False Beats in high treble after stringing

Keith McGavern kam544@gbronline.com
Tue, 10 Jun 2003 08:06:30 -0500


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At 9:09 PM -0400 6/9/03, Dave Smith wrote:
>... Can anyone offer me advice on what to do next to reduce the 
>false beats, short of unstringing and recapping bridge, etc?  I 
>would appreciate your help!

Dave,

I am no expert in this area, but will offer some thoughts has to how 
I would attempt to troubleshoot this matter in my mind.

To hopefully discover the cause:
1) pick the worst offender
2) mute the non-speaking sections of that offender, listen.
3) if false beat still there, determine that there is side and down bearing
4) if there is, determine that the string equally leaves the both the 
bridge pin and the bridge
5) if it does, determine that there is absolutely no movement in the bridge pin
6) if all these prove to be okay and the false beat has not 
dissipated, the way the string contacts the pressure bar is certainly 
a possibility for inducing a false beat.
7) And if after verifying all these conditions are as they should be, 
replacing the string is another option.

You might not be able to eliminate all of the false beats, but it is 
very possible they can be blended so that no one false beat stands 
out above the others. When tuning pianos in the field, blending is 
utilized by me quite often to mask inherent discrepancies that will 
never be properly addressed.

These are my thoughts on the matter, Dave, on chasing down the worst 
offending false beat situation.

Rest easy in this matter. Frustration in not the master, you are.

Keith McGavern
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