<!doctype html public "-//w3c//dtd html 4.0 transitional//en"> <html> <body text="#000000" bgcolor="#FFFFFF" link="#0000EE" vlink="#551A8B" alink="#FF0000">   Mark Bolsius wrote: <blockquote TYPE=CITE>G'day Richard, Sounds like a typical example of duplex segments that are too long. If that's the case, the pitch produced by these can be within an easily audible range... the effect is to double the number of strings vibrating in sympathy in the top end of the piano. Trouble is that many of the duplex (particularly front duplex) are untuned and produce lots of odd harmonics, hence the cymbalish nature of what you are hearing.</blockquote> I can measure them all off if you like.. But I would imagine its the front duplex that is the problem. Actually there is kinda like 3 different front (between the capo bar and tuning pins) speaking lengths and pluking any segment gives a very noticeable tone. <blockquote TYPE=CITE>You can check this by plucking the front duplex...what you should hear here is the same note as the speaking length on the other side of the capo bar...this is good, it's doing it's job. But if you can hear another strong note that's not related to the speaking length pitch, it's the note being produced by the duplex in it's own right.</blockquote> Interesting. Any thoughts on how loud the speaking length should respond to plucking the duplex vs how loud the duplex will sound when muting the speaking length and plucking the duplex ? Is it the duplexs primary job to strengthen the fundemental or augment the harmonics of that fundemental then ? Or does this sort of depend on what you are trying to accomplish ?   Skål Richard Brekne I.C.P.T.G.  N.P.T.F. Bergen, Norway   <blockquote TYPE=CITE>Cheers Mark Bolsius Bolsius Piano Services Canberra Australia  </blockquote> </body> </html>