I have a client with a Hoffman 190 manufactured in 2002, sold new in 2003 with tuning instability problems. The piano has not stayed in tune since the start. It has Dampp-chasers complete six part system. Multiple experienced RPT's have tuned this piano since new. The piano goes out of tune in sections as would be expected with a gap between the pinblock and the plate flange. The gap is about .003 - .020 inch gap which is present from note F1 - F2, from note E3 - C5 and from B5 - F8. It is difficult to tune also. The strings don't seem to render well especially at the capo bar. Another RPT technician claims that it could be the Roslau wire also. Any comments would be appreciated. Regards, David H. Abdalian, RPT -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20090827/dc0f4c13/attachment.htm>
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