The small/large nomenclature isn't the best. It simply means use/not use bass management but wants you to feel comfortable about your "size"
Audyssey never themselves agreed with the use of a sub to use the "large" setting for example (but the avr manufacturers tweaked the setup/Audyssey setup to accommodate the avr manufacturer suggestions rather than the avr manufacturer). Usually an f3 of 40hz on a given speaker channel will trigger the use of the "large" setting....who wants to tell you your package is "small" after all?
