i came up with “minimum driver” terminology just now to describe a system i recently designed and will soon document on this site
the system uses curved array elements mixed in with true point sources but is overall designed to emulate point source behavior because that ultimately allows a MINIMUM NUMBER OF DRIVERS to achieve a given SPL target
this is as opposed to a LINE ARRAY which use MORE drivers that are necessary to achieve the SPL target and instead the drivers are just padding out the length of the array to make sure there are no gaps which would result in audible anomalies
see related discussion here: Matching horns with arrays