Disklavier

I have an MX100 II Disklavier and am becoming quite familiar with this instrument from the technical point of view.  This instrument has built in calibration tests that determine the minimum velocity required to strike each note based on the condition of the mechanical piano action.  Each notes action is independent from all the others and in an ideal world, the effort required of the drivers in the Disklavier to play softly would be equal for all notes.  However, this is not the case as the piano ages for a number of reasons.  Remarkably, Yamaha thought of this and the processor can actually test and tailor each note of the keyboard for good velocity within certain wear limits and resistance of the action.  In fact, if you think you can do better than the automatic keyboard calibration, it will let you try by adjusting the velocity played for each note with a given velocity in.  However, this is very difficult to do , at least for me and the auto procedure seems to do a better job. 
 
I do not know if the MKIII has this feature.  You could check with your local Yamaha service person or perhaps someone from the Piano Tuners Guild.  It may be that you just need a recalibration.
 
Regards,
 
Mike
 
 
-----Original Message-----
From: Bob Gonzalez <bgonzalez@...>
To: disklavier@...
Sent: Tue, 30 Aug 2005 14:20:39 -0700
Subject: [disklavier] Minimum Velocities


I am working with a MarkIIIXG upright.  We downloaded some Ampico expression rolls.  Even with the volume control at max, some notes will not strike on play back.  I looked at the file with Cakewalk and noticed that the missing notes had velocities around 30.  I assume that when the XG volume is on maximum, the piano will try to play the velocities in the file with no lowering.
 
My question is: What is the lowest velocity number this piano must have to reliably play such fast moving music?  Spencer Chase's editor will let you raise velocities in certain ranges without bothering other velocities.  The piano has just run the self test and calibration program and passed.  I just want to know how much to raise those soft notes.
 
Many thanks for all comments.
 
Bob Gonzalez
bgonzalez@...


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