Spreckels Organ Society
2024 Insiders Brunch and Tour

September 14, 2024

By placing his foot on a wind inlet valve, Dale explains how the air pressure is maintained.
An organ pipe speaks well only when it receives a constant pressure of air.
As the organist plays varying combination of keys and stops, it's up to
the air pressure regulator to ensure that wind pressure remains constant.

Photo by Dwight Gordon