Richard writes: >Still no one has addressed the consequences of Bob Hohfs disertation on >action >heights in this context. His observations about the distance between string >and >keybed determining each individual actions optimal distance geometries >seem hard to >ignore, and would definantly, if adhered to, require a willingness to relax >the 10 >mm thing.... at least to some small degree me thinks. Greetings, Agreed. If there is to be only one keydip, then there is going to be either a variety of aftertouch or an even wider range of blow distances to entertain. All three of these work together,(I'm leaving let-off out of this comparison), and if you lock one down, the other two are going to vary in all but the perfect action. I noticed a change in perception when I switched from "carved-in-stone keydip measurement" (which left a variety of aftertouch), to an aftertouch-priority method that allows the keydip to vary but keeps the aftertouch consistant. The pianists felt like the keyboard was more even. This appears to be because it is far more difficult to sense a .005" difference between two keys movement of .380" than it is to determine that same .005" difference in two aftertouch measurements of .030". The discrepancy is a far greater percentage of the smaller figure. The ultimate regulation I have found is to split the differences between keydip and hammerblow,while keeping the aftertouch exactly the same throughout. This does create a slightly erratic hammerline appearance,which is why the factories will never adopt it, but the feel is hard to beat. Regards, Ed Foote RPT
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