Notes: The rank to audio group allocations (2 audio channels per group) in the graphic below have been created using a number of factors:

a. Minimising the number of often simultaneously used ranks in the same group.

b. Minimising the deployment of similar ranks (eg Tibias and other sinusoidal ranks) in the same group which are likely to be used simultaneously.

c. Ensuring that unison and celeste ranks are always separate from each other.

d. Attempting to have 'best fit' outcomes for rank, effect, and speaker and dynamic amplifier overhead (eg cymbals require lots of high frequency power delivery [current and watts] which tracks without error throughout the frequency range). Three way speakers deliver superior powerful reed outcomes relative to any two way due to their better mid range energy and mid range headroom.

Consequently, if you consider the 1st group below ("KRK") then it is unlikely that all of these ranks, tuned percussions and effects will be playing simultaneously. However, there are too many risks of concurrent use remaining in this group for two critical ranks (the Brass Trumpet and Tuba Mirabilis) when the fullest ensemble is required, and now that I have 36 channels of audio channel possibilities via three Echo Audiofire 12 sound cards, then just as soon as I can acquire an equivalent audio chain (Crown XLS 602 amplifier and KRK 13000B loudspeakers), then the Brass Trumpet and Tuba Mirabilis will be separated from each other.