupernet.net > >
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