<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=iso-8859-1" http-equiv=Content-Type> <META name=GENERATOR content="MSHTML 8.00.6001.19019"> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><STRONG><FONT size=2 face=Arial>You guys are making all this sound so complicated to the point of confusion. </FONT></STRONG></DIV> <DIV><STRONG><FONT size=2 face=Arial></FONT></STRONG> </DIV> <DIV><STRONG><FONT size=2 face=Arial>I'm sure it is something very simple; like the sheer physical act of releasing the pressure of all that weight of the dampers against the strings and thus the soundboard and allowing the soundboard to do it's job properly. In all probability it only occurs on a piano with very little downbearing pressure to begin with.</FONT></STRONG></DIV> <DIV><STRONG><FONT size=2 face=Arial></FONT></STRONG> </DIV> <DIV><STRONG><FONT size=2 face=Arial>As for the swell effect itself, I have experienced it in a different context but can only describe it as what I would call a "secondary wave" if that makes sense to anybody.</FONT></STRONG></DIV> <DIV><STRONG><FONT size=2 face=Arial></FONT></STRONG> </DIV> <DIV><STRONG><FONT size=2 face=Arial>AF</FONT></STRONG></DIV> <DIV><STRONG><FONT size=2 face=Arial>(feeling blooming swell!)</FONT></STRONG></DIV> <BLOCKQUOTE style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B> <A title=davidlovepianos@comcast.net href="mailto:davidlovepianos@comcast.net">David Love</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, March 19, 2011 5:25 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [pianotech] What is bloom,</DIV>  It's quite possible that there is some<BR>threshold that needs to be crossed in order for that relatively small input<BR>of energy in the JD effect to become noticeable.  <BR><BR>I still lean toward the idea of the amount potential energy in the<BR>soundboard system created by spring compression and some finely tuned (so to<BR>speak) balance between that and the freedom with which the system can be set<BR>in motion.  When those two are optimized you get the most bang for your<BR>buck. <BR><BR>Hopefully someone can give me a more accurate physical description of what<BR>it is I'm trying to describe.  <BR><BR><BR>David Love<BR><BR><BR><BR>As I said earlier, I wonder how many of the people on list have ever <BR>heard the swell effect at all. It's quite different from everything <BR>we're used to.<BR><BR>Ron N<BR><BR><BR></BLOCKQUOTE></BODY></HTML>