Fw: M&H BB harmonic

[Joe & Penny Goss]

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> From: Joe & Penny Goss <imatunr@primenet.com>
> To: pianotech@ptg.org
> Subject: Re: M&H BB harmonic
> Date: Saturday, August 22, 1998 9:11 AM
> 
> Dan, 
> Try putting felt on a stick to block an octave or two at one time. This
will show if the cause is >related to the dampers or if it is another
source. 


> The resonance may be harmonics of other partials than the octave and
fifth. And
> could be related to unlevel strings with dampers not seating on the full
> surface of the string drawing off the harmony node but damping the string
> when played alone. This allows the other strings to cause sympathetic
> vibration at that frequency.
> Joe
> 
> ----------
> > From: Dan Rue <rue@ncia.com>
> > To: pianotech@ptg.org
> > Subject: M&H BB harmonic
> > Date: Saturday, August 22, 1998 8:30 AM
> > 
> > Dear List,  I have a client with a problem Mason & Hamlin BB. The piano

> > has a very strong harmonic produced by G#5. The sound continues after
the
> 
> > key is released and cannot be stopped by blocking the string or any 
> > related strings. The sound is also produced, but to a lesser degree, by

> > G#2,3, &4 and by C#3 & 4. I have tried blocking all G# & C# strings in 
> > the piano as well as muting the strings behind the bridges to no avail.

> > Any advice would be greatly appreciated.  Thanks, Dan Rue, RPT