PAULREVENKOJONES at aol.com wrote: > A question from a colleague which I can't answer; anyone? > > / I am tuning an Ibach grand with a movable action. It has 99 possible > notes only 85 keys. It moves to the left if you want to play really low > bass notes, or it moves right it you want to play higher than usual > treble notes. It moves a 5th in either direction. Cool! >Where is A440? At A-4, naturally. <G> Ok, ok, Find the unison with the speaking length around 415mm. That ought to be it. I'd guess the transposer would be centered, but what I think is reasonable...isn't necessarily the way it is. Ron N
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