Disklavier

We went with the installation of the QuietTime Grand Mute Rail Assy.
The installation was done in our home on our Upgraded Mark IIXG A1 Grand
Piano.  It took the tech about 10 hours to install it.  After the basic
installation the Tech had to return to adjust the low end to the Rail at the
Horn Break, took another hour.  We then noticed a problem with volume at the
high end, last octave, and a few keys around the horn break.  The tech
returned to make a few minor adjustments, which turned out to be a more
involved adjustment exercise.  The hammer rail had to be adjusted in both
places and several of the keys had to be adjusted.  This took another three
hours.   During the whole process several calls were made to Mark Wisner,
who was, as always, very knowledgeable and very helpful.

The Rail is installed, works very well, and now my wife can play any voice
without the acoustic piano overpowering the voice, a voice only mode, like
the Mark III.

It appears to me, an observer, that the "Voice Only Mode" requires more
sensitive adjustment to the hammers and keys than the "Acoustic Piano plus
Voice Mode".  Installation of the Mute Rail requires a competent piano
technical who is very familiar with the Yamaha Piano and it's electronics
and software. Remember this guy is going to drill a hole through the horn of
the piano.