<font color='navy' size='2' face='Comic Sans MS, sans-serif'><font color="#000080" face="Comic Sans MS, sans-serif" size="2">Larry</font> <div><font color="#000080" face="Comic Sans MS, sans-serif" size="2">  You bet</font></div> <div><font color="#000080" face="Comic Sans MS, sans-serif" size="2"> We all like the sound of this piano top to bottom. Nice clear treble. lots -o- sustain. Nice bass despite the really short backscale lengths on the monochords. We Jolly looped those.</font></div> <div><font color="#000080" face="Comic Sans MS, sans-serif" size="2">   Some things work when in our </font><font color="#000080" face="Comic Sans MS, sans-serif">engineering</font><font color="#000080" face="Comic Sans MS, sans-serif" size="2"> minds we can't figure out how. One thing has stuck in my head that Del has said many times about what makes a soundboard work,.....it is mass and stiffness. </font> <div><font color="#000080" face="Comic Sans MS, sans-serif" size="2"> Another example is a Mason & Hamlin AA from  1951. I rebuilt 2 of these. Twins off the assembly line. Came from a school in Ark. This was built for my sister 11 years ago and I saw it last week. It new bridge caps, modest bearing on an original board. Board is basically flat as the central Calif  valley and yet it has the most glorious dumbfounding sound ever. Stuff works. <br> </font><br> <div style="color: navy; font-family: 'Comic Sans MS', sans-serif; font-size: 10pt; clear: both;"><font size="1" color="royalblue"><b><font face="Georgia, Times New Roman, Times, Serif"><font color="black"><font color="mediumblue" face="Comic Sans MS, sans-serif">Dale Erwin R.P.T.<br> <font color="green">Erwin's Piano Restoration Inc.</font><br> </font></font></font></b></font><font color="darkgreen"><span style="font-style: italic;"><b><font size="1"><font size="1" color="black"><font color="blueviolet"><font color="black"> <font color="black" face="Comic Sans MS, sans-serif">Mason & Hamlin</font><font face="Comic Sans MS, sans-serif">/Steinway/</font><font color="black" face="Comic Sans MS, sans-serif">U.S. pianos</font><font face="Comic Sans MS, sans-serif"><br> </font></font></font></font><br> <font color="darkgreen"></font></font></b></span></font><tt><tt><font color="darkgreen"><br>  </font><br>   </tt></tt></div> <div style="color: black; font-family: arial, helvetica; font-size: 10pt;"><br> <div id="AOLMsgPart_1_bedcb202-8be6-4590-a3fe-1646d184004d"> <div dir="ltr"> <div style="FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: 12pt">thanks for the images Dale.  Looking at the top two octaves of the piano it sure looks like an awful lot of bridge for so little amplitude in that area.  It looks like the bridge is even taller in the top section.  I would think this would absorb a lot of energy making for a weak sound up there.  So my question is this.  You say the piano had a good tone considering it’s size.  How’s the upper end on this one?  Is there a lot of hammer knock??  Just curious more than anything.</div> </div> </div>  </div> </div> </div> </font>