QRS Music Technologies PMII Installation Manual - Installa On Procedure
Installa on Procedure
8
July 2013
Upright Piano Installa on ‐ Recommenda ons...
This sec on outlines the differences between the installa on of the QRS PNOma on II retrofit kit in a grand piano ver‐
sus an upright or ver cal piano. The differences are rela vely small, and an installer familiar with the procedure for
installa on in a grand piano should have no difficulty comple ng this type of installa on.
The differences are as follows:
1. In a ver cal piano, the en re mechanism is hidden from view within the cabinetry of the piano itself, and conse‐
quently the installer can place the components anywhere it makes sense to do so.
2. Since the mechanism is hidden from view, no solenoid rail cover is required.
3. The trapwork is very different from that of a grand piano, and requires the installer to use a special pedal solenoid
bracket made specifically for the upright.
This is a special order item!
4. In a ver cal piano, the en re kit is installed below the keybed. In most cases, the back rail and back rail cloth
should be relocated toward the back edge of the piano keys. IMPORTANT******** care must be taken to first measure
the key dip at the back end of the keys before any work begins. Secondly, a er the back rail has been relocated, you
must ensure that the key dip is exactly the same as it was before star ng. If it is not, you must either trim the back rail
or shim it up to its original measurement.
5. Special upright driver board moun ng brackets are required for moun ng the driver boards to the solenoid rail.
These brackets are 3” long and will allow the driver board and chassis to hang below the solenoid rail when completed.
6. SPECIAL NOTE**** If the driver boards are mounted upside down, you can reverse the playing order of the notes by
selec ng “Invert Keybed” in the “Playback Parameters” sec on of PMII.
7. The power supply and the processor board are mounted inside the cabinet of the piano in any place convenient to
the installer. Make sure the electrical cables do not interfere with any of the mechanical levers within the piano.
8. It is necessary to cut a 1” hole directly through the soundboard of the piano towards the bo om of the piano at the
end where the power supply is mounted. This will allow the main power plug to easily be plugged into a wall outlet.
This hole will not affect the sound of the piano in any way.
9. Alignment of the solenoid rail is made by laying a wooden s ck at the top back edge of the keys and carefully trans‐
ferring the centerline of each key onto the wooden s ck. This s ck will become your alignment s ck, and these marks
will be used to locate the proper posi on for you solenoids. Remember that a standard installa on is 80 notes and the
pianos 88 notes. Start with note #5 and end with note #84 and slide each pair of solenoids in direct alignment with
your marks on the alignment s ck and ghten the 11/32” nuts.
10. Smaller speakers are supplied with the upright kit.
General Recommenda ons