they are the same manufacturers at least, i have no idea if they are the same model woofs/tweets though (close enough for me). a few reasons. cheaper, for one (and admittedly i found one used on agon, but was gonna get one new). smaller than the salk. and admittedly, i was just curious to hear the selah's. i find them and salk to be of a similar philosophy and build (which is i hope taken as a compliment to both parties).