I'm having trouble understanding what register should be used when nr 6 is asked for in the bass.
Karg-Elert uses this register at some times.
I always thought it refers to the 6 contrebasse (=2 bourdon, but lowest octave only) which is found on some instruments.
This week however I have found 2 cases which suggest something different.
(last system) What does he mean with 16'p? the lowest octave is not used at all in this passage, except for some few notes...
page 90 of the pdf: Méta 6 is called for in the bass...the lowest octave isn't used at all.
Maybe Titz included a second 16' in the bass.
UPDATE! Christoph came up with the answer, many thanks for your help!!
K-E made a few "Flüchtigkeitsfehler" (small mistakes) in the registrations
However, the 6 in the bass is for K-E a rank that is the continuation of the musette on the right side of the instrument. You can find this information in "Die Kunst des Registrierens" (Druckluftsystem) on page 253.