Audyssey doesn't set the speakers to small or large, that is the receicer mfg decision. Audyssey does look for the -3dB point for each speaker in your room and reports that back to the receiver during setup, which is why my m80's were reported as large, but I still change them to small and use 60hz if I recall.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85