[sdiy] Top octave practices in old organs

[John Speth]

Hi-

I just wrapped up the cleaning and restoration of a 1973 Wurlitzer
Funmaker Organ.  In trying to determine if it's all working properly, I
have some doubt about the upper keyboard top octave.

There are three pipe settings: 4', 8', and 16'.  I found that the 4' and
8' pipes are missing from top C.  In the complete C-B flat octave below
top C, the 4' pipe is missing.  It's almost as if the it was designed that
way but I don't know that for sure.  Is that a common design practice from
the era to deal with the lack of very high pipe frequencies?  Or does my
organ have a subtle problem that I need to fix?

JJS