I am in the process of electrifying and MIDIfying a 6 rank roll playing
reed organ (The reservoir and foot pump were removed years ago by
someone else so I am not destroying an antique).

Can anyone in MMD suggest where I can find a turbine vacuum source for
such an organ?    It would need to deliver a vacuum of about
3 to 4 inches of water.

Lee Organ Mfg. in Oregon used to manufacture such a unit but I do not
think they are in business any more.

Regards to all,
Phil Dayson