<html> <body> <pre>>> This should be fairly easy with an ETD. Tune all >> middle strings at pitch. Then set the ETD to +6 Hz >> and tune all right strings, set to -6 Hz and tune all >> left strings, or vise versa. Or so it seems to me. >No, it's not as straight forward as that. You must remember that you have to >keep the frame (plate) stable. Where you have an increase in tension you >must have a corresponding decrease to compensate. Raising all the right >strings at once will throw out the temperament and then you will really get >your knickers in a twist. You have to tune and complete each note ("unison") >as you go along. Might be easier to use 3 seperate ETD's or you >will be forever twiddling knobs, causing great confusion until you're >eventually knackered. Good point. An ETD such as the VT 100 would make it easy then by simply tuning the unison: -6, 0, +6, right off the display. </pre><x-sigsep></x-sigsep> Regards, Jon Page, piano technician Harwich Port, Cape Cod, Mass.<a href="mailto:jonpage@comcast.net" eudora="autourl">mailto:jonpage@comcast.net </a>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</body> </html>