To overcome the problems that can occur
with traditional slider barsoundboards subjected to the extremes
in temperature and humidity, many organ builders resorted to
the use of some type of sliderless bar type soundboard. Whilst
these sliderless soundboards have proved more resilient, nothing
lasts forever and many organ builders are responsible for repairing
such failing actions.
A convenient solution is to replace
the pneumatic valve under each pipe with a direct electric pallet.
For soundboards with more than five
straight ranks, more than one board can be connected together.